js工具函数大全

校验是否包含中文字符(包括中文标点符号)

1 function haveCNChars(str){
2     return /[\u4e00-\u9fa5]/.test(str);
3 }

校验是否包含空格

1 function haveSpace(str) {
2     return /[ ]/.test(str);
3 }

除保留标点符号集以外，清除其他所有英文的标点符号(含空格)

全部英文标点符号为：~`!@#$%^&*()-_+=[]{};:"',<.>/?
参数excludePunctuation指需要保留的标点符号集，例如若传递的值为'_'，即表示清除_以外的其他所有英文标点符号。

1 function clearPunctuation(str,excludePunctuation=null){
2     let regexp = new RegExp(`[${getExcludePunctuation(excludePunctuation)}]`,'g');
3     return str.replace(regexp,'');
4 }

清除所有中文字符及空格

1 function clearCNCharsAndSpaces(str){
2     return str.replace(/[\u4e00-\u9fa5 ]/g,'');
3 }

清除所有中文字符(包括中文标点符号)

1 function clearCNChars(str){
2     return str.replace(/[\u4e00-\u9fa5]/g,'');
3 }

清除所有空格

1 function clearSpaces(str){
2     return str.replace(/[ ]/g,'');
3 }

校验字符串构成的种类数量是否大于或等于参数num的值。通常用来校验用户设置的密码复杂程度。

　　校验规则：

参数num为需要构成的种类(字母、数字、标点符号)，该值只能是1-3。
默认参数num的值为1，即表示：至少包含字母，数字，标点符号中的1种
若参数num的值为2，即表示：至少包含字母，数字，标点符号中的2种
若参数num的值为3，即表示：必须同时包含字母，数字，标点符号
参数punctuation指可接受的标点符号集，具体设定可参考getLIPTypes()方法中关于标点符号集的解释。

1 function pureLIP(str,num=1,punctuation=null){
2     let regexp = new RegExp(`[^A-z0-9|${getPunctuation(punctuation)}]`);
3     return Boolean(!regexp.test(str) && getLIPTypes(str,punctuation)>= num);
4 }

返回字符串构成种类(字母，数字，标点符号)的数量

　　LIP缩写的由来：L(letter 字母) + I(uint 数字) + P(punctuation 标点符号)

　　参数punctuation的说明：

punctuation指可接受的标点符号集
若需自定义符号集，例如“仅包含中划线和下划线”，将参数设置为"-_"即可
若不传值或默认为null，则内部默认标点符号集为除空格外的其他英文标点符号：~`!@#$%^&*()-_+=[]{};:"',<.>/?

1 function getLIPTypes(str,punctuation=null){
2     let p_regexp = new RegExp('['+getPunctuation(punctuation)+']');
3     return /[A-z]/.test(str) + /[0-9]/.test(str) + p_regexp.test(str);
4 }

校验字符是否为纯数字(整数)

　　校验规则：

字符全部为正整数(包含0)
可以以0开头

 1 function pureNum(str) {
 2     return /^[0-9]*$/.test(str);
 3 }
 4 function anysicPunctuation(str){
 5     if(!str) return null;
 6     let arr = str.split('').map(item => {
 7         return item = '\\' + item;
 8     });
 9     return arr.join('|');
10 }
11 function getPunctuation(str){
12     return anysicPunctuation(str) || '\\~|\\`|\\!|\\@|\\#|\\$|\\%|\\^|\\&|\\*|\\(|\\)|\\-|\\_|\\+|\\=|\\||\\\|\\[|\\]|\\{|\\}|\\;|\\:|\\"|\\\'|\\,|\\<|\\.|\\>|\\/|\\?';
13 }
14 function getExcludePunctuation(str){
15     let regexp = new RegExp(`[${anysicPunctuation(str)}]`,'g');
16     return getPunctuation(' ~`!@#$%^&*()-_+=\[]{};:"\',<.>/?'.replace(regexp,''));
17 }

校验字符是否以字母开头

　　校验规则：

必须以字母开头
开头的字母不区分大小写

1 function letterBegin(str){
2     return /^[A-z]/.test(str);
3 }

校验字符的长度是否在规定的范围内

　　校验规则：

minInt为在取值范围中最小的长度
maxInt为在取值范围中最大的长度

1 function lengthRange(str,minLength,maxLength=9007199254740991) {
2     return Boolean(str.length >= minLength && str.length <= maxLength);
3 }

校验两个参数是否完全相同，包括类型

　　校验规则：

值相同，数据类型也相同

1 function same(firstValue,secondValue){
2     return firstValue===secondValue;
3 }

校验是否为中国大陆邮政编码

　　参数value为数字或字符串，校验规则：

共6位，且不能以0开头

1 function isPostCode(value){
2     return /^[1-9][0-9]{5}$/.test(value.toString());
3 }

校验是否为中国大陆第二代居民身份证

　　校验规则：

共18位，最后一位可为X(大小写均可)
不能以0开头
出生年月日会进行校验：年份只能为18/19/2*开头，月份只能为01-12，日只能为01-31

1 function isIDCard(str){
2     return /^[1-9][0-9]{5}(18|19|(2[0-9]))[0-9]{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)[0-9]{3}[0-9Xx]$/.test(str);
3 }

校验是否为IPv6地址

　　校验规则：

支持IPv6正常格式
支持IPv6压缩格式

1 function isIPv6(str){
2     return Boolean(str.match(/:/g)?str.match(/:/g).length<=7:false && /::/.test(str)?/^([\da-f]{1,4}(:|::)){1,6}[\da-f]{1,4}$/i.test(str):/^([\da-f]{1,4}:){7}[\da-f]{1,4}$/i.test(str));
3 }

校验是否为不含端口号的IP地址

　　校验规则：

IP格式为xxx.xxx.xxx.xxx，每一项数字取值范围为0-255
除0以外其他数字不能以0开头，比如02

1 function isIP(str) {
2     return /^((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])\.){3}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])$/.test(str);
3 }

校验是否为网址

　　校验规则：

以https://、http://、ftp://、rtsp://、mms://开头、或者没有这些开头
可以没有www开头(或其他二级域名)，仅域名
网页地址中允许出现/%*?@&等其他允许的符号

1 function isURL(str) {
2     return /^(https:\/\/|http:\/\/|ftp:\/\/|rtsp:\/\/|mms:\/\/)?[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/.test(str);
3 }

校验是否为QQ号码

　　校验规则：

1 //非0开头的5位-13位整数
2 function isQQ(value) {
3     return /^[1-9][0-9]{4,12}$/.test(value.toString());
4 }

校验是否为邮箱地址

1 function isEmail(str) {
2     return /^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/.test(str);
3 }

校验是否为中国大陆传真或固定电话号码

1 function isFax(str) {
2     return /^([0-9]{3,4})?[0-9]{7,8}$|^([0-9]{3,4}-)?[0-9]{7,8}$/.test(str);
3 }

校验是否为中国大陆手机号

1 function isTel(value) {
2     return /^1[3,4,5,6,7,8,9][0-9]{9}$/.test(value.toString());
3 }

校验整数是否在取值范围内

　　校验规则：

minInt为在取值范围中最小的整数
maxInt为在取值范围中最大的整数

1 function checkIntRange(value,minInt,maxInt=9007199254740991){
2     return Boolean(isInt(value) && (Boolean(minInt!=undefined && minInt!=null)?value>=minInt:true) && (value<=maxInt));
3 }

校验是否为非零的负整数

1 function isNInt(value,minLength=null,maxLength=undefined){
2     if(!isNum(value)) return false;
3     let regexp = new RegExp(`^-[1-9][0-9]${anysicIntLength(minLength,maxLength)}$`);
4     return regexp.test(value.toString());
5 }

校验是否为非零的正整数

1 function isPInt(value,minLength=null,maxLength=undefined) {
2     if(!isNum(value)) return false;
3 
4     let regexp = new RegExp(`^[1-9][0-9]${anysicIntLength(minLength,maxLength)}$`);
5     return regexp.test(value.toString());
6 }

校验是否为非零的正整数

1 function isInt(value,minLength=null,maxLength=undefined){
2     if(!isNum(value)) return false;
3 
4     let regexp = new RegExp(`^-?[1-9][0-9]${anysicIntLength(minLength,maxLength)}$`);
5     return regexp.test(value.toString());
6 }

常见的输入值校验和替换操作，主要针对中国大陆地区的校验规则：

　　校验是否为一个数字，以及该数字小数点位数是否与参数floats一致校验规则：

若参数floats有值，则校验该数字小数点后的位数。
若参数floats没有值，则仅仅校验是否为数字。

 1 function isNum(value,floats=null){
 2     let regexp = new RegExp(`^[1-9][0-9]*.[0-9]{${floats}}$|^0.[0-9]{${floats}}$`);
 3     return typeof value === 'number' && floats?regexp.test(String(value)):true;
 4 }
 5 function anysicIntLength(minLength,maxLength){
 6     let result_str = '';
 7     if(minLength){
 8         switch(maxLength){
 9             case undefined:
10                 result_str = result_str.concat(`{${minLength-1}}`);
11                 break;
12             case null:
13                 result_str = result_str.concat(`{${minLength-1},}`);
14                 break;
15             default:
16                 result_str = result_str.concat(`{${minLength-1},${maxLength-1}}`);
17         }
18     }else{
19         result_str = result_str.concat('*');
20     }
21 
22     return result_str;
23 }

实现utf8解码

 1 function utf8_decode(str_data) {
 2   var tmp_arr = [],
 3     i = 0,
 4     ac = 0,
 5     c1 = 0,
 6     c2 = 0,
 7     c3 = 0;
 8   str_data += "";
 9   while (i < str_data.length) {
10     c1 = str_data.charCodeAt(i);
11     if (c1 < 128) {
12       tmp_arr[ac++] = String.fromCharCode(c1);
13       i++;
14     } else if (c1 > 191 && c1 < 224) {
15       c2 = str_data.charCodeAt(i + 1);
16       tmp_arr[ac++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));
17       i += 2;
18     } else {
19       c2 = str_data.charCodeAt(i + 1);
20       c3 = str_data.charCodeAt(i + 2);
21       tmp_arr[ac++] = String.fromCharCode(
22         ((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)
23       );
24       i += 3;
25     }
26   }
27   return tmp_arr.join("");
28 }

随机数时间戳

1 function uniqueId() {
2   var a = Math.random,
3     b = parseInt;
4   return (
5     Number(new Date()).toString() + b(10 * a()) + b(10 * a()) + b(10 * a())
6   );
7 }

清除空格

 1 String.prototype.trim = function() {
 2   var reExtraSpace = /^\s*(.*?)\s+$/;
 3   return this.replace(reExtraSpace, "$1");
 4 };
 5 
 6 // 清除左空格
 7 function ltrim(s) {
 8   return s.replace(/^(\s*|　*)/, "");
 9 }
10 
11 // 清除右空格
12 function rtrim(s) {
13   return s.replace(/(\s*|　*)$/, "");
14 }

金额大写转换函数

 1 function transform(tranvalue) {
 2   try {
 3     var i = 1;
 4     var dw2 = new Array("", "万", "亿"); //大单位
 5     var dw1 = new Array("拾", "佰", "仟"); //小单位
 6     var dw = new Array(
 7       "零",
 8       "壹",
 9       "贰",
10       "叁",
11       "肆",
12       "伍",
13       "陆",
14       "柒",
15       "捌",
16       "玖"
17     );
18     //整数部分用
19     //以下是小写转换成大写显示在合计大写的文本框中
20     //分离整数与小数
21     var source = splits(tranvalue);
22     var num = source[0];
23     var dig = source[1];
24     //转换整数部分
25     var k1 = 0; //计小单位
26     var k2 = 0; //计大单位
27     var sum = 0;
28     var str = "";
29     var len = source[0].length; //整数的长度
30     for (i = 1; i <= len; i++) {
31       var n = source[0].charAt(len - i); //取得某个位数上的数字
32       var bn = 0;
33       if (len - i - 1 >= 0) {
34         bn = source[0].charAt(len - i - 1); //取得某个位数前一位上的数字
35       }
36       sum = sum + Number(n);
37       if (sum != 0) {
38         str = dw[Number(n)].concat(str); //取得该数字对应的大写数字，并插入到str字符串的前面
39         if (n == "0") sum = 0;
40       }
41       if (len - i - 1 >= 0) {
42         //在数字范围内
43         if (k1 != 3) {
44           //加小单位
45           if (bn != 0) {
46             str = dw1[k1].concat(str);
47           }
48           k1++;
49         } else {
50           //不加小单位，加大单位
51           k1 = 0;
52           var temp = str.charAt(0);
53           if (temp == "万" || temp == "亿")
54             //若大单位前没有数字则舍去大单位
55             str = str.substr(1, str.length - 1);
56           str = dw2[k2].concat(str);
57           sum = 0;
58         }
59       }
60       if (k1 == 3) {
61         //小单位到千则大单位进一
62         k2++;
63       }
64     }
65     //转换小数部分
66     var strdig = "";
67     if (dig != "") {
68       var n = dig.charAt(0);
69       if (n != 0) {
70         strdig += dw[Number(n)] + "角"; //加数字
71       }
72       var n = dig.charAt(1);
73       if (n != 0) {
74         strdig += dw[Number(n)] + "分"; //加数字
75       }
76     }
77     str += "元" + strdig;
78   } catch (e) {
79     return "0元";
80   }
81   return str;
82 }
83 //拆分整数与小数
84 function splits(tranvalue) {
85   var value = new Array("", "");
86   temp = tranvalue.split(".");
87   for (var i = 0; i < temp.length; i++) {
88     value = temp;
89   }
90   return value;
91 }

半角转换为全角函数

 1 function toDBC(str) {
 2   var result = "";
 3   for (var i = 0; i < str.length; i++) {
 4     code = str.charCodeAt(i);
 5     if (code >= 33 && code <= 126) {
 6       result += String.fromCharCode(str.charCodeAt(i) + 65248);
 7     } else if (code == 32) {
 8       result += String.fromCharCode(str.charCodeAt(i) + 12288 - 32);
 9     } else {
10       result += str.charAt(i);
11     }
12   }
13   return result;
14 }

全角转换为半角函数

 1 function toCDB(str) {
 2   var result = "";
 3   for (var i = 0; i < str.length; i++) {
 4     code = str.charCodeAt(i);
 5     if (code >= 65281 && code <= 65374) {
 6       result += String.fromCharCode(str.charCodeAt(i) - 65248);
 7     } else if (code == 12288) {
 8       result += String.fromCharCode(str.charCodeAt(i) - 12288 + 32);
 9     } else {
10       result += str.charAt(i);
11     }
12   }
13   return result;
14 }

时间个性化输出功能

 1 /*
 2 1、< 60s, 显示为“刚刚”
 3 2、>= 1min && < 60 min, 显示与当前时间差“XX分钟前”
 4 3、>= 60min && < 1day, 显示与当前时间差“今天 XX:XX”
 5 4、>= 1day && < 1year, 显示日期“XX月XX日 XX:XX”
 6 5、>= 1year, 显示具体日期“XXXX年XX月XX日 XX:XX”
 7 */
 8 function timeFormat(time) {
 9   var date = new Date(time),
10     curDate = new Date(),
11     year = date.getFullYear(),
12     month = date.getMonth() + 10,
13     day = date.getDate(),
14     hour = date.getHours(),
15     minute = date.getMinutes(),
16     curYear = curDate.getFullYear(),
17     curHour = curDate.getHours(),
18     timeStr;
19 
20   if (year < curYear) {
21     timeStr = year + "年" + month + "月" + day + "日 " + hour + ":" + minute;
22   } else {
23     var pastTime = curDate - date,
24       pastH = pastTime / 3600000;
25 
26     if (pastH > curHour) {
27       timeStr = month + "月" + day + "日 " + hour + ":" + minute;
28     } else if (pastH >= 1) {
29       timeStr = "今天 " + hour + ":" + minute + "分";
30     } else {
31       var pastM = curDate.getMinutes() - minute;
32       if (pastM > 1) {
33         timeStr = pastM + "分钟前";
34       } else {
35         timeStr = "刚刚";
36       }
37     }
38   }
39   return timeStr;
40 }

清除脚本内容

1 function stripscript(s) {
2   return s.replace(/<script.*?>.*?<\/script>/gi, "");
3 }

判断是否以某个字符串开头

1 String.prototype.startWith = function(s) {
2   return this.indexOf(s) == 0;
3 };

延时执行

 1 // 比如 sleep(1000) 意味着等待1000毫秒，还可从 Promise、Generator、Async/Await 等角度实现。
 2 // Promise
 3 const sleep = time => {
 4   return new Promise(resolve => setTimeout(resolve, time));
 5 };
 6 
 7 sleep(1000).then(() => {
 8   console.log(1);
 9 });
10 
11 // Generator
12 function* sleepGenerator(time) {
13   yield new Promise(function(resolve, reject) {
14     setTimeout(resolve, time);
15   });
16 }
17 
18 sleepGenerator(1000)
19   .next()
20   .value.then(() => {
21     console.log(1);
22   });
23 
24 //async
25 function sleep(time) {
26   return new Promise(resolve => setTimeout(resolve, time));
27 }
28 
29 async function output() {
30   let out = await sleep(1000);
31   console.log(1);
32   return out;
33 }
34 
35 output();
36 
37 function sleep(callback, time) {
38   if (typeof callback === "function") {
39     setTimeout(callback, time);
40   }
41 }
42 
43 function output() {
44   console.log(1);
45 }
46 
47 sleep(output, 1000);

按字母排序，对每行进行数组排序

 1 function setSort() {
 2   var text = K1.value
 3     .split(/[\r\n]/)
 4     .sort()
 5     .join("\r\n"); //顺序
 6   var test = K1.value
 7     .split(/[\r\n]/)
 8     .sort()
 9     .reverse()
10     .join("\r\n"); //反序
11   K1.value = K1.value != text ? text : test;
12 }

设为首页

 1 function setHomepage() {
 2   if (document.all) {
 3     document.body.style.behavior = "url(#default#homepage)";
 4     document.body.setHomePage("http://w3cboy.com");
 5   } else if (window.sidebar) {
 6     if (window.netscape) {
 7       try {
 8         netscape.security.PrivilegeManager.enablePrivilege(
 9           "UniversalXPConnect"
10         );
11       } catch (e) {
12         alert(
13           "该操作被浏览器拒绝，如果想启用该功能，请在地址栏内输入 about:config,然后将项 signed.applets.codebase_principal_support 值该为true"
14         );
15       }
16     }
17     var prefs = Components.classes[
18       "@mozilla.org/preferences-service;1"
19     ].getService(Components.interfaces.nsIPrefBranch);
20     prefs.setCharPref("browser.startup.homepage", "http://w3cboy.com");
21   }
22 }

获取cookie值

1 function getCookie(name) {
2   var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));
3   if (arr != null) return unescape(arr[2]);
4   return null;
5 }

设置cookie值

 1 function setCookie(name, value, Hours) {
 2   var d = new Date();
 3   var offset = 8;
 4   var utc = d.getTime() + d.getTimezoneOffset() * 60000;
 5   var nd = utc + 3600000 * offset;
 6   var exp = new Date(nd);
 7   exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000);
 8   document.cookie =
 9     name +
10     "=" +
11     escape(value) +
12     ";path=/;expires=" +
13     exp.toGMTString() +
14     ";domain=360doc.com;";
15 }

滚动到顶部

 1 // 使用document.documentElement.scrollTop 或 document.body.scrollTop 获取到顶部的距离，从顶部
 2 // 滚动一小部分距离。使用window.requestAnimationFrame()来滚动。
 3 // @example
 4 // scrollToTop();
 5 function scrollToTop() {
 6   var c = document.documentElement.scrollTop || document.body.scrollTop;
 7 
 8   if (c > 0) {
 9     window.requestAnimationFrame(scrollToTop);
10     window.scrollTo(0, c - c / 8);
11   }
12 }

替换全部

 1 String.prototype.replaceAll = function(s1, s2) {
 2   return this.replace(new RegExp(s1, "gm"), s2);
 3 };
 4 resize的操作
 5 (function() {
 6   var fn = function() {
 7     var w = document.documentElement
 8         ? document.documentElement.clientWidth
 9         : document.body.clientWidth,
10       r = 1255,
11       b = Element.extend(document.body),
12       classname = b.className;
13     if (w < r) {
14       //当窗体的宽度小于1255的时候执行相应的操作
15     } else {
16       //当窗体的宽度大于1255的时候执行相应的操作
17     }
18   };
19   if (window.addEventListener) {
20     window.addEventListener("resize", function() {
21       fn();
22     });
23   } else if (window.attachEvent) {
24     window.attachEvent("onresize", function() {
25       fn();
26     });
27   }
28   fn();
29 })();

替换地址栏

1 function locationReplace(url) {
2   if (history.replaceState) {
3     history.replaceState(null, document.title, url);
4     history.go(0);
5   } else {
6     location.replace(url);
7   }
8 }

去掉url前缀

 1 function removeUrlPrefix(a) {
 2   a = a
 3     .replace(/：/g, ":")
 4     .replace(/．/g, ".")
 5     .replace(/／/g, "/");
 6   while (
 7     trim(a)
 8       .toLowerCase()
 9       .indexOf("http://") == 0
10   ) {
11     a = trim(a.replace(/http:\/\//i, ""));
12   }
13   return a;
14 }

将键值对拼接成URL带参数

 1 export default const fnParams2Url = obj=> {
 2       let aUrl = []
 3       let fnAdd = function(key, value) {
 4         return key + '=' + value
 5       }
 6       for (var k in obj) {
 7         aUrl.push(fnAdd(k, obj[k]))
 8       }
 9       return encodeURIComponent(aUrl.join('&'))
10  }

打开一个窗体通用方法

 1 function openWindow(url, windowName, width, height) {
 2   var x = parseInt(screen.width / 2.0) - width / 2.0;
 3   var y = parseInt(screen.height / 2.0) - height / 2.0;
 4   var isMSIE = navigator.appName == "Microsoft Internet Explorer";
 5   if (isMSIE) {
 6     var p = "resizable=1,location=no,scrollbars=no,width=";
 7     p = p + width;
 8     p = p + ",height=";
 9     p = p + height;
10     p = p + ",left=";
11     p = p + x;
12     p = p + ",top=";
13     p = p + y;
14     retval = window.open(url, windowName, p);
15   } else {
16     var win = window.open(
17       url,
18       "ZyiisPopup",
19       "top=" +
20         y +
21         ",left=" +
22         x +
23         ",scrollbars=" +
24         scrollbars +
25         ",dialog=yes,modal=yes,width=" +
26         width +
27         ",height=" +
28         height +
29         ",resizable=no"
30     );
31     eval("try { win.resizeTo(width, height); } catch(e) { }");
32     win.focus();
33   }
34 }

解决offsetX兼容性问题

 1 // 针对火狐不支持offsetX/Y
 2 function getOffset(e) {
 3   var target = e.target, // 当前触发的目标对象
 4     eventCoord,
 5     pageCoord,
 6     offsetCoord;
 7 
 8   // 计算当前触发元素到文档的距离
 9   pageCoord = getPageCoord(target);
10 
11   // 计算光标到文档的距离
12   eventCoord = {
13     X: window.pageXOffset + e.clientX,
14     Y: window.pageYOffset + e.clientY
15   };
16 
17   // 相减获取光标到第一个定位的父元素的坐标
18   offsetCoord = {
19     X: eventCoord.X - pageCoord.X,
20     Y: eventCoord.Y - pageCoord.Y
21   };
22   return offsetCoord;
23 }
24 
25 function getPageCoord(element) {
26   var coord = { X: 0, Y: 0 };
27   // 计算从当前触发元素到根节点为止，
28   // 各级 offsetParent 元素的 offsetLeft 或 offsetTop 值之和
29   while (element) {
30     coord.X += element.offsetLeft;
31     coord.Y += element.offsetTop;
32     element = element.offsetParent;
33   }
34   return coord;
35 }

加载样式文件

 1 function loadStyle(url) {
 2   try {
 3     document.createStyleSheet(url);
 4   } catch (e) {
 5     var cssLink = document.createElement("link");
 6     cssLink.rel = "stylesheet";
 7     cssLink.type = "text/css";
 8     cssLink.href = url;
 9     var head = document.getElementsByTagName("head")[0];
10     head.appendChild(cssLink);
11   }
12 }

判断是否打开视窗

1 function isViewportOpen() {
2   return !!document.getElementById("wixMobileViewport");
3 }

判断是否为网址

1 function isURL(strUrl) {
2   var regular = /^\b(((https?|ftp):\/\/)?[-a-z0-9]+(\.[-a-z0-9]+)*\.(?:com|edu|gov|int|mil|net|org|biz|info|name|museum|asia|coop|aero|[a-z][a-z]|((25[0-5])|(2[0-4]\d)|(1\d\d)|([1-9]\d)|\d))\b(\/[-a-z0-9_:\@&?=+,.!\/~%\$]*)?)$/i;
3   if (regular.test(strUrl)) {
4     return true;
5   } else {
6     return false;
7   }
8 }

判断是否Touch屏幕

1 function isTouchScreen() {
2   return (
3     "ontouchstart" in window ||
4     (window.DocumentTouch && document instanceof DocumentTouch)
5   );
6 }

判断鼠标是否移出事件

 1 function isMouseOut(e, handler) {
 2   if (e.type !== "mouseout") {
 3     return false;
 4   }
 5   var reltg = e.relatedTarget
 6     ? e.relatedTarget
 7     : e.type === "mouseout"
 8     ? e.toElement
 9     : e.fromElement;
10   while (reltg && reltg !== handler) {
11     reltg = reltg.parentNode;
12   }
13   return reltg !== handler;
14 }

判断是否是移动设备访问

1 function isMobileUserAgent() {
2   return /iphone|ipod|android.*mobile|windows.*phone|blackberry.*mobile/i.test(
3     window.navigator.userAgent.toLowerCase()
4   );
5 }

判断吗是否手机号码

 1 function isMobileNumber(e) {
 2   var i =
 3       "134,135,136,137,138,139,150,151,152,157,158,159,187,188,147,182,183,184,178",
 4     n = "130,131,132,155,156,185,186,145,176",
 5     a = "133,153,180,181,189,177,173,170",
 6     o = e || "",
 7     r = o.substring(0, 3),
 8     d = o.substring(0, 4),
 9     s =
10       !!/^1\d{10}$/.test(o) &&
11       (n.indexOf(r) >= 0
12         ? "联通"
13         : a.indexOf(r) >= 0
14         ? "电信"
15         : "1349" == d
16         ? "电信"
17         : i.indexOf(r) >= 0
18         ? "移动"
19         : "未知");
20   return s;
21 }

判断是否移动设备

 1 function isMobile() {
 2   if (typeof this._isMobile === "boolean") {
 3     return this._isMobile;
 4   }
 5   var screenWidth = this.getScreenWidth();
 6   var fixViewPortsExperiment =
 7     rendererModel.runningExperiments.FixViewport ||
 8     rendererModel.runningExperiments.fixviewport;
 9   var fixViewPortsExperimentRunning =
10     fixViewPortsExperiment && fixViewPortsExperiment.toLowerCase() === "new";
11   if (!fixViewPortsExperiment) {
12     if (!this.isAppleMobileDevice()) {
13       screenWidth = screenWidth / window.devicePixelRatio;
14     }
15   }
16   var isMobileScreenSize = screenWidth < 600;
17   var isMobileUserAgent = false;
18   this._isMobile = isMobileScreenSize && this.isTouchScreen();
19   return this._isMobile;
20 }

是否是某类手机型号

 1 // 用devicePixelRatio和分辨率判断
 2 const isIphonex = () => {
 3   // X XS, XS Max, XR
 4   const xSeriesConfig = [
 5     {
 6       devicePixelRatio: 3,
 7       width: 375,
 8       height: 812
 9     },
10     {
11       devicePixelRatio: 3,
12       width: 414,
13       height: 896
14     },
15     {
16       devicePixelRatio: 2,
17       width: 414,
18       height: 896
19     }
20   ];
21   // h5
22   if (typeof window !== "undefined" && window) {
23     const isIOS = /iphone/gi.test(window.navigator.userAgent);
24     if (!isIOS) return false;
25     const { devicePixelRatio, screen } = window;
26     const { width, height } = screen;
27     return xSeriesConfig.some(
28       item =>
29         item.devicePixelRatio === devicePixelRatio &&
30         item.width === width &&
31         item.height === height
32     );
33   }
34   return false;
35 };

判断是否为数字类型

1 function isDigit(value) {
2   var patrn = /^[0-9]*$/;
3   if (patrn.exec(value) == null || value == "") {
4     return false;
5   } else {
6     return true;
7   }
8 }

判断是否苹果移动设备访问

1 function isAppleMobileDevice() {
2   return /iphone|ipod|ipad|Macintosh/i.test(navigator.userAgent.toLowerCase());
3 }

判断是否安卓移动设备访问

1 function isAndroidMobileDevice() {
2   return /android/i.test(navigator.userAgent.toLowerCase());
3 }

获取移动设备最大化大小

 1 function getZoom() {
 2   var screenWidth =
 3     Math.abs(window.orientation) === 90
 4       ? Math.max(screen.height, screen.width)
 5       : Math.min(screen.height, screen.width);
 6   if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) {
 7     screenWidth = screenWidth / window.devicePixelRatio;
 8   }
 9   var FixViewPortsExperiment =
10     rendererModel.runningExperiments.FixViewport ||
11     rendererModel.runningExperiments.fixviewport;
12   var FixViewPortsExperimentRunning =
13     FixViewPortsExperiment &&
14     (FixViewPortsExperiment === "New" || FixViewPortsExperiment === "new");
15   if (FixViewPortsExperimentRunning) {
16     return screenWidth / window.innerWidth;
17   } else {
18     return screenWidth / document.body.offsetWidth;
19   }
20 }

获取窗体可见范围的宽与高

1 function getViewSize() {
2   var de = document.documentElement;
3   var db = document.body;
4   var viewW = de.clientWidth == 0 ? db.clientWidth : de.clientWidth;
5   var viewH = de.clientHeight == 0 ? db.clientHeight : de.clientHeight;
6   return Array(viewW, viewH);
7 }

检验URL链接是否有效

 1 function getUrlState(URL) {
 2   var xmlhttp = new ActiveXObject("microsoft.xmlhttp");
 3   xmlhttp.Open("GET", URL, false);
 4   try {
 5     xmlhttp.Send();
 6   } catch (e) {
 7   } finally {
 8     var result = xmlhttp.responseText;
 9     if (result) {
10       if (xmlhttp.Status == 200) {
11         return true;
12       } else {
13         return false;
14       }
15     } else {
16       return false;
17     }
18   }
19 }

获取URL上的参数

 1 // 获取URL中的某参数值,不区分大小写
 2 // 获取URL中的某参数值,不区分大小写,
 3 // 默认是取'hash'里的参数，
 4 // 如果传其他参数支持取‘search’中的参数
 5 // @param {String} name 参数名称
 6 export function getUrlParam(name, type = "hash") {
 7   let newName = name,
 8     reg = new RegExp("(^|&)" + newName + "=([^&]*)(&|$)", "i"),
 9     paramHash = window.location.hash.split("?")[1] || "",
10     paramSearch = window.location.search.split("?")[1] || "",
11     param;
12 
13   type === "hash" ? (param = paramHash) : (param = paramSearch);
14 
15   let result = param.match(reg);
16 
17   if (result != null) {
18     return result[2].split("/")[0];
19   }
20   return null;
21 }

获取网页被卷去的位置

 1 function getScrollXY() {
 2   return document.body.scrollTop
 3     ? {
 4         x: document.body.scrollLeft,
 5         y: document.body.scrollTop
 6       }
 7     : {
 8         x: document.documentElement.scrollLeft,
 9         y: document.documentElement.scrollTop
10       };
11 }

获取移动设备屏幕宽度

 1 function getScreenWidth() {
 2   var smallerSide = Math.min(screen.width, screen.height);
 3   var fixViewPortsExperiment =
 4     rendererModel.runningExperiments.FixViewport ||
 5     rendererModel.runningExperiments.fixviewport;
 6   var fixViewPortsExperimentRunning =
 7     fixViewPortsExperiment && fixViewPortsExperiment.toLowerCase() === "new";
 8   if (fixViewPortsExperiment) {
 9     if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) {
10       smallerSide = smallerSide / window.devicePixelRatio;
11     }
12   }
13   return smallerSide;
14 }

获取页面宽度

1 function getPageWidth() {
2   var g = document,
3     a = g.body,
4     f = g.documentElement,
5     d = g.compatMode == "BackCompat" ? a : g.documentElement;
6   return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth);
7 }

获取页面可视宽度

1 function getPageViewWidth() {
2   var d = document,
3     a = d.compatMode == "BackCompat" ? d.body : d.documentElement;
4   return a.clientWidth;
5 }

获取页面可视高度

1 function getPageViewHeight() {
2   var d = document,
3     a = d.compatMode == "BackCompat" ? d.body : d.documentElement;
4   return a.clientHeight;
5 }

获取页面高度

1 function getPageHeight() {
2   var g = document,
3     a = g.body,
4     f = g.documentElement,
5     d = g.compatMode == "BackCompat" ? a : g.documentElement;
6   return Math.max(f.scrollHeight, a.scrollHeight, d.clientHeight);
7 }

获取页面scrollLeft

1 function getPageScrollLeft() {
2   var a = document;
3   return a.documentElement.scrollLeft || a.body.scrollLeft;
4 }

获取页面scrollTop

1 function getPageScrollTop() {
2   var a = document;
3   return a.documentElement.scrollTop || a.body.scrollTop;
4 }

获取移动设备初始化大小

 1 function getInitZoom() {
 2   if (!this._initZoom) {
 3     var screenWidth = Math.min(screen.height, screen.width);
 4     if (this.isAndroidMobileDevice() && !this.isNewChromeOnAndroid()) {
 5       screenWidth = screenWidth / window.devicePixelRatio;
 6     }
 7     this._initZoom = screenWidth / document.body.offsetWidth;
 8   }
 9   return this._initZoom;
10 }

获得URL中GET参数值

 1 // 用法：如果地址是 test.htm?t1=1&t2=2&t3=3, 那么能取得：GET["t1"], GET["t2"], GET["t3"]
 2 function getGet() {
 3   querystr = window.location.href.split("?");
 4   if (querystr[1]) {
 5     GETs = querystr[1].split("&");
 6     GET = [];
 7     for (i = 0; i < GETs.length; i++) {
 8       tmp_arr = GETs.split("=");
 9       key = tmp_arr[0];
10       GET[key] = tmp_arr[1];
11     }
12   }
13   return querystr[1];
14 }

格式化CSS样式代码

 1 function formatCss(s) {
 2   //格式化代码
 3   s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");
 4   s = s.replace(/;\s*;/g, ";"); //清除连续分号
 5   s = s.replace(/\,[\s\.\#\d]*{/g, "{");
 6   s = s.replace(/([^\s])\{([^\s])/g, "$1 {\n\t$2");
 7   s = s.replace(/([^\s])\}([^\n]*)/g, "$1\n}\n$2");
 8   s = s.replace(/([^\s]);([^\s\}])/g, "$1;\n\t$2");
 9   return s;
10 }

返回脚本内容

 1 function evalscript(s) {
 2   if (s.indexOf("<script") == -1) return s;
 3   var p = /<script[^\>]*?>([^\x00]*?)<\/script>/gi;
 4   var arr = [];
 5   while ((arr = p.exec(s))) {
 6     var p1 = /<script[^\>]*?src=\"([^\>]*?)\"[^\>]*?(reload=\"1\")?(?:charset=\"([\w\-]+?)\")?><\/script>/i;
 7     var arr1 = [];
 8     arr1 = p1.exec(arr[0]);
 9     if (arr1) {
10       appendscript(arr1[1], "", arr1[2], arr1[3]);
11     } else {
12       p1 = /<script(.*?)>([^\x00]+?)<\/script>/i;
13       arr1 = p1.exec(arr[0]);
14       appendscript("", arr1[2], arr1[1].indexOf("reload=") != -1);
15     }
16   }
17   return s;
18 }

判断是否以某个字符串结束

1 String.prototype.endWith = function(s) {
2   var d = this.length - s.length;
3   return d >= 0 && this.lastIndexOf(s) == d;
4 };

跨浏览器删除事件

 1 function delEvt(obj, evt, fn) {
 2   if (!obj) {
 3     return;
 4   }
 5   if (obj.addEventListener) {
 6     obj.addEventListener(evt, fn, false);
 7   } else if (oTarget.attachEvent) {
 8     obj.attachEvent("on" + evt, fn);
 9   } else {
10     obj["on" + evt] = fn;
11   }
12 }

时间日期格式转换

 1 Date.prototype.format = function(formatStr) {
 2   var str = formatStr;
 3   var Week = ["日", "一", "二", "三", "四", "五", "六"];
 4   str = str.replace(/yyyy|YYYY/, this.getFullYear());
 5   str = str.replace(
 6     /yy|YY/,
 7     this.getYear() % 100 > 9
 8       ? (this.getYear() % 100).toString()
 9       : "0" + (this.getYear() % 100)
10   );
11   str = str.replace(
12     /MM/,
13     this.getMonth() + 1 > 9
14       ? (this.getMonth() + 1).toString()
15       : "0" + (this.getMonth() + 1)
16   );
17   str = str.replace(/M/g, this.getMonth() + 1);
18   str = str.replace(/w|W/g, Week[this.getDay()]);
19   str = str.replace(
20     /dd|DD/,
21     this.getDate() > 9 ? this.getDate().toString() : "0" + this.getDate()
22   );
23   str = str.replace(/d|D/g, this.getDate());
24   str = str.replace(
25     /hh|HH/,
26     this.getHours() > 9 ? this.getHours().toString() : "0" + this.getHours()
27   );
28   str = str.replace(/h|H/g, this.getHours());
29   str = str.replace(
30     /mm/,
31     this.getMinutes() > 9
32       ? this.getMinutes().toString()
33       : "0" + this.getMinutes()
34   );
35   str = str.replace(/m/g, this.getMinutes());
36   str = str.replace(
37     /ss|SS/,
38     this.getSeconds() > 9
39       ? this.getSeconds().toString()
40       : "0" + this.getSeconds()
41   );
42   str = str.replace(/s|S/g, this.getSeconds());
43   return str;
44 };
45 
46 // 或
47 Date.prototype.format = function(format) {
48   var o = {
49     "M+": this.getMonth() + 1, //month
50     "d+": this.getDate(), //day
51     "h+": this.getHours(), //hour
52     "m+": this.getMinutes(), //minute
53     "s+": this.getSeconds(), //second
54     "q+": Math.floor((this.getMonth() + 3) / 3), //quarter
55     S: this.getMilliseconds() //millisecond
56   };
57   if (/(y+)/.test(format))
58     format = format.replace(
59       RegExp.$1,
60       (this.getFullYear() + "").substr(4 - RegExp.$1.length)
61     );
62   for (var k in o) {
63     if (new RegExp("(" + k + ")").test(format))
64       format = format.replace(
65         RegExp.$1,
66         RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length)
67       );
68   }
69   return format;
70 };
71 alert(new Date().format("yyyy-MM-dd hh:mm:ss"));

字符串长度截取

 1 function cutstr(str, len) {
 2     var temp,
 3         icount = 0,
 4         patrn = /[^\x00-\xff]/，
 5         strre = "";
 6     for (var i = 0; i < str.length; i++) {
 7         if (icount < len - 1) {
 8             temp = str.substr(i, 1);
 9                 if (patrn.exec(temp) == null) {
10                    icount = icount + 1
11             } else {
12                 icount = icount + 2
13             }
14             strre += temp
15             } else {
16             break;
17         }
18     }
19     return strre + "..."
20 }

获取当前路径

1 var currentPageUrl = "";
2 if (typeof this.href === "undefined") {
3   currentPageUrl = document.location.toString().toLowerCase();
4 } else {
5   currentPageUrl = this.href.toString().toLowerCase();
6 }

压缩CSS样式代码

1 function compressCss(s) {
2   //压缩代码
3   s = s.replace(/\/\*(.|\n)*?\*\//g, ""); //删除注释
4   s = s.replace(/\s*([\{\}\:\;\,])\s*/g, "$1");
5   s = s.replace(/\,[\s\.\#\d]*\{/g, "{"); //容错处理
6   s = s.replace(/;\s*;/g, ";"); //清除连续分号
7   s = s.match(/^\s*(\S+(\s+\S+)*)\s*$/); //去掉首尾空白
8   return s == null ? "" : s[1];
9 }

版本对比

function compareVersion(v1, v2) {
  v1 = v1.split(".");
  v2 = v2.split(".");

  var len = Math.max(v1.length, v2.length);

  while (v1.length < len) {
    v1.push("0");
  }

  while (v2.length < len) {
    v2.push("0");
  }

  for (var i = 0; i < len; i++) {
    var num1 = parseInt(v1[i]);
    var num2 = parseInt(v2[i]);

    if (num1 > num2) {
      return 1;
    } else if (num1 < num2) {
      return -1;
    }
  }
  return 0;
}

全角半角转换

 1 //iCase: 0全到半，1半到全，其他不转化
 2 function chgCase(sStr, iCase) {
 3   if (
 4     typeof sStr != "string" ||
 5     sStr.length <= 0 ||
 6     !(iCase === 0 || iCase == 1)
 7   ) {
 8     return sStr;
 9   }
10   var i,
11     oRs = [],
12     iCode;
13   if (iCase) {
14     /*半->全*/
15     for (i = 0; i < sStr.length; i += 1) {
16       iCode = sStr.charCodeAt(i);
17       if (iCode == 32) {
18         iCode = 12288;
19       } else if (iCode < 127) {
20         iCode += 65248;
21       }
22       oRs.push(String.fromCharCode(iCode));
23     }
24   } else {
25     /*全->半*/
26     for (i = 0; i < sStr.length; i += 1) {
27       iCode = sStr.charCodeAt(i);
28       if (iCode == 12288) {
29         iCode = 32;
30       } else if (iCode > 65280 && iCode < 65375) {
31         iCode -= 65248;
32       }
33       oRs.push(String.fromCharCode(iCode));
34     }
35   }
36   return oRs.join("");
37 }

确认是否是键盘有效输入值

 1 function checkKey(iKey) {
 2   if (iKey == 32 || iKey == 229) {
 3     return true;
 4   } /*空格和异常*/
 5   if (iKey > 47 && iKey < 58) {
 6     return true;
 7   } /*数字*/
 8   if (iKey > 64 && iKey < 91) {
 9     return true;
10   } /*字母*/
11   if (iKey > 95 && iKey < 108) {
12     return true;
13   } /*数字键盘1*/
14   if (iKey > 108 && iKey < 112) {
15     return true;
16   } /*数字键盘2*/
17   if (iKey > 185 && iKey < 193) {
18     return true;
19   } /*符号1*/
20   if (iKey > 218 && iKey < 223) {
21     return true;
22   } /*符号2*/
23   return false;
24 }

实现base64解码

 1 function base64_decode(data) {
 2   var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
 3   var o1,
 4     o2,
 5     o3,
 6     h1,
 7     h2,
 8     h3,
 9     h4,
10     bits,
11     i = 0,
12     ac = 0,
13     dec = "",
14     tmp_arr = [];
15   if (!data) {
16     return data;
17   }
18   data += "";
19   do {
20     h1 = b64.indexOf(data.charAt(i++));
21     h2 = b64.indexOf(data.charAt(i++));
22     h3 = b64.indexOf(data.charAt(i++));
23     h4 = b64.indexOf(data.charAt(i++));
24     bits = (h1 << 18) | (h2 << 12) | (h3 << 6) | h4;
25     o1 = (bits >> 16) & 0xff;
26     o2 = (bits >> 8) & 0xff;
27     o3 = bits & 0xff;
28     if (h3 == 64) {
29       tmp_arr[ac++] = String.fromCharCode(o1);
30     } else if (h4 == 64) {
31       tmp_arr[ac++] = String.fromCharCode(o1, o2);
32     } else {
33       tmp_arr[ac++] = String.fromCharCode(o1, o2, o3);
34     }
35   } while (i < data.length);
36   dec = tmp_arr.join("");
37   dec = utf8_decode(dec);
38   return dec;
39 }

返回顶部的通用方法

 1 function backTop(btnId) {
 2   var btn = document.getElementById(btnId);
 3   var d = document.documentElement;
 4   var b = document.body;
 5   window.onscroll = set;
 6   btn.style.display = "none";
 7   btn.onclick = function() {
 8     btn.style.display = "none";
 9     window.onscroll = null;
10     this.timer = setInterval(function() {
11       d.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
12       b.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
13       if (d.scrollTop + b.scrollTop == 0)
14         clearInterval(btn.timer, (window.onscroll = set));
15     }, 10);
16   };
17   function set() {
18     btn.style.display = d.scrollTop + b.scrollTop > 100 ? "block" : "none";
19   }
20 }
21 backTop("goTop");

动态加载脚本文件

 1 function appendscript(src, text, reload, charset) {
 2   var id = hash(src + text);
 3   if (!reload && in_array(id, evalscripts)) return;
 4   if (reload && $(id)) {
 5     $(id).parentNode.removeChild($(id));
 6   }
 7 
 8   evalscripts.push(id);
 9   var scriptNode = document.createElement("script");
10   scriptNode.type = "text/javascript";
11   scriptNode.id = id;
12   scriptNode.charset = charset
13     ? charset
14     : BROWSER.firefox
15     ? document.characterSet
16     : document.charset;
17   try {
18     if (src) {
19       scriptNode.src = src;
20       scriptNode.onloadDone = false;
21       scriptNode.onload = function() {
22         scriptNode.onloadDone = true;
23         JSLOADED[src] = 1;
24       };
25       scriptNode.onreadystatechange = function() {
26         if (
27           (scriptNode.readyState == "loaded" ||
28             scriptNode.readyState == "complete") &&
29           !scriptNode.onloadDone
30         ) {
31           scriptNode.onloadDone = true;
32           JSLOADED[src] = 1;
33         }
34       };
35     } else if (text) {
36       scriptNode.text = text;
37     }
38     document.getElementsByTagName("head")[0].appendChild(scriptNode);
39   } catch (e) {}
40 }

提取页面代码中所有网址

1 var aa = document.documentElement.outerHTML
2   .match(
3     /(url\(|src=|href=)[\"\']*([^\"\'\(\)\<\>\[\] ]+)[\"\'\)]*|(http:\/\/[\w\-\.]+[^\"\'\(\)\<\>\[\] ]+)/gi
4   )
5   .join("\r\n")
6   .replace(/^(src=|href=|url\()[\"\']*|[\"\'\>\) ]*$/gim, "");
7 alert(aa);

加入收藏夹

 1 function addFavorite(sURL, sTitle) {
 2   try {
 3     window.external.addFavorite(sURL, sTitle);
 4   } catch (e) {
 5     try {
 6       window.sidebar.addPanel(sTitle, sURL, "");
 7     } catch (e) {
 8       alert("加入收藏失败，请使用Ctrl+D进行添加");
 9     }
10   }
11 }

跨浏览器绑定事件

 1 function addEventSamp(obj, evt, fn) {
 2   if (!oTarget) {
 3     return;
 4   }
 5   if (obj.addEventListener) {
 6     obj.addEventListener(evt, fn, false);
 7   } else if (obj.attachEvent) {
 8     obj.attachEvent("on" + evt, fn);
 9   } else {
10     oTarget["on" + sEvtType] = fn;
11   }
12 }

HTML标签转义

 1 // HTML 标签转义
 2 // @param {Array.<DOMString>} templateData 字符串类型的tokens
 3 // @param {...} ..vals 表达式占位符的运算结果tokens
 4 //
 5 function SaferHTML(templateData) {
 6   var s = templateData[0];
 7   for (var i = 1; i < arguments.length; i++) {
 8     var arg = String(arguments[i]);
 9     // Escape special characters in the substitution.
10     s += arg
11       .replace(/&/g, "&")
12       .replace(/</g, "<")
13       .replace(/>/g, ">");
14     // Don't escape special characters in the template.
15     s += templateData[i];
16   }
17   return s;
18 }
19 // 调用
20 var html = SaferHTML`<p>这是关于字符串模板的介绍</p>`;

转义html标签

1 function HtmlEncode(text) {
2   return text
3     .replace(/&/g, "&")
4     .replace(/\"/g, '"')
5     .replace(/</g, "<")
6     .replace(/>/g, ">");
7 }

为元素添加trigger方法

 1 Element.prototype.trigger = function(type, data) {
 2   var event = document.createEvent("HTMLEvents");
 3   event.initEvent(type, true, true);
 4   event.data = data || {};
 5   event.eventName = type;
 6   event.target = this;
 7   this.dispatchEvent(event);
 8   return this;
 9 };
10 
11 NodeList.prototype.trigger = function(event) {
12   []["forEach"].call(this, function(el) {
13     el["trigger"](event);
14   });
15   return this;
16 };

为元素添加on方法

1 Element.prototype.on = Element.prototype.addEventListener;
2 
3 NodeList.prototype.on = function (event, fn) {、
4     []['forEach'].call(this, function (el) {
5         el.on(event, fn);
6     });
7     return this;
8 };

posted @ 2020-08-11 10:48 码上wonderful 阅读(239) 评论(0) 收藏举报