Tips:点此可运行HTML源码

js 功能函数集

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目录列表:

1.RandomNum 随机数
2.in_array判断
3.shuffle 数组乱序
4.is_function 是否函数
5.base64_encode 类php base64_encode函数
6.base64_decode 类php base64_decode函数
7.getImageFilesize 获取图片filesize
8.prDates 打印两日期间日期
9.getBetweenDates 获取两日期间所有日期,组成数组返回
10.getClass 获取HTML中的class
11.getScript 动态加载js文件
12.match_all  扩展js的match函数,得到相当g模式下返回子模式的效果
13.htmlToText 和 textToHtml  HTML与Text数据转换
14.str_pad  自动填充函数
15.jQuery幻灯片插件
16.图片淡入淡出效果幻灯片
17.eval解析
18.js数组长度count函数
19.js IP格式判断
20.强制数字类型转换
21.浏览器收藏为书签
22.js对象合并
23.ucFirst 首字符大写
24.下拉框添加删除
25.jQuery字体闪动效果
26.js字体闪动效果(同25)
27.css格式化

 

1.RandomNum 随机数

function RandomNum(under, over){ 
    switch(arguments.length){ 
        case 1: return parseInt(Math.random()*under+1); 
        case 2: return parseInt(Math.random()*(over-under+1) + under); 
        default: return 0;     
    } 
}

 

2.in_array判断

Array.prototype.S=String.fromCharCode(2);  
Array.prototype.in_array=function(e) {  
    var r=new RegExp(this.S+e+this.S);  
    return (r.test(this.S+this.join(this.S)+this.S));  
}

 

3.shuffle 数组乱序

Array.prototype.shuffle = function(){
    for(var j, x, l = i = this.length; i; j = parseInt(Math.random() * l), x = this[--i], this[i] = this[j], this[j] = x);
    return this;
};

 

 4.is_function 是否函数

function is_function(fn) {
    return !!fn && typeof fn != "string" && !fn.nodeName &&fn.constructor != Array && /^[\s[]?function/.test(fn + "");
}

 

5.base64_encode 类php base64_encode函数

var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";  //使用函数,这个变量是必须的。
function
base64_encode(input) { var output = ""; var chr1, chr2, chr3 = ""; var enc1, enc2, enc3, enc4 = ""; var i = 0; do { chr1 = input.charCodeAt(i++); chr2 = input.charCodeAt(i++); chr3 = input.charCodeAt(i++); enc1 = chr1 >> 2; enc2 = ((chr1 & 3) << 4) | (chr2 >> 4); enc3 = ((chr2 & 15) << 2) | (chr3 >> 6); enc4 = chr3 & 63; if (isNaN(chr2)) { enc3 = enc4 = 64; } else if (isNaN(chr3)) { enc4 = 64; } output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4); chr1 = chr2 = chr3 = ""; enc1 = enc2 = enc3 = enc4 = ""; } while ( i < input . length ); return output; }

普通压缩版base64_encode:

var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; //使用函数,这个变量是必须的。
function
base64_encode(input){var output="";var chr1,chr2,chr3="";var enc1,enc2,enc3,enc4="";var i=0;do{chr1=input.charCodeAt(i++);chr2=input.charCodeAt(i++);chr3=input.charCodeAt(i++);enc1=chr1>>2;enc2=((chr1&3)<<4)|(chr2>>4);enc3=((chr2&15)<<2)|(chr3>>6);enc4=chr3&63;if(isNaN(chr2)){enc3=enc4=64}else if(isNaN(chr3)){enc4=64}output=output+keyStr.charAt(enc1)+keyStr.charAt(enc2)+keyStr.charAt(enc3)+keyStr.charAt(enc4);chr1=chr2=chr3="";enc1=enc2=enc3=enc4=""}while(i<input.length);return output}

 

6.base64_decode 类php base64_decode函数

var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";  //使用函数,这个变量是必须的。
function
base64_decode(input) { var output = ""; var chr1, chr2, chr3 = ""; var enc1, enc2, enc3, enc4 = ""; var i = 0; if (input.length % 4 != 0) { return ""; } var base64test = /[^A-Za-z0-9\+\/\=]/g; if (base64test.exec(input)) { return ""; } do { enc1 = keyStr.indexOf(input.charAt(i++)); enc2 = keyStr.indexOf(input.charAt(i++)); enc3 = keyStr.indexOf(input.charAt(i++)); enc4 = keyStr.indexOf(input.charAt(i++)); chr1 = (enc1 << 2) | (enc2 >> 4); chr2 = ((enc2 & 15) << 4) | (enc3 >> 2); chr3 = ((enc3 & 3) << 6) | enc4; output = output + String.fromCharCode(chr1); if (enc3 != 64) { output += String.fromCharCode(chr2); } if (enc4 != 64) { output += String.fromCharCode(chr3); } chr1 = chr2 = chr3 = ""; enc1 = enc2 = enc3 = enc4 = ""; } while ( i < input . length ); return output; }

普通压缩版base64_decode:


var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";  //使用函数,这个变量是必须的。
function
base64_decode(input){var output="";var chr1,chr2,chr3="";var enc1,enc2,enc3,enc4="";var i=0;if(input.length%4!=0){return""}var base64test=/[^A-Za-z0-9\+\/\=]/g;if(base64test.exec(input)){return""}do{enc1=keyStr.indexOf(input.charAt(i++));enc2=keyStr.indexOf(input.charAt(i++));enc3=keyStr.indexOf(input.charAt(i++));enc4=keyStr.indexOf(input.charAt(i++));chr1=(enc1<<2)|(enc2>>4);chr2=((enc2&15)<<4)|(enc3>>2);chr3=((enc3&3)<<6)|enc4;output=output+String.fromCharCode(chr1);if(enc3!=64){output+=String.fromCharCode(chr2)}if(enc4!=64){output+=String.fromCharCode(chr3)}chr1=chr2=chr3="";enc1=enc2=enc3=enc4=""}while(i<input.length);return output}

 

7.getImageFilesize 获取图片filesize

function getImageFilesize(o) {
    x = window.XMLHttpRequest ? new window.XMLHttpRequest: new ActiveXObject("MSxml2.XMLHTTP");
    x.open("HEAD", o.src, false);
    x.send();
    alert("大小:" + x.getResponseHeader("Content-Length"));
}

 

8.prDates 打印两日期间日期

/*
 * 打印两日期间日期
 * start      YYYY-MM-DD
 * end         YYYY-MM-DD
 * with_start_end 是否包含起止日期,默认包含
 */
function prDates(start,end,with_start_end=true){
    var getDate=function(str){
        var tempDate=new Date();
        var list=str.split("-");
        tempDate.setFullYear(list[0]);
        tempDate.setMonth(list[1]-1);
        tempDate.setDate(list[2]);
        return tempDate;
    }
    var start=getDate(start);
    var end=getDate(end);
    if(start>end){
        var tempDate=start;
        start=end;
        end=tempDate;
    }
    if(with_start_end) document.write("<div>"+start.getFullYear()+"-"+(start.getMonth()+1)+"-"+start.getDate()+"</div>");    //start
    start.setDate(start.getDate()+1);
    while(!(start.getFullYear()==end.getFullYear()&&start.getMonth()==end.getMonth()&&start.getDate()==end.getDate())){
        document.write("<div>"+start.getFullYear()+"-"+(start.getMonth()+1)+"-"+start.getDate()+"</div>");
        start.setDate(start.getDate()+1);
    }
    if(with_start_end) document.write("<div>"+start.getFullYear()+"-"+(start.getMonth()+1)+"-"+start.getDate()+"</div>");    //end
}

 

 9.getBetweenDates 获取两日期间所有日期,组成数组返回

 1 /*
 2  * 获取两日期间日期
 3  * start                  YYYY-MM-DD
 4  * end                     YYYY-MM-DD
 5  * with_start_end         是否包含起止日期,默认包含,值为S表示仅包含起始日期,值为E表示仅包含结束日期
 6  * format_month         是否格式化月份1-9成01-09,默认格式化
 7  * format_date             是否格式化日期1-9成01-09,默认格式化
 8  * @return                 array
 9  */
10 var getBetweenDates = function(start,end,with_start_end=true,format_month=true,format_date=true){
11     var getDate=function(str){
12         var tempDate=new Date();
13         var list=str.split("-");
14         tempDate.setFullYear(list[0]);
15         tempDate.setMonth(list[1]-1);
16         tempDate.setDate(list[2]);
17         return tempDate;
18     };
19     Date.prototype.getFormatDate = function(flag){
20         return (flag&&this.getDate()<10)?'0'+this.getDate():this.getDate();
21     };
22     Date.prototype.getFormatMonth = function(flag){
23         return (flag&&this.getMonth()<10)?'0'+this.getMonth():this.getMonth();
24     };
25     var dates = new Array();
26     var start=getDate(start);
27     var end=getDate(end);
28     if(start>end){
29         var tempDate=start;
30         start=end;
31         end=tempDate;
32     }
33     if(with_start_end && with_start_end != 'E') dates.push(start.getFullYear()+"-"+(start.getFormatMonth()+1)+"-"+start.getFormatDate(format_date));    //start
34     start.setDate(start.getDate()+1);
35     while(!(start.getFullYear()==end.getFullYear()&&start.getMonth()==end.getMonth()&&start.getDate()==end.getDate())){
36         dates.push(start.getFullYear()+"-"+(start.getFormatMonth()+1)+"-"+start.getFormatDate(format_date));    //between
37         start.setDate(start.getDate()+1);
38     }
39     
40     if(with_start_end && with_start_end != 'S') dates.push(start.getFullYear()+"-"+(start.getFormatMonth()+1)+"-"+start.getFormatDate(format_date));    //end
41     return dates;
42 }

 

10.getClass 获取HTML中的class

 1 /**
 2  * className 类名
 3  * tagname HTML标签名,如div,td,ul等
 4  * @return Array 所有class对应标签对象组成的数组
 5  * @example
 6     <div class="abc">abc</div>
 7     var abc = getClass('abc');
 8     for(i=0;i<abc.length;i++){
 9         abc[i].style.backgroundColor='red';
10     }
11  */
12 function getClass(className,tagname/*='*'*/) {     //IE下不能用默认参数
if(typeof tagname == 'undefined') tagname = '*'; //modified
13 if (typeof(getElementsByClassName) == 'function') { 14 return getElementsByClassName(className); 15 } 16 else { 17 var tagname = document.getElementsByTagName(tagname); 18 var tagnameAll = []; 19 for (var i = 0; i < tagname.length; i++) { 20 //if (tagname[i].className == className) {
         if(tagname[i].className.indexOf(className) != -1) { //fixed
21 tagnameAll[tagnameAll.length] = tagname[i]; 22 } 23 } 24 return tagnameAll; 25 } 26 }

 

 11.getScript 动态加载js文件

(function(){
    var args = arguments;
    var i = 1;
    function getScript(url, fn){
        var a=document.createElement("script");
        a.async = !!arguments[0];
        a.src = args[i];
        a.onload = a.onreadystatechange = function(c,b){
            if (b || !a.readyState || /loaded|complete/.test(a.readyState)){
                a.onload = a.onreadystatechange = null;
                if (fn instanceof Function){
                    fn(i);
                }
                if (args[++i]){
                    getScript(args[i], fn);
                }
            }            
        };
        (document.getElementById("zljsc")||document.body).appendChild(a);
    }
    getScript(args[i]);
})(true, "http://files.cnblogs.com/Zjmainstay/ZjmainstayRunHTML.js", "http://files.cnblogs.com/Zjmainstay/swfobject.js", "http://files.cnblogs.com/Zjmainstay/Zjmainstay_cnblogs_global.js"); //可以追加多个

 

12.match_all  扩展js的match函数,得到相当g模式下返回子模式的效果

 1 /**
 2  *
 3  * javascript 匹配所有的匹配值,并返回每个匹配携带其子匹配组成的数组。
 4  * 返回数组结构:[["{\"a\":99}", "99"], ["{\"a\":86}", "86"], ["{\"a\":124}", "124"]]
 5  * @example
 6     var str = '[{"a":99},{"a":86},{"a":124}]';
 7     var pattern = /{"a":(\d+)}/gi;
 8     var ma = str.match_all(pattern);
 9     alert(ma.toSource());
10  *
11  */
12 String.prototype.match_all = function(pattern,replace/*=''*/){
    replace = replace || ''; //修正ie下不能使用默认参数问题,习惯了,又摔一跤~~
13 var matches = [];
//换掉eval写法
    //pattern = pattern.toString().replace(/(\/.*\/)([a-z]*)g([a-z]*)/i,'$1$2$3');
    //pattern = eval(pattern);
14 var patternParse = pattern.toString().match(/\/(.*)\/([a-z]*)g([a-z]*)/i);
15 pattern = new RegExp(patternParse[1], patternParse[2] + patternParse[3]);
16 var match = this.match(pattern); 17 var string = this; 18 while(!!match){ 19 matches.push(match); 20 string = string.replace(pattern,replace); 21 match = string.match(pattern); 22 } 23 return matches; 24 }

 

13.htmlToText 和 textToHtml  HTML与Text数据转换

1 function htmlToText(html) {
2     return html.replace(/\<br(?: \/)?\>/g, '\n').replace(/&amp;/g, '&').replace(/&lt;/g, '<').replace(/&gt;/g, '>');
3 }
4 
5 function textToHtml(text) {
6     return text.replace(/&/g, '&amp;').replace(/\</g, '&lt;').replace(/\>/g, '&gt;').replace(/\n/g, '<br>');
7 }

 

14.str_pad  自动填充函数

 1 /**
 2  *@param str            初始字符串
 3  *@param length         重复长度
 4  *@param pad            填充字符
 5  *@param type           填充类型
 6  *@return str
 7  */
 8 function str_pad(str,length=5,pad=' ',type='left'){
 9     if(isNaN(length)) length = 5;
10     length = Math.max(0,(length - str.length));
11     if(type == 'left'){
12         for(i=0;i<length;i++){
13             str = pad + str;
14         }
15     }else {
16         for(i=0;i<length;i++){
17             str += pad;
18         }
19     }
20     return str;
21 }

 15.jQuery幻灯片插件

 1 /**
 2  *  jQuery Plugin
 3  *  From http://www.jsfoot.com/jquery/images/cj/2012-07-17/694.html
 4  *  Modify By Zjmainstay, Blog:http://www.cnblogs.com/Zjmainstay
 5  *  @example $.mySlideShow('myItemid');                            //最简形式,默认开启自动切换,轮换时间为2秒(2000毫秒)
 6  *  @example $.mySlideShow('myItemid',{autoStart:false});        //关闭自动切换
 7  *  @example $.mySlideShow('myItemid',{switchingTime:3000});    //设置轮换时间
 8  */
 9 (function($){
10 var mySlideShow = function(id,options){
11     //显示图片函数,根据接收的index值显示相应的内容
12     var showPics = function(index) { //普通切换
13         var nowLeft = -index*sWidth; //根据index值计算ul元素的left值
14         $("#"+id+" ul").stop(true,false).animate({"left":nowLeft},300); //通过animate()调整ul元素滚动到计算出的position
15         $("#"+id+" .btn span").stop(true,false).animate({"opacity":"0.4"},300).eq(index).stop(true,false).animate({"opacity":"1"},300); //为当前的按钮切换到选中的效果
16     }
17     var sWidth = $("#"+id).width(); //获取焦点图的宽度(显示面积)
18     var len = $("#"+id+" ul li").length; //获取焦点图个数
19     var index = 0;
20     var picTimer;
21     options = options || {}
22     options.autoStart  = (options.autoStart==false) ? false : true;                        //默认自动播放
23     options.switchingTime = !isNaN(options.switchingTime) ? options.switchingTime : 2000;        //自动切换时间,默认2000毫秒
24     
25     //以下代码添加数字按钮和按钮后的半透明条,还有上一页、下一页两个按钮
26     var btn = "<div class='btnBg'></div><div class='btn'>";
27     for(var i=0; i < len; i++) {
28         btn += "<span></span>";
29     }
30     btn += "</div><div class='preNext pre'></div><div class='preNext next'></div>";
31     $("#"+id).append(btn);
32     $("#"+id+" .btnBg").css("opacity",0.5);
33 
34     //为小按钮添加鼠标滑入事件,以显示相应的内容
35     $("#"+id+" .btn span").css("opacity",0.4).mouseover(function() {
36         index = $("#"+id+" .btn span").index(this);
37         showPics(index);
38     }).eq(0).trigger("mouseover");
39 
40     //上一页、下一页按钮透明度处理
41     $("#"+id+" .preNext").css("opacity",0.2).hover(function() {
42         $(this).stop(true,false).animate({"opacity":"0.5"},300);
43     },function() {
44         $(this).stop(true,false).animate({"opacity":"0.2"},300);
45     });
46 
47     //上一页按钮
48     $("#"+id+" .pre").click(function() {
49         index -= 1;
50         if(index == -1) {index = len - 1;}
51         showPics(index);
52     });
53 
54     //下一页按钮
55     $("#"+id+" .next").click(function() {
56         index += 1;
57         if(index == len) {index = 0;}
58         showPics(index);
59     });
60 
61     //本例为左右滚动,即所有li元素都是在同一排向左浮动,所以这里需要计算出外围ul元素的宽度
62     $("#"+id+" ul").css("width",sWidth * (len));
63     
64     //鼠标滑上焦点图时停止自动播放,滑出时开始自动播放
65     //启用自动轮换
66     if(options.autoStart){
67         $("#"+id).hover(function() {
68             clearInterval(picTimer);
69         },function() {
70             picTimer = setInterval(function() {
71                 showPics(index);
72                 index++;
73                 if(index == len) {index = 0;}
74             },options.switchingTime);
75         }).trigger("mouseleave");
76     }
77 }
78 //扩展成jQuery插件
79 $.extend({mySlideShow:mySlideShow});
80 })(jQuery);

jQuery幻灯片插件演示:(运行此段代码(18))

View Code
 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 <html xmlns="http://www.w3.org/1999/xhtml">
 3 <head>
 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 5 <title>jquery图片滚动仿QQ商城带左右按钮控制焦点图片切换滚动</title>
 6 <meta name="description" content="jquery图片特效制作仿腾讯QQ商城首页banner焦点图片轮播切换效果,带索引按钮控制和左右按钮控制图片切换。jquery下载。" />
 7 <style type="text/css">
 8 *{margin:0;padding:0;}
 9 body{font-size:12px;color:#222;font-family:Verdana,Arial,Helvetica,sans-serif;background:#f0f0f0;}
10 .clearfix:after{content: ".";display: block;height: 0;clear: both;visibility: hidden;}
11 .clearfix{zoom:1;}
12 ul,li{list-style:none;}
13 img{border:0;}
14 .wrapper{width:800px;margin:0 auto;padding-bottom:50px;}
15 h1{height:50px;line-height:50px;font-size:22px;font-weight:normal;font-family:"Microsoft YaHei",SimHei;margin-bottom:20px;}
16 /* focus */
17 #focus{width:800px;height:280px;overflow:hidden;position:relative;}
18 #focus ul{height:380px;position:absolute;}
19 #focus ul li{float:left;width:800px;height:280px;overflow:hidden;position:relative;background:#000;}
20 #focus ul li div{position:absolute;overflow:hidden;}
21 #focus .btnBg{position:absolute;width:800px;height:20px;left:0;bottom:0;background:#000;}
22 #focus .btn{position:absolute;width:780px;height:10px;padding:5px 10px;right:0;bottom:0;text-align:right;}
23 #focus .btn span{display:inline-block;_display:inline;_zoom:1;width:25px;height:10px;_font-size:0;margin-left:5px;cursor:pointer;background:#fff;}
24 #focus .btn span.on{background:#fff;}
25 #focus .preNext{width:45px;height:100px;position:absolute;top:90px;background:url(http://www.jsfoot.com/jquery/demo/2012-07-17/img/sprite.png) no-repeat 0 0;cursor:pointer;}
26 #focus .pre{left:0;}
27 #focus .next{right:0;background-position:right top;}
28 </style>
29 
30 <script type="text/javascript" src="http://files.cnblogs.com/Zjmainstay/jquery-1.6.2.min.js"></script>
31 <script type="text/javascript" src="http://files.cnblogs.com/Zjmainstay/jquery.myslideshow.js"></script>
32 <script type="text/javascript">
33 (function($){
34     $(document).ready(function(){
35         $.mySlideShow('focus');
36     });
37 })(jQuery);
38 </script>
39 </head>
40 
41 <body>
42 
43     <div class="wrapper">
44         <h1>jquery图片滚动仿QQ商城带左右按钮控制焦点图片切换滚动</h1>
45     
46         <div id="focus">
47             <ul>
48                 <li><a href="http://www.jsfoot.com/" target="_blank"><img src="http://www.jsfoot.com/jquery/demo/2012-07-17/img/01.jpg" alt="QQ商城焦点图效果下载" /></a></li>
49                 <li><a href="http://www.jsfoot.com/" target="_blank"><img src="http://www.jsfoot.com/jquery/demo/2012-07-17/img/02.jpg" alt="QQ商城焦点图效果教程" /></a></li>
50                 <li><a href="http://www.jsfoot.com/" target="_blank"><img src="http://www.jsfoot.com/jquery/demo/2012-07-17/img/03.jpg" alt="jquery商城焦点图效果" /></a></li>
51                 <li><a href="http://www.jsfoot.com/" target="_blank"><img src="http://www.jsfoot.com/jquery/demo/2012-07-17/img/04.jpg" alt="jquery商城焦点图代码" /></a></li>
52                 <li><a href="http://www.jsfoot.com/" target="_blank"><img src="http://www.jsfoot.com/jquery/demo/2012-07-17/img/05.jpg" alt="jquery商城焦点图源码" /></a></li>
53             </ul>
54         </div><!--focus end-->
55     
56     </div><!-- wrapper end -->
57 
58 </body>
59 <!-- Copyright http://www.jsfoot.com/jquery/images/cj/2012-07-17/694.html -->
60 <!-- Modify by Zjmainstay -->
61 </html>

 

16、图片淡入淡出效果幻灯片

 1 window.onload = function ()
 2 {
 3     var oBox = document.getElementById("box");
 4     var aUl = document.getElementsByTagName("ul");
 5     var aImg = aUl[0].getElementsByTagName("li");
 6     var aNum = aUl[1].getElementsByTagName("li");
 7     var timer = play = null;
 8     var i = index = 0;    
 9     var bOrder = true;
10     //切换按钮
11     for (i = 0; i < aNum.length; i++)
12     {
13         aNum[i].index = i;
14         aNum[i].onclick = function ()
15         {
16             show(this.index)
17         }
18     }
19     
20     //鼠标划过关闭定时器
21     oBox.onmouseover = function ()
22     {
23         clearInterval(play)    
24     };
25     
26     //鼠标离开启动自动播放
27     oBox.onmouseout = function ()
28     {
29         //autoPlay()
30     };    
31     
32     //自动播放函数
33     function autoPlay ()
34     {
35         play = setInterval(function () {
36             //判断播放顺序
37             bOrder ? index++ : index--;            
38             
39             //正序
40             index >= aImg.length && (index = aImg.length - 2, bOrder = false);
41             
42             //倒序
43             index <= 0 && (index = 0, bOrder = true);
44             
45             //调用函数
46             show(index)
47         },2000);    
48     }
49     //autoPlay();//应用
50     
51     //图片切换, 淡入淡出效果
52     function show (a)
53     {
54         index = a;
55         var alpha = 0;
56         for (i = 0; i < aNum.length; i++)aNum[i].className = "";
57         aNum[index].className = "current";
58         clearInterval(timer);            
59         
60         for (i = 0; i < aImg.length; i++)
61         {
62             aImg[i].style.opacity = 0;
63             aImg[i].style.filter = "alpha(opacity=0)";    
64         }
65         
66         timer = setInterval(function () {
67             alpha += 5;
68             alpha > 100 && (alpha =100);
69             aImg[index].style.opacity = alpha / 100;
70             aImg[index].style.filter = "alpha(opacity = " + alpha + ")";
71             alpha == 100 && clearInterval(timer)
72         },50);
73     }
74 };

 17、eval解析

1 function parseEval(str){
2     str = str.replace(/^eval/,'');
3     return eval(str);
4 }

 18、js数组长度count函数

 1 /**
 2  * Javascript 数组长度统计
 3  * Javascript 关联数组length为0
 4  *@example
 5     var arr = [];
 6     arr["a"] = 1;
 7     arr["b"] = [1,2,3];
 8     alert(arr.length+','+arr.count(true)+','+arr.count());
 9  */
10 Array.prototype.count = function(mode){
11     //form http://phpjs.org/functions/count/
12     function count (mixed_var, mode) {
13       // http://kevin.vanzonneveld.net
14       // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
15       // +      input by: Waldo Malqui Silva
16       // +   bugfixed by: Soren Hansen
17       // +      input by: merabi
18       // +   improved by: Brett Zamir (http://brett-zamir.me)
19       // +   bugfixed by: Olivier Louvignes (http://mg-crea.com/)
20       // *     example 1: count([[0,0],[0,-4]], 'COUNT_RECURSIVE');
21       // *     returns 1: 6
22       // *     example 2: count({'one' : [1,2,3,4,5]}, 'COUNT_RECURSIVE');
23       // *     returns 2: 6
24       var key, cnt = 0;
25 
26       if (mixed_var === null || typeof mixed_var === 'undefined') {
27         return 0;
28       } else if (mixed_var.constructor !== Array && mixed_var.constructor !== Object) {
29         return 1;
30       }
31 
32       if (mode === 'COUNT_RECURSIVE') {
33         mode = 1;
34       }
35       if (mode != 1) {
36         mode = 0;
37       }
38 
39       for (key in mixed_var) {
40         if (mixed_var.hasOwnProperty(key)) {
41           cnt++;
42           if (mode == 1 && mixed_var[key] && (mixed_var[key].constructor === Array || mixed_var[key].constructor === Object)) {
43             cnt += count(mixed_var[key], 1);    //这里改this.count为count,否则会导致嵌套数组未定义错误
44           }
45         }
46       }
47 
48       return cnt;
49     }
50     return count(this,mode);
51 }

 19、js IP格式判断

1 /**
2  * (?!^0(\.0){3}$)                 //排除0.0.0.0
3  * (?!^255(\.255){3}$)             //排除255.255.255.255
4  * ((25[0-5])|(2[0-4]\d)|(1\d{2})|(\d{2})|(\d))  //250-255 或 200-249 或 100-199 或 00-99 或 0-9
5  * 排序从左到右,不可逆。
6  */
7 function validateIP(str){
8     return !!str.match(/^(?!^0(\.0){3}$)(?!^255(\.255){3}$)((25[0-5])|(2[0-4]\d)|(1\d{2})|(\d{2})|(\d))(\.((25[0-5])|(2[0-4]\d)|(1\d{2})|(\d{2})|(\d))){3}$/);
9 }

//改进:
首先多谢 @枕头老爸 在闪存里的评论,激发了我简写的冲动,嘻...
function validateIP(str){
      return !!str.match(/^(((25[0-5])|(2[0-4]\d)|(1\d{2})|(\d{2})|(\d))($|(?!\.$)\.)){4}$/);
}
//红色标明部分表示(结束($) 或(|) 不是以点结束((?!\.$))的加上点(\.))

 20、强制数字类型转换

1 function getNum(num){
2     if(typeof(num) == 'undefined' || !num || !num.toString().trim().match(/^\d+(\.\d+)?$/)) return 0;
3     return parseFloat(num);
4 }

 21、浏览器收藏为书签

 1 function createBookmark(sURL,sTitle) {
 2     if (document.all && window.external) {
 3         window.external.AddFavorite (sURL,sTitle);
 4     }
 5     else if (window.sidebar) { 
 6         window.sidebar.addPanel(sTitle,sURL,'');
 7     } 
 8     else {
 9         alert (''
10         +'抱歉,您的浏览器不能自动加入收藏,'
11         +'请用快捷键 Ctrl+D 加入收藏.'
12         );
13     }
14 }

 22、js对象合并

 1 /**
 2  * js对象合并方法
 3  * @example
 4     var obj = {};
 5     obj['a'] = 1;
 6     obj['b'] = 1;
 7     obj['c'] = 1;
 8     var obj2 = {"a":2,"e":1};
 9     var obj3 = {"f":2,"g":1};
10     var arr = {};
11     arr = obj.join(obj2).join(obj3);
12     console.log(obj);    //这里表明obj没被改动
13     console.log(arr);
14  *
15  */
16 Object.prototype.join = function(obj,override){
17     function Temp(){}
18     Temp.prototype = this;
19     var self = new Temp();        //js对象赋值是引用赋值,直接使用var self = this;那么后面的self改动将反馈到原obj
20     if(typeof(obj) == 'object'){
21         if(typeof(override) == 'undefined') override = true;    //默认覆盖
22         for(var o in obj){
23             if(!override && !!self[o]) continue;
24             self[o] = obj[o];
25         }
26     }
27     return self;
28 }

 23、ucFirst 首字符大写

1 function ucFirst(str){
2     if(!!str) return str[0].toUpperCase() + str.substr(1);
3     else return str;
4 }

 24、下拉框添加删除

 1 <html>
 2 <head>
 3 <title>网页特效|111cn.net/左右选择添加删除内容菜单</title>
 4 <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
 5 </head>
 6 <body>
 7 <p>选定一项或多项然后点击添加或移除(按住shift或ctrl可以多选),或在选择项上双击进行添加和移除。</p>
 8 <form method="post" name="myform">
 9   <table border="0" width="300">
10     <tr>
11       <td width="40%">
12         <select style="width:100%;" multiple name="list1" size="12" ondblclick="moveOption(document.myform.list1, document.myform.list2)">
13             <option value="北京">北京</option>
14             <option value="上海">上海</option>
15             <option value="山东">山东</option>
16             <option value="安徽">安徽</option>
17             <option value="重庆">重庆</option>
18             <option value="福建">福建</option>
19             <option value="甘肃">甘肃</option>
20             <option value="广东">广东</option>
21             <option value="广西">广西</option>
22             <option value="贵州">贵州</option>
23             <option value="海南">海南</option>
24             <option value="河北">河北</option>
25             <option value="黑龙江">黑龙江</option>
26             <option value="河南">河南</option>
27             <option value="湖北">湖北</option>
28             <option value="湖南">湖南</option>
29             <option value="内蒙古">内蒙古</option>
30             <option value="江苏">江苏</option>
31             <option value="江西">江西</option>
32             <option value="吉林">吉林</option>
33             <option value="辽宁">辽宁</option>
34             <option value="宁夏">宁夏</option>
35             <option value="青海">青海</option>
36             <option value="山西">山西</option>
37             <option value="陕西">陕西</option>
38             <option value="四川">四川</option>
39             <option value="天津">天津</option>
40             <option value="西藏">西藏</option>
41             <option value="新疆">新疆</option>
42             <option value="云南">云南</option>
43             <option value="浙江">浙江</option>
44             <option value="香港">香港</option>
45             <option value="澳门">澳门</option>
46             <option value="台湾">台湾</option>
47             <option value="其他">其他</option>
48         </select>
49       </td>
50       <td width="20%" align="center">
51         <input type="button" value="添加" onclick="moveOption(document.myform.list1, document.myform.list2)"><br><br>
52         <input type="button" value="删除" onclick="moveOption(document.myform.list2, document.myform.list1)">
53       </td>
54       <td width="40%">
55         <select style="width:100%;" multiple name="list2" size="12" ondblclick="moveOption(document.myform.list2, document.myform.list1)">
56         </select>
57       </td>
58     </tr>
59   </table>
60 值:<input type="text" name="city" size="40" value="" />
61 </form>
62 <script type="text/javascript">
63 <!--
64 function moveOption(e1, e2){
65     try{
66         for(var i=0;i<e1.options.length;i++){
67             if(e1.options[i].selected){
68                 var e = e1.options[i];
69                 e2.options.add(new Option(e.text, e.value));
70                 e1.remove(i);
71                 i=i-1
72             }
73         }
74         document.myform.city.value=getvalue(document.myform.list2);
75     }
76     catch(e){}
77 }
78 function getvalue(geto){
79     var allvalue = "";
80     for(var i=0;i<geto.options.length;i++){
81         allvalue +=geto.options[i].value + ",";
82     }
83     return allvalue;
84 }
85 //-->
86 </script>
87 </body>
88 </html>

 

 25、jQuery字体闪动效果

 1 <html>
 2 <head>
 3     <title>字体闪烁</title>
 4     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 5     <meta http-equiv="Content-Language" content="zh-CN" />
 6     <script type="text/javascript" src="http://files.cnblogs.com/Zjmainstay/jquery-1.6.2.min.js"></script>
 7     <!--<script type="text/javascript" src="http://files.cnblogs.com/Zjmainstay/jquery-shake.js"></script>-->
 8 </head>
 9 <body>
10 <style>.red{border:1px solid #d00; background:#ffe9e8; color:#d00;}</style>
11 <div id="shakeDiv">点击闪烁3下...</div>
12 <script type="text/javascript">
13 /**
14  * jQuery 插件
15  * HTML标签闪动特效
16  * @params             ele     jQuery对象
17  * @params             cls     变换的class 
18  * @params             times     闪动次数 
19  * @example
20      <style>.red{border:1px solid #d00; background:#ffe9e8; color:#d00;}</style>
21      <div id="shakeDiv">闪烁10下...</div>
22      $.shake($("#shakeDiv"),"red",10);
23  */
24 $.extend({"shake":function(ele, cls, times) {
25     var i = 0,
26     t = false,
27     o = ele.attr("class") + " ",
28     c = "",
29     times = times || 2;
30     if (t) return;
31     t = setInterval(function() {
32         i++;
33         c = i % 2 ? o + cls: o;
34         ele.attr("class", c);
35         if (i == 2 * times) {
36             clearInterval(t);
37             ele.removeClass(cls);
38         }
39     },
40     200);
41 }});
42 $("#shakeDiv").click(function(){
43     $.shake($(this),'red',3);
44 });
45 </script>
46 </body>
47 </html>

 

26、js字体闪动效果

 1 <html>
 2 <head>
 3     <title>js字体闪动效果</title>
 4     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 5     <meta http-equiv="Content-Language" content="zh-CN" />
 6     <script type="text/javascript" src="http://files.cnblogs.com/Zjmainstay/jquery-1.6.2.min.js"></script>
 7 </head>
 8 <body>
 9 <style>.red{border:1px solid #d00; background:#ffe9e8; color:#d00;}</style>
10 <input type="button" value="Shake Me" id="shakeme" onclick="shake(this,'red',3)"/>
11 <script type="text/javascript">
12 /**
13  * js 字体闪动效果函数
14  * @params         id        标签id或dom对象
15  * @params        cls        闪动变换的class
16  * @params        times    闪动次数
17  * @example
18 //通过id调用方式
19 shake('shakeme','red',3);
20 //通过dom对象调用方式
21 shake(document.getElementById('shakeme'),'red',3);
22 //直接使用this代替
23 <input type="button" value="Shake Me" id="shakeme" onclick="shake(this,'red',3)"/>
24  */
25 function shake(id,cls,times){
26     var i = 0,
27     t = false,
28     ele = (typeof id == 'object') ? id : document.getElementById(id),
29     o = ele.className,
30     c = "",
31     times = times || 2;
32     t = setInterval(function() {
33         i++;
34         c = i % 2 ? (o+" "+cls) : o;
35         ele.className = c;
36         if (i == 2 * times) {
37             clearInterval(t);
38             ele.className = o;
39         }
40     },
41     200);
42 }
43 </script>
44 </body>
45 </html>

 27、css格式化

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 <html xmlns="http://www.w3.org/1999/xhtml">
 3 <head>
 4     <title>CSS格式化</title>
 5     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 6     <meta http-equiv="Content-Language" content="zh-CN" />
 7 </head>
 8 <body>
 9 <style>
10 .bd_border{width:650px;border: 1px solid #ACCEE0;margin: 0;padding: 3px;text-align: left;}
11 </style>
12 <div class="bd_border">
13   <table width="100%" border="0" cellspacing="3" cellpadding="0">
14     <tbody><tr>
15       <td>提供的CSS代码格式化和css在线压缩工具,不需要使用YUI Compressor 或者 CSSTidy等离线工具,直接在线操作。</td>
16     </tr>
17     <tr>
18       <td> 
19           /*请将CSS代码复制到下面*/ 
20           <a alt="from" href="http://www.jb51.net/tools/cssyasuo.shtml">
21             <font color="#0000ff">CSS代码格式化</font>
22           </a>
23       </td>
24     </tr>
25     <tr>
26       <td><textarea style="WIDTH: 100%; HEIGHT: 300px" title="www.jb51.net" id="code"></textarea></td>
27     </tr>
28     <tr>
29       <td>
30           <input type="button" value="格式化" onclick="$('code').value = CSSdecode($('code').value);"> | 
31           <input type="button" value="压缩化" onclick="$('code').value = CSSencode($('code').value);"> | 
32           <input type="button" value="复制" onclick="window.clipboardData.setData('Text',$('code').value);"> | 
33           <input type="button" value="粘贴" onclick="$('code').value = window.clipboardData.getData('Text');"> | 
34           <input type="button" value="清空" onclick="$('code').value = ''"> 
35       </td>
36     </tr>
37   </tbody></table>
38 </div>
39 <script type="text/javascript">
40 <!--
41 function $() {
42 var elements = new Array();
43 for (var i = 0; i < arguments.length; i++) {
44 var element = arguments[i];
45 if (typeof element == 'string')
46 element = document.getElementById(element);
47 if (arguments.length == 1)
48 return element;
49 elements.push(element);
50 }
51 return elements;
52 }
53 function CSSencode(code)
54 {
55 code = code.replace(/\n/ig,'');
56 code = code.replace(/(\s){2,}/ig,'$1');
57 code = code.replace(/\t/ig,'');
58 code = code.replace(/\n\}/ig,'\}');
59 code = code.replace(/\n\{\s*/ig,'\{');
60 code = code.replace(/(\S)\s*\}/ig,'$1\}');
61 code = code.replace(/(\S)\s*\{/ig,'$1\{');
62 code = code.replace(/\{\s*(\S)/ig,'\{$1');
63 return code;
64 }
65 function CSSdecode(code)
66 {
67 code = code.replace(/(\s){2,}/ig,'$1');
68 code = code.replace(/(\S)\s*\{/ig,'$1 {');
69 code = code.replace(/\*\/(.[^\}\{]*)}/ig,'\*\/\n$1}');
70 code = code.replace(/\/\*/ig,'\n\/\*');
71 code = code.replace(/;\s*(\S)/ig,';\n\t$1');
72 code = code.replace(/\}\s*(\S)/ig,'\}\n$1');
73 code = code.replace(/\n\s*\}/ig,'\n\}');
74 code = code.replace(/\{\s*(\S)/ig,'\{\n\t$1');
75 code = code.replace(/(\S)\s*\*\//ig,'$1\*\/');
76 code = code.replace(/\*\/\s*([^\}\{]\S)/ig,'\*\/\n$1');        //modified '\*\/\n\t$1'=>'\*\/\n$1'
77 code = code.replace(/(\S)\}/ig,'$1\n\}');
78 code = code.replace(/(\n){2,}/ig,'\n');
79 code = code.replace(/:/ig,': ');
80 code = code.replace(/ /ig,' ');
81 code = code.replace(/^\n*/ig,'');    //Add
82 return code;
83 }
84 //--> 
85 </script>
86 </body>
87 </html>

 

 

 

 代码压缩工具:js代码格式化工具

PS:欢迎评论,我一定会追加您贡献的方法哦。

 

posted @ 2012-09-04 21:46 Zjmainstay 阅读(...) 评论(...) 编辑 收藏
实现请参考《为博客园添加标签云动画