自己研究： jQuery拖拽滑动验证码插件 slideunlock.js
原理：（别人说）
响应时间，拖拽速度，时间，位置，轨迹，重试次数等。
这些因素能够构成一个采样结果或者辨识特性。
只获取到滑动时间，滑动的长度。
效果：
html页面
<link href="css/slide-unlock.css" rel="stylesheet">
<script type="text/javascript" src="js/jquery-2.0.2.min.js"></script>
<div id="slider">
<div id="slider_bg"></div>
<span id="label">>></span> <span id="labelTip">拖动滑块验证</span>
</div>
<script>
var startTime = 0;
var endTime = 0;
var numTime = 0;
$(function () {
var slider = new SliderUnlock("#slider",{
successLabelTip : "欢迎注册"
},function(){
var sli_width = $("#slider_bg").width();
alert("验证成功");
endTime = nowTime();
numTime = endTime-startTime;
endTime = 0;
startTime = 0;
// 获取到滑动使用的时间 滑动的宽度
alert( numTime );
alert( sli_width );
});
slider.init();
})
/**
* 获取时间精确到毫秒
* @type
*/
function nowTime(){
var myDate = new Date();
var H = myDate.getHours();//获取小时
var M = myDate.getMinutes(); //获取分钟
var S = myDate.getSeconds();//获取秒
var MS = myDate.getMilliseconds();//获取毫秒
var milliSeconds = H * 3600 * 1000 + M * 60 * 1000 + S * 1000 + MS;
return milliSeconds;
}
</script>
<script src="js/jquery.slideunlock.js"></script>
css样式
#slider {
margin: 10px 5%;
width: 90%;
height: 40px;
position: relative;
border-radius: 8px;
background-color: #dae2d0;
overflow: hidden;
text-align: center;
user-select: none;
-moz-user-select: none;
-webkit-user-select: none;
}
#slider_bg {
position: absolute;
left: 0;
top: 0;
height: 100%;
background-color: #7AC23C;
z-index: 1;
}
#label {
width: 46px;
position: absolute;
left: 0;
top: 0;
height: 38px;
line-height: 38px;
border: 1px solid #cccccc;
background: #fff;
z-index: 3;
cursor: move;
color: #ff9e77;
font-size: 16px;
font-weight: 900;
}
#labelTip {
position: absolute;
left: 0;
width: 100%;
height: 100%;
font-size: 13px;
font-family: 'Microsoft Yahei', serif;
color: #787878;
line-height: 38px;
text-align: center;
z-index: 2;
}
js效果
/**
* jquery plugin -- jquery.slideunlock.js
* www.sucaijiayuan.com
* created: March 27, 2016
*/
;(function ($,window,document,undefined) {
function SliderUnlock(elm, options, success){
var me = this;
var $elm = me.checkElm(elm) ? $(elm) : $;
success = me.checkFn(success) ? success : function(){};
var opts = {
successLabelTip: "Successfully Verified",
duration: 200,
swipestart: false,
min: 0,
max: $elm.width(),
index: 0,
IsOk: false,
lableIndex: 0
};
opts = $.extend(opts, options||{});
//$elm
me.elm = $elm;
//opts
me.opts = opts;
//是否开始滑动
me.swipestart = opts.swipestart;
//最小值
me.min = opts.min;
//最大值
me.max = opts.max;
//当前滑动条所处的位置
me.index = opts.index;
//是否滑动成功
me.isOk = opts.isOk;
//滑块宽度
me.labelWidth = me.elm.find('#label').width();
//滑块背景
me.sliderBg = me.elm.find('#slider_bg');
//鼠标在滑动按钮的位置
me.lableIndex = opts.lableIndex;
//success
me.success = success;
}
SliderUnlock.prototype.init = function () {
var me = this;
me.updateView();
me.elm.find("#label").on("mousedown", function (event) {
var e = event || window.event;
me.lableIndex = e.clientX - this.offsetLeft;
me.handerIn();
}).on("mousemove", function (event) {
me.handerMove(event);
}).on("mouseup", function (event) {
me.handerOut();
}).on("mouseout", function (event) {
me.handerOut();
}).on("touchstart", function (event) {
var e = event || window.event;
me.lableIndex = e.originalEvent.touches[0].pageX - this.offsetLeft;
me.handerIn();
}).on("touchmove", function (event) {
me.handerMove(event, "mobile");
}).on("touchend", function (event) {
me.handerOut();
});
};
/**
* 鼠标/手指接触滑动按钮
*/
SliderUnlock.prototype.handerIn = function () {
var me = this;
me.swipestart = true;
var myDate = new Date();
var H = myDate.getHours();//获取小时
var M = myDate.getMinutes(); //获取分钟
var S = myDate.getSeconds();//获取秒
var MS = myDate.getMilliseconds();//获取毫秒
var milliSeconds = H * 3600 * 1000 + M * 60 * 1000 + S * 1000 + MS;
startTime = milliSeconds;
me.min = 0;
me.max = me.elm.width();
};
/**
* 鼠标/手指移出
*/
SliderUnlock.prototype.handerOut = function () {
var me = this;
//停止
me.swipestart = false;
weizhi = me.labelWidth;
//me.move();
if (me.index < me.max) {
me.reset();
}
};
/**
* 鼠标/手指移动
* @param event
* @param type
*/
SliderUnlock.prototype.handerMove = function (event, type) {
var me = this;
if (me.swipestart) {
event.preventDefault();
event = event || window.event;
if (type == "mobile") {
me.index = event.originalEvent.touches[0].pageX - me.lableIndex;
} else {
me.index = event.clientX - me.lableIndex;
}
me.move();
}
};
/**
* 鼠标/手指移动过程
*/
SliderUnlock.prototype.move = function () {
var me = this;
if ((me.index + me.labelWidth) >= me.max) {
me.index = me.max - me.labelWidth -2;
//停止
me.swipestart = false;
//解锁
me.isOk = true;
}
if (me.index < 0) {
me.index = me.min;
//未解锁
me.isOk = false;
}
if (me.index+me.labelWidth+2 == me.max && me.max > 0 && me.isOk) {
//解锁默认操作
$('#label').unbind().next('#labelTip').
text(me.opts.successLabelTip).css({'color': '#fff'});
me.success();
}
me.updateView();
};
/**
* 更新视图
*/
SliderUnlock.prototype.updateView = function () {
var me = this;
me.sliderBg.css('width', me.index);
me.elm.find("#label").css("left", me.index + "px")
};
/**
* 重置slide的起点
*/
SliderUnlock.prototype.reset = function () {
var me = this;
startTime = 0;
me.index = 0;
me.sliderBg .animate({'width':0},me.opts.duration);
me.elm.find("#label").animate({left: me.index}, me.opts.duration)
.next("#lableTip").animate({opacity: 1}, me.opts.duration);
me.updateView();
};
/**
* 检测元素是否存在
* @param elm
* @returns {boolean}
*/
SliderUnlock.prototype.checkElm = function (elm) {
if($(elm).length > 0){
return true;
}else{
throw "this element does not exist.";
}
};
/**
* 检测传入参数是否是function
* @param fn
* @returns {boolean}
*/
SliderUnlock.prototype.checkFn = function (fn) {
if(typeof fn === "function"){
return true;
}else{
throw "the param is not a function.";
}
};
window['SliderUnlock'] = SliderUnlock;
})(jQuery, window, document);
两个链接
https://www.zhihu.com/question/32209043/answer/55252171
http://www.zhihu.com/question/35538123
