js登入滑動驗證的實現

本文主要為大家分享一篇js登入滑動驗證的實作(不滑動無法登陸)，具有很好的參考價值，希望對大家有所幫助。一起跟著小編過來看看吧，希望能幫助大家。

js的判斷這裡是根據滑桿的位置來判斷，應該是用一個flag判斷

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<title>登录</title>
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<style>
* {
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body {
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ul, li {
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a {
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.ani {
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.none {
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#slider {
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#slider .handler {
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.handler_ok_bg {
 background: #fff
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 no-repeat center;
}
#slider .drag_bg {
 background-color: #7ac23c;
 height: 34px;
 width: 0px;
}
#slider .drag_text {
 position: absolute;
 top: 0px;
 width: 300px;
 -moz-user-select: none;
 -webkit-user-select: none;
 user-select: none;
 -o-user-select: none;
 -ms-user-select: none;
}
.unselect {
 -moz-user-select: none;
 -webkit-user-select: none;
 -ms-user-select: none;
}
.slide_ok {
 color: #fff;
}
</style>

<style>
.btn-primary {
 background-color: #0000FF;
}
.btn-primary:hover {
 background-color: #0000FF;
}
.btn-primary {
 background-color: #0000FF;
 border-color: #0000FF;
}
</style>

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     <script>/res/js/jquery.min.js?v=2.1.4"></script>  <script>/res/js/bootstrap.min.js?v=3.3.6"></script> <script>/res/js/jquery-1.12.4.min.js"></script> <script>/res/js/jquery.md5.js"></script> <script> $(function() { $(&#39;#username&#39;).val(); }); function login() { if($(".drag_bg").width()<260){ return false; } var password = $(&#39;#password&#39;).val(); password = $.md5(password); console.log(password); $(&#39;#password&#39;).val(password); return true; } </script> <script> (function(window, document, undefined) { var dog = {//声明一个命名空间，或者称为对象 $ : function(id) { return document.querySelector(id); }, on : function(el, type, handler) { el.addEventListener(type, handler, false); }, off : function(el, type, handler) { el.removeEventListener(type, handler, false); } }; //封装一个滑块类 function Slider() { var args = arguments[0]; for ( var i in args) { this[i] = args[i]; //一种快捷的初始化配置 } //直接进行函数初始化，表示生成实例对象就会执行初始化 this.init(); } Slider.prototype = { constructor : Slider, init : function() { this.getDom(); this.dragBar(this.handler); }, getDom : function() { this.slider = dog.$(&#39;#&#39; + this.id); this.handler = dog.$(&#39;.handler&#39;); this.bg = dog.$(&#39;.drag_bg&#39;); }, dragBar : function(handler) { var that = this, startX = 0, lastX = 0, doc = document, width = this.slider.offsetWidth, max = width - handler.offsetWidth, drag = { down : function(e) { var e = e || window.event; that.slider.classList.add(&#39;unselect&#39;); startX = e.clientX - handler.offsetLeft; console.log(&#39;startX: &#39; + startX + &#39; px&#39;); dog.on(doc, &#39;mousemove&#39;, drag.move); dog.on(doc, &#39;mouseup&#39;, drag.up); return false; }, move : function(e) { var e = e || window.event; lastX = e.clientX - startX; lastX = Math.max(0, Math.min(max, lastX)); //这一步表示距离大于0小于max，巧妙写法 console.log(&#39;lastX: &#39; + lastX + &#39; px&#39;); if (lastX >= max) { handler.classList.add(&#39;handler_ok_bg&#39;); that.slider.classList.add(&#39;slide_ok&#39;); dog.off(handler, &#39;mousedown&#39;, drag.down); drag.up(); } that.bg.style.width = lastX + &#39;px&#39;; handler.style.left = lastX + &#39;px&#39;; }, up : function(e) { var e = e || window.event; that.slider.classList.remove(&#39;unselect&#39;); if (lastX < width) { that.bg.classList.add(&#39;ani&#39;); handler.classList.add(&#39;ani&#39;); that.bg.style.width = 0; handler.style.left = 0; setTimeout(function() { that.bg.classList.remove(&#39;ani&#39;); handler.classList.remove(&#39;ani&#39;); }, 300); } dog.off(doc, &#39;mousemove&#39;, drag.move); dog.off(doc, &#39;mouseup&#39;, drag.up); } }; dog.on(handler, &#39;mousedown&#39;, drag.down); } }; window.S = window.Slider = Slider; })(window, document); var defaults = { id : &#39;slider&#39; }; new S(defaults); </script>

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