javascript实现支付宝滑块验证码效果

 
 
 
 
 
 



 

 

 

 请按住滑块，拖动到最右边
 
 

 


 

#drag{
 position: relative;
 background-color: #e8e8e8;
 width: 300px;
 height: 34px;
 line-height: 34px;
 text-align: center;
}
#drag .handler{
 position: absolute;
 top: 0px;
 left: 0px;
 width: 40px;
 height: 32px;
 border: 1px solid #ccc;
 cursor: move;
}
.handler_bg{
 background: #fff url("../img/slider.png") no-repeat center;
}
.handler_ok_bg{
 background: #fff url("../img/complet.png") no-repeat center;
}
#drag .drag_bg{
 background-color: #7ac23c;
 height: 34px;
 width: 0px;
}
#drag .drag_text{
 position: absolute;
 top: 0px;
 width: 300px;
 color:#9c9c9c;
 -moz-user-select: none;
 -webkit-user-select: none;
 user-select: none;
 -o-user-select:none;
 -ms-user-select:none;

 font-size: 12px; // add
}

/**
 * Created by shuai_wy on 2017/3/14.
 */
$.fn.drag = function(options) {
 var x, drag = this, isMove = false, defaults = {
 };
 var optiOns= $.extend(defaults, options);
 var handler = drag.find('.handler');
 var drag_bg = drag.find('.drag_bg');
 var text = drag.find('.drag_text');
 var maxWidth = drag.width() - handler.width(); //能滑动的最大间距

 //鼠标按下时候的x轴的位置
 handler.mousedown(function(e) {
 isMove = true;
 x = e.pageX - parseInt(handler.css('left'), 10);
 });

 //鼠标指针在上下文移动时，移动距离大于0小于最大间距，滑块x轴位置等于鼠标移动距离
 $(document).mousemove(function(e) {
 var _x = e.pageX - x;// _x = e.pageX - (e.pageX - parseInt(handler.css('left'), 10)) = x
 if (isMove) {
 if (_x > 0 && _x <= maxWidth) {
 handler.css({'left': _x});
 drag_bg.css({'width': _x});
 } else if (_x > maxWidth) { //鼠标指针移动距离达到最大时清空事件
 dragOk();
 }
 }
 }).mouseup(function(e) {
 isMove = false;
 var _x = e.pageX - x;
 if (_x