|
验证码提示功能在ui界面的登陆及提交窗口中起到了一定的有好作用,极大的提高了用户体验,本文带着这个美好的祝愿为您实现简单验证码提示,需要的朋友可以了解下
先看效果图: 要求:当输入框获得焦点时,自动显示验证图片。 代码如下(学习而已,仅供参考): 复制代码 代码如下: /***********************下是验证码对象*****************/ var Validation = {}; Validation.init = function(eleName,imageSrc){ this.image = imageSrc; $('#'+eleName).focusin(function(){ Validation.show(eleName); }); } Validation.image = ''; Validation.display=false; Validation.width = '100px'; Validation.height = '30px'; Validation.div = null; Validation.show = function(eleName){ if(this.display==false){ //首次显示 if(this.div==null){ $('#'+eleName).after('<div style="display:none;" id="div_validation_'+eleName+'" title="点击更换"></div>'); this.div = $('#div_validation_'+eleName); this.div.css('position','absolute'); this.div.css('cursor','pointer'); this.div.css('border','1px solid #CCC'); this.div.css('background-color','#FFF'); this.div.css('background-position','center'); this.div.css('background-repeat','no-repeat'); this.div.css('height',this.height); this.div.css('width',this.width); var objOffset = $('#'+eleName).offset(); objOffset.top+=$('#'+eleName).height()+6; this.div.offset(objOffset); this.div.css('background-image','url('+Validation.image+'&_t='+new Date()+')'); this.div.css('display','inline-block'); this.display = true; //点击更换 this.div.click(function(){ Validation.div.css('background-image','url('+Validation.image+'&_t='+new Date()+')'); }); } else{ this.div.css('background-image','url('+Validation.image+'&_t='+new Date()+')'); this.display = true; this.div.css('display','inline-block'); } } } Validation.hide =function(){ if(this.display==true){ this.display = false; this.div.hide(); } } 使用方式: 复制代码 代码如下: //验证码对象初始化 Validation.init('validation','Ajax.ashx?handle=validation'); // 输入框ID 验证图片地址 //隐藏 Validation.hide();
|
|