jQuery点击输入框显示验证码图片_jquery
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2022-04-22 16:48:45
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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):
/***********************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(''); 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:
//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();
以上就是本文的全部内容,希望对大家的学习有所帮助。
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