title: 自己写的验证码JQUERY插件

date: 2013-01-24 17:55

调用方式：

            label:'.yanzheng', //显示验证码的东西
            inputtext:'.yz',  //验证输入的input
 });

具体体码：

* Author: show  showshou@126.com
* DATE:2013.1.24
*/
(function($) {
$.fn.captchashow = function(options) {    
var opts = $.extend({}, $.fn.captchashow.defaults, options);
var code,tmp;
$form = $(this),
tmp = createCode();
$(opts.label).html(tmp);
$(opts.label).attr("ss",tmp);
this.find("input[type=submit]").attr('disabled','true');
$yz = $('#yz');
$yz[0].addEventListener('keyup', yzs, false);

function yzs(){
    if(this.value == $(opts.label).attr('ss')){
        opts.onSuccess();
    }else{
        $form.find("input[type=submit]").attr('disabled','true');
    }
}
}
$.fn.captchashow.defaults = {
    label:'.yanzheng',
    inputtext:'.yz',
    onSuccess: function() {
               // Enable the submit button:
               $form.find("input[type=submit]").removeAttr('disabled');
               return;
    }
}
function createCode(){ 
    code = new Array();
    var codeLength = 4;
    var selectChar = new Array(2,3,4,5,6,7,8,9,'A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','S','T','U','V','W','X','Y','Z');
    for(var i=0;i<codeLength;i++) {
       var charIndex = Math.floor(Math.random()*32);
       code +=selectChar[charIndex];
    }
    return code;
};
})(jQuery);