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85 lines
2.2 KiB
85 lines
2.2 KiB
(function($){
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$.fn.passwordStrength=function(settings){
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settings=$.extend({},$.fn.passwordStrength.defaults,settings);
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this.each(function(){
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var $this=$(this),
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scores = 0,
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checkingerror=false,
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pstrength=$(this).parents("form").find(".passwordStrength");
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$this.bind("keyup blur",function(){
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scores = $.fn.passwordStrength.ratepasswd($this.val(),settings);
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scores>=0 && checkingerror==false && (checkingerror=true);
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pstrength.find("span").removeClass("bgStrength");
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if(scores < 35 && scores >=0){
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pstrength.find("span:first").addClass("bgStrength");
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}else if(scores < 60 && scores >=35){
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pstrength.find("span:lt(2)").addClass("bgStrength");
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}else if(scores >= 60){
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pstrength.find("span:lt(3)").addClass("bgStrength");
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}
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if(checkingerror && ($this.val().length<settings.minLen || $this.val().length>settings.maxLen) ){
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settings.showmsg($this,$this.attr("errormsg"),3);
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}else if(checkingerror){
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settings.showmsg($this,"",2);
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}
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settings.trigger($this,!(scores>=0));
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});
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});
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}
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$.fn.passwordStrength.ratepasswd=function(passwd,config){
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//判断密码强度
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var len = passwd.length, scores;
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if(len >= config.minLen && len <= config.maxLen){
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scores = $.fn.passwordStrength.checkStrong(passwd);
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}else{
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scores = -1;
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}
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return scores/4*100;
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}
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//密码强度;
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$.fn.passwordStrength.checkStrong=function(content){
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var modes = 0, len = content.length;
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for(var i = 0;i < len; i++){
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modes |= $.fn.passwordStrength.charMode(content.charCodeAt(i));
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}
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return $.fn.passwordStrength.bitTotal(modes);
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}
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//字符类型;
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$.fn.passwordStrength.charMode=function(content){
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if(content >= 48 && content <= 57){ // 0-9
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return 1;
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}else if(content >= 65 && content <= 90){ // A-Z
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return 2;
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}else if(content >= 97 && content <= 122){ // a-z
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return 4;
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}else{ // 其它
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return 8;
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}
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}
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//计算出当前密码当中一共有多少种模式;
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$.fn.passwordStrength.bitTotal=function(num){
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var modes = 0;
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for(var i = 0;i < 4;i++){
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if(num & 1){modes++;}
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num >>>= 1;
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}
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return modes;
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}
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$.fn.passwordStrength.defaults={
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minLen:0,
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maxLen:30,
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trigger:$.noop
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}
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})(jQuery); |