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935090232@qq.com

2020-12-01 611146e69aaa62296cf84f2ccb5aca5ebba17677

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