jQuery简易的密码等级

作者： JinYon
发布时间： 2017 年 02 月 28 日
1749次浏览
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分类： JQuery

运算复杂不过使用简单的密码等级，注释全一看就懂，直接粘贴复制就可使用

<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>密码强度</title>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<script type="text/javascript">
//显示颜色  
function pwStrength(pwd) {
	O_color = "#eeeeee";
	L_color = "#ffd8b4";
	M_color = "#ffaf56";
	H_color = "#e85959";
	if (pwd == null || pwd == "") {
		Lcolor = Mcolor = Hcolor = O_color;
	} else {
		S_level = checkStrong(pwd);
		switch (S_level) {
		case 0:
			Lcolor = Mcolor = Hcolor = O_color;
		case 1:
			Lcolor = L_color;
			Mcolor = Hcolor = O_color;
			break;
		case 2:
			Lcolor = L_color;
			Mcolor = M_color;
			Hcolor = O_color;
			break;
		default:
			Lcolor = L_color;
			Mcolor = M_color;
			Hcolor = H_color;
		}
	}
	$("#strength_L").css("background-color", Lcolor);
	$("#strength_M").css("background-color", Mcolor);
	$("#strength_H").css("background-color", Hcolor);
	return;
}

//判断输入密码的类型  
function CharMode(iN) {
	if (iN >= 48 && iN <= 57) //数字  
	return 1;
	if (iN >= 65 && iN <= 90) //大写  
	return 2;
	if (iN >= 97 && iN <= 122) //小写  
	return 4;
	else return 8;
}
//bitTotal函数  
//计算密码模式  
function bitTotal(num) {
	modes = 0;
	for (i = 0; i < 4; i++) {
		if (num & 1) modes++;
		num >>>= 1;
	}
	return modes;
}
//返回强度级别  
function checkStrong(sPW) {
	if (sPW.length <= 4) return 0; //密码太短  
	Modes = 0;
	for (i = 0; i < sPW.length; i++) {
		//密码模式  
		Modes |= CharMode(sPW.charCodeAt(i));
	}
	return bitTotal(Modes);
}

</script>
</head>
<body>
<style>
/*密码设置*/
ul.pass_set{ clear:both; margin-top:7px; height:18px; line-height:18px; overflow:hidden; width:156px; overflow:hidden;}
ul.pass_set li{ float: left; text-align: center; width: 50px; border-right: 2px solid #fff; background: #ffd8b4; color: #fff; list-style-type: none; }
/*提示*/
dl.code_note{ clear:both; width:75%; margin:0 auto; padding:30px 0 0 0;}
dl.code_note dt{ clear:both; font-size:14px; font-weight:bold; line-height:1.7em;}
dl.code_note dt p{ clear:both; font-weight:normal; padding-top:5px;}
dl.code_note dd{ clear:both; padding-top:15px;}
/*type=file 在ie78下的样式*/
.tfie{
	width:80px;
	height:25px;
	display:inline-block;
}
</style>
<div class="m"> 密码：
  <input type="password" onkeyup="pwStrength(this.value)">
  <ul class="pass_set">
    <li id="strength_L">弱</li>
    <li id="strength_M">中</li>
    <li id="strength_H">强</li>
  </ul>
</div>
</body>
</html>

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