本文实例为大家分享了jQuery密码强度验证控件，供大家参考，具体内容如下
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript" src="jquery-1.12.1.js"></script>
<style type="text/css">
.mainPrompt {
border: #999 solid 1px;
border-radius: 13px;
overflow: hidden;
padding: 1px 2px;
display: inline-block;
height: 20px;
}
.listPrompt {
float: left;
height: 20px;
width: 56px;
margin-right: 2px;
}
.bot_text span {
width: 52px;
text-align: center;
display: inline-block;
line-height: 18px;
}
</style>
</head>
<body>
<br/>
<div>
<p id="PromptMessage" style="margin-left: 200px;">
新密码请至少使用字母、数字、符号两种<br/>类型组合的密码，长度为6~20位。</p>
<input type="text" id="txtPassword" style="float: left;"/ placeholder="请输入密码">
<div style="margin-left: 30px;font-size: 12px;float: left;">
<div class="mainPrompt" align="center" bgcolor="#f5f5f5">
<div class="listPrompt" id="strength_L" style="border-radius: 8px 0px 0px 8px;">
</div>
<div class="listPrompt" id="strength_M">
</div>
<div class="listPrompt" id="strength_H" style="margin-right: 0px;border-radius: 0 8px 8px 0;">
</div>
</div>
<div class="bot_text">
<span id="lowStrength">低</span> <span id="midStrength">
中</span> <span id="highStrength">高</span>
</div>
</div>
<div>
<script type="text/javascript">
function JudgyPwdLevel(pwdStr) {
var hasNumber = 0;
var hasLetter = 0;
var hasSymbol = 0
if (pwdStr.length >= 6) {
for (var i = 0; i < pwdStr.length; i++) {
var item = pwdStr[i];
if (item >= '0' && item <= '9') { hasNumber = 1; }
else if ((item >= 'a' && item <= "z") || (item >= 'A' && item < "Z")) { hasLetter = 1; }
else { hasSymbol = 1; }
}
}
return hasLetter + hasNumber + hasSymbol;
}
//显示颜色
function pwStrength(pwd) {
O_color = "#eeeeee";
L_color = "#FF0000";
M_color = "#FF9900";
H_color = "#33CC00";
if (pwd == null || pwd == '') {
Lcolor = Mcolor = Hcolor = O_color;
}
else {
S_level = JudgyPwdLevel(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;
}
}
document.getElementById("strength_L").style.background = Lcolor;
document.getElementById("strength_M").style.background = Mcolor;
document.getElementById("strength_H").style.background = Hcolor;
return;
}
$("#txtPassword").keyup(function(e){
pwStrength($(e.target).val());
});
</script>
</body>
</html>