密码强度有4个状态，分别如下图。
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无密码状态
密码低级状态
密码中级状态
密码高级状态
实现的代码主要如下：
HTML代码
CSS代码
.pwd{width:50px;height:20px;line-height:14px;padding-top:2px;}
.pwd_f{color:#BBBBBB;}
.pwd_c{background-color:#F3F3F3;border-top:1px solid #D0D0D0;border-bottom:1px solid #D0D0D0;border-left:1px solid #D0D0D0;}
.pwd_Weak_c{background-color:#FF4545;border-top:1px solid #BB2B2B;border-bottom:1px solid #BB2B2B;border-left:1px solid #BB2B2B;}
.pwd_Medium_c{background-color:#FFD35E;border-top:1px solid #E9AE10;border-bottom:1px solid #E9AE10;border-left:1px solid #E9AE10;}
.pwd_Strong_c{background-color:#3ABB1C;border-top:1px solid #267A12;border-bottom:1px solid #267A12;border-left:1px solid #267A12;}
.pwd_c_r{border-right:1px solid #D0D0D0;}
.pwd_Weak_c_r{border-right:1px solid #BB2B2B;}
.pwd_Medium_c_r{border-right:1px solid #E9AE10;}
.pwd_Strong_c_r{border-right:1px solid #267A12;}
JS代码
function CheckIntensity(pwd) {
var Mcolor, Wcolor, Scolor, Color_Html;
var m = 0;
//匹配数字
if (/\d+/.test(pwd)) {
debugger;
m++;
};
//匹配字母
if (/[A-Za-z]+/.test(pwd)) {
m++;
};
//匹配除数字字母外的特殊符号
if (/[^0-9a-zA-Z]+/.test(pwd)) {
m++;
};
if (pwd.length <= 6) { m = 1; }
if (pwd.length <= 0) { m = 0; }
switch (m) {
case 1:
Wcolor = "pwd pwd_Weak_c";
Mcolor = "pwd pwd_c";
Scolor = "pwd pwd_c pwd_c_r";
Color_Html = "弱";
break;
case 2:
Wcolor = "pwd pwd_Medium_c";
Mcolor = "pwd pwd_Medium_c";
Scolor = "pwd pwd_c pwd_c_r";
Color_Html = "中";
break;
case 3:
Wcolor = "pwd pwd_Strong_c";
Mcolor = "pwd pwd_Strong_c";
Scolor = "pwd pwd_Strong_c pwd_Strong_c_r";
Color_Html = "强";
break;
default:
Wcolor = "pwd pwd_c";
Mcolor = "pwd pwd_c pwd_f";
Scolor = "pwd pwd_c pwd_c_r";
Color_Html = "无";
break;
}
document.getElementById('pwd_Weak').className = Wcolor;
document.getElementById('pwd_Medium').className = Mcolor;
document.getElementById('pwd_Strong').className = Scolor;
document.getElementById('pwd_Medium').innerHTML = Color_Html;
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持创新互联。
网站名称：JavaScript注册时密码强度校验代码
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