JavaScript注册时密码强度校验代码

密码强度有4个状态，分别如下图。

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

rush:xhtml;">

CSS代码

rush:css;"> .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_h3_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_h3_c_r{border-right:1px solid #267A12;}

JS代码

rush:js;"> 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_h3_c";
    Mcolor = "pwd pwd_h3_c";
    Scolor = "pwd pwd_h3_c pwd_h3_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_h3').className = Scolor;
document.getElementById('pwd_Medium').innerHTML = Color_Html;

}

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