JavaScript注冊時密碼強度校驗代碼

更新時間：2017年06月30日 09:13:53 作者：gina之編程花園

這篇文章主要為大家詳細介紹了JavaScript注冊時密碼強度校驗代碼，具有一定的參考價值，感興趣的小伙伴們可以參考一下

密碼強度有4個狀態(tài)，分別如下圖。

無密碼狀態(tài)

密碼低級狀態(tài)

密碼中級狀態(tài)

密碼高級狀態(tài)

實現(xiàn)的代碼主要如下：

HTML代碼

<input name="password" type="PassWord" onKeyUp="CheckIntensity(this.value)">
<table border="0" cellpadding="0" cellspacing="0">
<tr align="center">
<td id="pwd_Weak" class="pwd pwd_c"> </td>
<td id="pwd_Medium" class="pwd pwd_c pwd_f">無</td>
<td id="pwd_Strong" class="pwd pwd_c pwd_c_r"> </td>
</tr>
</table>

CSS代碼

.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代碼

function CheckIntensity(pwd) {
    var Mcolor, Wcolor, Scolor, Color_Html;    
    var m = 0;   
    //匹配數(shù)字
    if (/\d+/.test(pwd)) {
      debugger;
      m++;
    };
    //匹配字母
    if (/[A-Za-z]+/.test(pwd)) {     
      m++;
    };
    //匹配除數(shù)字字母外的特殊符號
    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 = "強";
        break;
      default:
        Wcolor = "pwd pwd_c";
        Mcolor = "pwd pwd_c pwd_f";
        Scolor = "pwd pwd_c pwd_c_r";
        Color_Html = "無";
        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;
  }

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