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JS基于正则表达式实现的密码强度验证功能示例

ITzhongzi 人气:0

本文实例讲述了JS基于正则表达式实现的密码强度验证功能。分享给大家供大家参考,具体如下:

先来看看运行效果:

具体代码如下:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>www.qb5200.com </title>
</head>
<style type="text/css">
  body {
    background: #ccc;
  }
  label {
    width: 40px;
    display: inline-block;
  }
  span {
    color: red;
  }
  .container {
    margin: 100px auto;
    width: 400px;
    padding: 50px;
    line-height: 40px;
    border: 1px solid #999;
    background: #efefef;
  }
  span {
    margin-left: 30px;
    font-size: 12px;
  }
  .wrong {
    color: red
  }
  .right {
    color: green;
  }
  .strengthLv0 {
    height: 6px;
    width: 120px;
    border: 1px solid #ccc;
    padding: 2px;
  }
  .strengthLv1 {
    background: red;
    height: 6px;
    width: 40px;
    border: 1px solid #ccc;
    padding: 2px;
  }
  .strengthLv2 {
    background: orange;
    height: 6px;
    width: 80px;
    border: 1px solid #ccc;
    padding: 2px;
  }
  .strengthLv3 {
    background: green;
    height: 6px;
    width: 120px;
    border: 1px solid #ccc;
    padding: 2px;
  }
</style>
<body>
<div class="container">
  <label>密码</label>
  <input type="text" id="inp1" maxlength="16">
  <!--<input type="password" id="inp1" maxlength="16"/>-->
  <div class="pass-wrap">
    <em>密码强度:</em>
    <em id="strength"></em>
    <div id="strengthLevel" class="strengthLv0"></div>
  </div>
</div>
<script>
  var regEx = /^[1-9]\d{4,9}$/; //匹配qq号
  //找人
  var inp1 = document.getElementById("inp1");
  var strength = document.getElementById("strength");
  var strengthLevel = document.getElementById("strengthLevel");
  var arr = ["", "低", "中", "高"];
  inp1.onkeyup = function () {
    var level = 0;
    if (/[1-9]/.test(this.value)) {
      level++;
    }
    if (/[a-z]/.test(this.value)) {
      level++;
    }
    if (/[^a-z1-9]/.test(this.value)) {
      level++
    }
    if (this.value.length < 6) {
      level = 0;
    }
    strength.innerHTML = arr[level];
    strengthLevel.className = "strengthLv" + level;
  };
  /* inp1.onkeyup = function () {
   var level = 0;
   if (/[1-9]/.test(this.value)) {
   level++;
   }
   if (/[a-z]/.test(this.value)) {
   level++
   }
   if (/[^a-z0-9]/.test(this.value)) {
   level++
   }
   if (inp1.value.length < 6) {
   level = 0;
   }
   strengthLevel.className = "strengthLv"+level;
   strength.innerHTML = arr[level];
   };*/
</script>
</body>
</html>

PS:这里再为大家提供几款相关在线工具供大家参考使用:

密码安全性在线检测:
http://tools.softyun.net/password/my_password_safe

在线随机数字/字符串生成工具:
http://tools.softyun.net/aideddesign/suijishu

高强度密码生成器:
http://tools.softyun.net/password/CreateStrongPassword

JavaScript正则表达式在线测试工具:
http://tools.softyun.net/regex/javascript

正则表达式在线生成工具:
http://tools.softyun.net/regex/create_reg

希望本文所述对大家JavaScript程序设计有所帮助。

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