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JavaScript表单验证的两种实现方法

本文实例为大家分享了js表单验证的实现方法,供大家参考,具体内容如下

第一种:js表单验证

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>注册-个人用户</title>
  <meta http-equiv="pragma" content="no-cache">
  <meta http-equiv="cache-control" content="no-cache">
  <meta http-equiv="expires" content="0">
  <script src="/UploadFiles/2021-04-02/jquery.js">

第二种:

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title></title>
    <style>
      * {
        padding: 0;
        margin: 0;
      }

      form {
        width: 570px;
        height: 300px;
        margin: 100px auto;
      }

      label {
        width: 64px;
        float: left;
        clear: left;
        height: 36px;
        line-height: 36px;
        margin-top: 10px;
      }

      input {
        width: 300px;
        height: 36px;
        line-height: 36px;
        margin-top: 10px;
        text-indent: 8px;
        font-size: 16px;
        font-family: "微软雅黑";
        border: 1px solid #ccc;
        float: left;
      }

      #sub {
        width: 302px;
        height: 40px;
        border: 1px solid #ccc;
        background: #888;
        color: #fff;
        font-size: 18px;
        text-indent: 0;
      }

      .spa {
        height: 36px;
        line-height: 36px;
        width: 204px;
        display: inline-block;
        float: left;
        font-size: 12px;
        color: #BD362F;
        text-indent: 10px;
        margin-top: 10px;
      }
    </style>
  </head>

  <body>
    <form action="" method="post">
      <label id="name">姓&nbsp;名:</label><input type="text" name="username" id="username" value="" placeholder="请输入姓名" /><span class="spa spa1"></span><br />
      <label id="phone">手机号:</label><input type="text" name="userphone" id="userphone" value="" placeholder="请输入手机号" /><span class="spa spa2"></span><br />
      <label id="address">地&nbsp;址:</label><input type="text" name="useraddress" id="useraddress" value="" placeholder="请输入地址" /><span class="spa spa3"></span><br />
      <label>&nbsp;&nbsp;&nbsp;&nbsp;</label><input type="submit" value="注册" id="sub" />
    </form>
    <script src="/UploadFiles/2021-04-02/jquery-1.4.1.js">

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。