所以我试图创建支票，这样如果有人没有正确输入邮政编码，电话号码或电子邮件地址，那么javascript会显示提醒，表单不会成为提交。如果没有填写任何字段（null || ==＆＃34;＆＃34;），那么javascript也会显示警告并且不会提交表单。
工作得很好，但突然停止了工作......我现在已经看了一段时间，但无法找出原因。
这是我的代码（.php）：
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Adding Companies</title>
<link rel="stylesheet" type="text/css" href="../ResponsiveTopNavDropdown.css" />
<meta name="viewport" content="width=device-width">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script>
<script src="toggleNav.js" type="text/javascript"></script>
</head>
<body>
<div class="container">
<div class="header"></div>
<div id="toggleNav"><a href="#" onclick="toggleNav()">Show/Hide Navigation</a></div>
<nav id="nav">
<?php include('../nav.html'); ?>
</nav>
<h1 id="mainheader">WELCOME TO MISSISSIPPI VALLEY CHAPTER 123</h1>
<section class="content-wide">
<?php
session_start();
if ($_SESSION['check'] != "true") {
header('Location: http://www.mississippivalleyashrae.org/Admin/admin_login.php');
}
$_SESSION['my_company'] = null;
?>
<h3><strong>You're currently in the process of: Adding a Company<strong></h3>
<table width = "760" border = "0" align = "center" cellpadding="0" cellspacing="1" bgcolor = "#cccccc">
<tr>
<form onSubmit="return validateCompany()" action="adding_manufacturer.php" method="post">
<td>
<table width="100%" border="0" cellpadding="5" cellspacing="0" bgcolor="#EEEEEE">
<tr>
<td colspan="3"><strong> Enter the Information for this New Company </strong></td>
</tr>
<tr>
<td colspan="3" align = "left">
Company Name<br />
<input type="text" name="company_name" id="company_name" placeholder="My Company .Inc"
size="100" maxlength="125"></td>
</tr>
<tr>
<td colspan="3" align = "left">
Address<br />
<input type="text" name="address" id="address" placeholder="1234 My Street Ave."
size="100" maxlength="100"></td>
</tr>
<tr>
<td align = "left" width="250">
City<br />
<input type="text" name="city" id="city" placeholder="Rock Island" size="30" maxlength="30"></td>
<td align = "left" width="250">
State<br />
<select name="state">
<option value="AL">Alabama</option>
<option value="AK">Alaska</option>
<option value="AZ">Arizona</option>
<option value="AR">Arkansas</option>
<option value="CA">California</option>
<option value="CO">Colorado</option>
<option value="CT">Connecticut</option>
<option value="DE">Delaware</option>
<option value="DC">District Of Columbia</option>
<option value="FL">Florida</option>
<option value="GA">Georgia</option>
<option value="HI">Hawaii</option>
<option value="ID">Idaho</option>
<option value="IL">Illinois</option>
<option value="IN">Indiana</option>
<option value="IA">Iowa</option>
<option value="KS">Kansas</option>
<option value="KY">Kentucky</option>
<option value="LA">Louisiana</option>
<option value="ME">Maine</option>
<option value="MD">Maryland</option>
<option value="MA">Massachusetts</option>
<option value="MI">Michigan</option>
<option value="MN">Minnesota</option>
<option value="MS">Mississippi</option>
<option value="MO">Missouri</option>
<option value="MT">Montana</option>
<option value="NE">Nebraska</option>
<option value="NV">Nevada</option>
<option value="NH">New Hampshire</option>
<option value="NJ">New Jersey</option>
<option value="NM">New Mexico</option>
<option value="NY">New York</option>
<option value="NC">North Carolina</option>
<option value="ND">North Dakota</option>
<option value="OH">Ohio</option>
<option value="OK">Oklahoma</option>
<option value="OR">Oregon</option>
<option value="PA">Pennsylvania</option>
<option value="RI">Rhode Island</option>
<option value="SC">South Carolina</option>
<option value="SD">South Dakota</option>
<option value="TN">Tennessee</option>
<option value="TX">Texas</option>
<option value="UT">Utah</option>
<option value="VT">Vermont</option>
<option value="VA">Virginia</option>
<option value="WA">Washington</option>
<option value="WV">West Virginia</option>
<option value="WI">Wisconsin</option>
<option value="WY">Wyoming</option>
</select></td>
<td align = "left" width="250">
Zip-Code<br />
<input type="text" name="zip" id="zip" placeholder="61201" size="6" maxlength="6"></td>
</tr>
<tr>
<td align = "left" width="250">
Phone<br />
<input type="text" name="phone" id="phone" placeholder="515-555-0000" size="12" maxlength="12"></td>
<td colspan="2" align = "left" width="250">
Email Address<br />
<input type="text" name="email" id="email" placeholder="myemail24@gmail.com"
size="50" maxlength="50"></td>
</tr>
<tr>
<td colspan="3">
<br />
<input type ="submit" name="submit" id="mySubmit" value="Add This Company"></td>
</tr>
</table>
</td>
</form>
</tr>
</table>
<p>
**Make sure all information is entered correctly!<br />
If you enter any information incorrectly you can go back and edit it from the
<a href="http://www.mississippivalleyashrae.org/Admin/admin_main.php">Admin Main</a> page!
</p>
<script src="formValidators.js" type="text/javascript"></script>
</section>
这是我的javascript（formValidators.js）：
function validateCompany() {
var checkCompanyName = document.getElementById("company_name").value;
var checkAddress = document.getElementById("address").value;
var checkCity = document.getElementById("city").value;
var checkState = document.getElementById("state").value;
var checkZip = document.getElementById("zip").value;
var checkPhone = document.getElementById("phone").value;
var checkEmail = document.getElementById("email").value;
// checks for any null fields
if ((checkCompanyName==null || checkCompanyName=="") || (checkAddress==null || checkAddress=="") ||
(checkCity==null || checkCity=="") || (checkState==null || checkState=="") ||
(checkZip==null || checkZip=="")|| (checkPhone==null || checkPhone=="") ||
(checkEmail==null || checkEmail=="")){
alert("Please Fill All Fields");
return false;
}
var zipPattern = /^\\d{5}(-\\d{4})?$/;
if (zipPattern.test(checkZip) == false){
alert("Invalid Zip-Code, Please Re-Enter the zip-code in the correct format");
return false;
}
var phonePattern = /^()?\d{3}()?(-|\s)?\d{3}(-|\s)\d{4}$/;
if (phonePattern.test(checkPhone) == false){
alert("Invalid Phone Number, Please Re-Enter the phone number in the correct format");
return false;
}
var emailPattern = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
if (emailPattern.test(checkEmail) == false){
alert("Invalid Email, Please Re-Enter the email in the correct format");
return false;
}
}
答案 0 :(得分：0)
看起来问题出现在你的状态下拉：
<select name="state">
没有ID可以获取，所以你的JS失败了，我可以默默地添加。
<select name="state" id="state">
我修改了选择器以包含一个ID，现在它正在正常启动。