验证表单在注册期间不起作用

Validation form is not working during signup

本文关键字：不起作用 注册 表单 验证      更新时间：2023-09-26

我创建了一个html SignUp页面，并在javascript中进行验证。这是验证码。

注册.html

<script type="text/javascript">

function validateForm() { 
var id = document.signup.LoginId;
var password = document.signup.LoginPassword;
var cpassword = document.signup.ConfirmPassword;
var city = document.signup.City;
var state = document.signup.State;
var number = document.signup.PhoneNumber;
var email = document.signup.Email;
var address = document.signup.Address;
var zipcode = document.signup.ZipCode;
if(id.value == "") {
    window.alert("Error: Username should be filled out.");
    id.focus();
    return false;
}
re = /^'w+$/;
if(!re.test(id.value)) {
    window.alert ("Error: Username must contain only letters, numbers and underscores.");
    id.focus();
    return false;
}
if(id.length < 6) {
    window.alert("Error: Username must contain at least 6 charecters.");
    id.focus();
    return false;
}
if(id.length > 12) {
    window.alert("Error: Username must not be greater than 12 charecters.");
    id.focus();
    return false;
}
if(password.value != "" && password.value == cpasswotd.value) {
    if(password.length < 6) {
        window.alert("Error: Password must contain at least 6 charecters.");
        password.focus();
        return false;
    }
    if(password.length > 12) {
        window.alert("Error: Password must not be greater than 12 charecters.");
        password.focus();
        return false;
    }
    if(password.value == id.value) {
        window.alert("Error: Password must be different from UserName.");
        password.focus();
        return false;
    }
    re = /[0-9]/;
    if(!re.test(password.value)) {
        window.alert("Error: Password must contain at least one number.");
        password.focus();
        return false;
    }
    re = /[a-z]/;
    if(!re.test(password.value)) {
        window.alert("Error: Password must contain at least one lowercase letter (a-z).");
        password.focus();
        return false;
    }
    re = /[A-Z]/;
    if(!re.test(password.value)) {
        window.alert("Error: Password must contain at least one uppercase letters (A-Z).");
        password.focus();
        return false;
    }
}else {
    window.alert("Error: Please check that you've entered and Confirmed your Password.");
    password.focus();
    return false;
}
window.alert("You have entered a valid password: "+password.value);
return true;

if(city.value == "") {
    window.alert("City must not be null.");
    city.focus();
    return false;
}
if(state.value == "") {
    window.alert("State must not be null.");
    state.focus();
    return false;
}
if(number.value == "") {
    window.alert("Phone number must not be null.");
    number.focus();
    return false;
}
if(number.length != 10) {
    window.alert("Phone number must be 10 digits.");
    number.focus();
    return false;
}
if (email.value == "")
{
    window.alert("Please enter a valid e-mail address.");
    email.focus();
    return false;
}
if (email.value.indexOf("@", 0) < 0)
{
    window.alert("Please enter a valid e-mail address.");
    email.focus();
    return false;
}
if (email.value.indexOf(".", 0) < 0)
{
    window.alert("Please enter a valid e-mail address.");
    email.focus();
    return false;
}
re = /^'w+$/
if(!re.test(address.value)) {
    window.alert("Error: Address must contain only letters, numbers and underscores.");
    address.focus();
    return false;
}
if(zipcode.value == "") {
    window.alert("Error: Zipcode must not be null.");
    zipcode.focus();
    return false;
}
if(zipcode.length > 6) {
    window.alert("Error: zipcode must not less than 6 digits.");
    zipcode.focus();
    return false;
}

}>

当我尝试输入错误的电子邮件地址（如"sapan@2"或"sapan"）时，它不会显示任何错误消息，而是保存到数据库中。

任何人都可以帮我解决这个问题。

谢谢。

我创建了一个简单的测试注册表单，并使用jQuery附加了验证处理程序。您可以根据需要修改此测试处理程序。

将以下代码放入注册.html：

<!DOCTYPE html>
<html lang="en">
  <head>
    <script type="text/javascript" src="jquery.min.js"></script>
  </head>
  <body>
    <form id="myForm" name="myForm" action="" method="post">
      Username: <input type="text" id="username" value="" />
      <input type="submit" name="submit" />
    </form>
    <script type="text/javascript">
        $( "#myForm" ).submit(function( event ) {
          if ( $( "input#username" ).val() != "" ) {
            alert('Logging you in!');
            return;
          }
          alert( "Please enter the username!" );
          event.preventDefault();         
        });
    </script>
  </body>
</html>

为此，您需要将 jquery.min.js 放在与 html 文件相同的文件夹中。

有几件事可能是错误的。

首先，如果您从"type="submit"的"input"控件调用"validateForm"函数，请将其更改为"type="button"。

其次，在"验证表单"函数的末尾，添加以下行...

document.getElementById("yourformidhere").submit();

这将在单击按钮时阻止表单提交，并且仅在所有元素值通过验证后提交表单，这是您实际想要完成的。

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