Detailed example of jQuery completing form validation function
This article mainly introduces the example code of jquery to complete form verification. The code is simple and easy to understand. Friends who need it can refer to it. I hope it can help everyone use jQuery to complete the form verification function.
Without further ado, I will post the code directly for you. The specific code is as follows:
##
<!doctype html>
<head>
<meta charset=utf-8" />
<title>表单验证</title>
<link href="css/style1.css" rel="external nofollow" rel="stylesheet" type="text/css" />
<!-- 引入jQuery -->
<script src="jquery/jquery.js" type="text/javascript"></script>
<script>
$(document).ready(function() {
$("form :input.required").each(function() {
var $required=$("<strong class=high>*</strong>");
$(this).parent().append($required);
});
$("form :input").blur(function() {
var $parent=$(this).parent();
$parent.find(".formtips").remove();
if($(this).is("#username")){
if(this.value==""||this.value.length<6){
var errorMsg='请输入至少六位的用户名';
$parent.append('<span class="formtips onError">'+errorMsg+'</span>');
}else{
var okMsg='输入正确';
$parent.append('<span class="formtips onSuccess">'+okMsg+'</span>');
return false;
}
}
if($(this).is("#email")){
if(this.value==""||(this.value!==""&&!/.+@.+\.[a-zA-Z]{2,4}$/.test(this.value))){
var errorMsg='请输入正确的E—mail地址';
$parent.append('<span class="formtips onError">'+errorMsg+'</span>');
}else{
var okMsg='输入正确';
$parent.append('<span class="formtips onSuccess">'+okMsg+'</span>');
}
}
});
$("#send").click(function() {
$("form .required:input").trigger('blur');
var numError=$("form .onError").length;
if(numError){
return false;
}
alert("注册成功，密码已发到你的邮箱，请查收。");
});
});
</script>
</head>
<body>
<form method="post" action="">
<p class="int">
<label for="username">用户名:</label>
<input type="text" id="username" class="required" />
</p>
<p class="int">
<label for="email">邮箱:</label>
<input type="text" id="email" class="required" />
</p>
<p class="int">
<label for="personinfo">个人资料:</label>
<input type="text" id="personinfo" />
</p>
<p class="sub">
<input type="submit" value="提交" id="send"/><input type="reset" id="res"/>
</p>
</form>
</body>
</html>
AngularJS implements form verification mobile phone number function
Detailed explanation of Angular implementing form verification function
WeChat applet form Complete example of verification function
The above is the detailed content of Detailed example of jQuery completing form validation function. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Detailed explanation of jQuery reference methods: Quick start guide
Feb 27, 2024 pm 06:45 PM
Detailed explanation of jQuery reference method: Quick start guide jQuery is a popular JavaScript library that is widely used in website development. It simplifies JavaScript programming and provides developers with rich functions and features. This article will introduce jQuery's reference method in detail and provide specific code examples to help readers get started quickly. Introducing jQuery First, we need to introduce the jQuery library into the HTML file. It can be introduced through a CDN link or downloaded
How to use PUT request method in jQuery?
Feb 28, 2024 pm 03:12 PM
How to use PUT request method in jQuery? In jQuery, the method of sending a PUT request is similar to sending other types of requests, but you need to pay attention to some details and parameter settings. PUT requests are typically used to update resources, such as updating data in a database or updating files on the server. The following is a specific code example using the PUT request method in jQuery. First, make sure you include the jQuery library file, then you can send a PUT request via: $.ajax({u
How to remove the height attribute of an element with jQuery?
Feb 28, 2024 am 08:39 AM
How to remove the height attribute of an element with jQuery? In front-end development, we often encounter the need to manipulate the height attributes of elements. Sometimes, we may need to dynamically change the height of an element, and sometimes we need to remove the height attribute of an element. This article will introduce how to use jQuery to remove the height attribute of an element and provide specific code examples. Before using jQuery to operate the height attribute, we first need to understand the height attribute in CSS. The height attribute is used to set the height of an element
jQuery Tips: Quickly modify the text of all a tags on the page
Feb 28, 2024 pm 09:06 PM
Title: jQuery Tips: Quickly modify the text of all a tags on the page In web development, we often need to modify and operate elements on the page. When using jQuery, sometimes you need to modify the text content of all a tags in the page at once, which can save time and energy. The following will introduce how to use jQuery to quickly modify the text of all a tags on the page, and give specific code examples. First, we need to introduce the jQuery library file and ensure that the following code is introduced into the page: <
Use jQuery to modify the text content of all a tags
Feb 28, 2024 pm 05:42 PM
Title: Use jQuery to modify the text content of all a tags. jQuery is a popular JavaScript library that is widely used to handle DOM operations. In web development, we often encounter the need to modify the text content of the link tag (a tag) on the page. This article will explain how to use jQuery to achieve this goal, and provide specific code examples. First, we need to introduce the jQuery library into the page. Add the following code in the HTML file:
Tips for using Laravel form classes: ways to improve efficiency
Mar 11, 2024 pm 12:51 PM
Forms are an integral part of writing a website or application. Laravel, as a popular PHP framework, provides rich and powerful form classes, making form processing easier and more efficient. This article will introduce some tips on using Laravel form classes to help you improve development efficiency. The following explains in detail through specific code examples. Creating a form To create a form in Laravel, you first need to write the corresponding HTML form in the view. When working with forms, you can use Laravel
Understand the role and application scenarios of eq in jQuery
Feb 28, 2024 pm 01:15 PM
jQuery is a popular JavaScript library that is widely used to handle DOM manipulation and event handling in web pages. In jQuery, the eq() method is used to select elements at a specified index position. The specific usage and application scenarios are as follows. In jQuery, the eq() method selects the element at a specified index position. Index positions start counting from 0, i.e. the index of the first element is 0, the index of the second element is 1, and so on. The syntax of the eq() method is as follows: $("s
How to tell if a jQuery element has a specific attribute?
Feb 29, 2024 am 09:03 AM
How to tell if a jQuery element has a specific attribute? When using jQuery to operate DOM elements, you often encounter situations where you need to determine whether an element has a specific attribute. In this case, we can easily implement this function with the help of the methods provided by jQuery. The following will introduce two commonly used methods to determine whether a jQuery element has specific attributes, and attach specific code examples. Method 1: Use the attr() method and typeof operator // to determine whether the element has a specific attribute
