Tips on using DOM event binding in js
This time I will bring you tips on how to use DOM event binding in js. What are the precautions when using DOM event binding in js? Here are practical cases, let’s take a look.
js event binding
JavaScript has three event models:
Inline model
Script model
DOM2 model
##1. Inline model
//基本废除不用 <input type="button" value="按钮" onclick="alert('Lee');" /> <input type="button" value="按钮" onclick="box();" />
2. Script model
//基本不用
var input = document.getElementsByTagName('input')[0]; //得到 input 对象
input.onclick = function () { //匿名函数执行
alert('Lee');
};
事件处理函数 影响的元素 何时发生
onabort 图像 当图像加载被中断时
onblur 窗口、框架、所有表单对象 当焦点从对象上移开时
onchange 输入框，选择框和文本区域 当改变一个元素的值且失去焦点时
onclick 链接、按钮、表单对象、图像映射区域 当用户单击对象时
ondblclick 链接、按钮、表单对象 当用户双击对象时
ondragdrop 窗口 当用户将一个对象拖放到浏览器窗口时
onError 脚本 当脚本中发生语法错误时
onfocus 窗口、框架、所有表单对象 当单击鼠标或者将鼠标移动聚焦到窗口或框架时
onkeydown 文档、图像、链接、表单 当按键被按下时
onkeypress 文档、图像、链接、表单 当按键被按下然后松开时
onkeyup 文档、图像、链接、表单 当按键被松开时
onload 主题、框架集、图像 文档或图像加载后
onunload 主体、框架集 文档或框架集卸载后
onmouseout 链接 当图标移除链接时
onmouseover 链接 当鼠标移到链接时
onmove 窗口 当浏览器窗口移动时
onreset 表单复位按钮 单击表单的 reset 按钮
onresize 窗口 当选择一个表单对象时
onselect 表单元素 当选择一个表单对象时
onsubmit 表单 当发送表格到服务器时3. Inline model
"DOM2-level events" defines two methods for adding events And operations to remove event handlers:addEventListener() and removeEventListener(). These two methods are included in all DOM nodes, and they both accept 3 parameters; event name, function, bubbling or captured Boolean value (true means capturing, false means bubbling)
window.addEventListener('load', function () {
alert('Lee');
}, false);
window.removeEventListener('load', function () {
alert('Mr.Lee');
}, false) the same parameters: event name and function.
1. IE 不支持捕获，只支持冒泡；
2. IE 添加事件不能屏蔽重复的函数；
3. IE 中的 this 指向的是 window 而不是 DOM 对象。
4. 在传统事件上，IE 是无法接受到 event 对象的，但使用了 attchEvent()却可以，但有些区别。
"javascript
window.attachEvent('load', function () {
alert('Lee');
}, false);
window.detachEvent('load', function () {
alert('Mr.Lee');
}, false)
"I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website! Recommended reading:
Angular CLI generates Angular 5 project usage detailed explanation
The above is the detailed content of Tips on using DOM event binding in js. 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
What software is crystaldiskmark? -How to use crystaldiskmark?
Mar 18, 2024 pm 02:58 PM
CrystalDiskMark is a small HDD benchmark tool for hard drives that quickly measures sequential and random read/write speeds. Next, let the editor introduce CrystalDiskMark to you and how to use crystaldiskmark~ 1. Introduction to CrystalDiskMark CrystalDiskMark is a widely used disk performance testing tool used to evaluate the read and write speed and performance of mechanical hard drives and solid-state drives (SSD). Random I/O performance. It is a free Windows application and provides a user-friendly interface and various test modes to evaluate different aspects of hard drive performance and is widely used in hardware reviews
How to use Baidu Netdisk app
Mar 27, 2024 pm 06:46 PM
Cloud storage has become an indispensable part of our daily life and work nowadays. As one of the leading cloud storage services in China, Baidu Netdisk has won the favor of a large number of users with its powerful storage functions, efficient transmission speed and convenient operation experience. And whether you want to back up important files, share information, watch videos online, or listen to music, Baidu Cloud Disk can meet your needs. However, many users may not understand the specific use method of Baidu Netdisk app, so this tutorial will introduce in detail how to use Baidu Netdisk app. Users who are still confused can follow this article to learn more. ! How to use Baidu Cloud Network Disk: 1. Installation First, when downloading and installing Baidu Cloud software, please select the custom installation option.
How to use NetEase Mailbox Master
Mar 27, 2024 pm 05:32 PM
NetEase Mailbox, as an email address widely used by Chinese netizens, has always won the trust of users with its stable and efficient services. NetEase Mailbox Master is an email software specially created for mobile phone users. It greatly simplifies the process of sending and receiving emails and makes our email processing more convenient. So how to use NetEase Mailbox Master, and what specific functions it has. Below, the editor of this site will give you a detailed introduction, hoping to help you! First, you can search and download the NetEase Mailbox Master app in the mobile app store. Search for "NetEase Mailbox Master" in App Store or Baidu Mobile Assistant, and then follow the prompts to install it. After the download and installation is completed, we open the NetEase email account and log in. The login interface is as shown below
BTCC tutorial: How to bind and use MetaMask wallet on BTCC exchange?
Apr 26, 2024 am 09:40 AM
MetaMask (also called Little Fox Wallet in Chinese) is a free and well-received encryption wallet software. Currently, BTCC supports binding to the MetaMask wallet. After binding, you can use the MetaMask wallet to quickly log in, store value, buy coins, etc., and you can also get 20 USDT trial bonus for the first time binding. In the BTCCMetaMask wallet tutorial, we will introduce in detail how to register and use MetaMask, and how to bind and use the Little Fox wallet in BTCC. What is MetaMask wallet? With over 30 million users, MetaMask Little Fox Wallet is one of the most popular cryptocurrency wallets today. It is free to use and can be installed on the network as an extension
Win11 Tips Sharing: Skip Microsoft Account Login with One Trick
Mar 27, 2024 pm 02:57 PM
Win11 Tips Sharing: One trick to skip Microsoft account login Windows 11 is the latest operating system launched by Microsoft, with a new design style and many practical functions. However, for some users, having to log in to their Microsoft account every time they boot up the system can be a bit annoying. If you are one of them, you might as well try the following tips, which will allow you to skip logging in with a Microsoft account and enter the desktop interface directly. First, we need to create a local account in the system to log in instead of a Microsoft account. The advantage of doing this is
How to use Xiaomi Auto app
Apr 01, 2024 pm 09:19 PM
Xiaomi car software provides remote car control functions, allowing users to remotely control the vehicle through mobile phones or computers, such as opening and closing the vehicle's doors and windows, starting the engine, controlling the vehicle's air conditioner and audio, etc. The following is the use and content of this software, let's learn about it together . Comprehensive list of Xiaomi Auto app functions and usage methods 1. The Xiaomi Auto app was launched on the Apple AppStore on March 25, and can now be downloaded from the app store on Android phones; Car purchase: Learn about the core highlights and technical parameters of Xiaomi Auto, and make an appointment for a test drive. Configure and order your Xiaomi car, and support online processing of car pickup to-do items. 3. Community: Understand Xiaomi Auto brand information, exchange car experience, and share wonderful car life; 4. Car control: The mobile phone is the remote control, remote control, real-time security, easy
A must-have for veterans: Tips and precautions for * and & in C language
Apr 04, 2024 am 08:21 AM
In C language, it represents a pointer, which stores the address of other variables; & represents the address operator, which returns the memory address of a variable. Tips for using pointers include defining pointers, dereferencing pointers, and ensuring that pointers point to valid addresses; tips for using address operators & include obtaining variable addresses, and returning the address of the first element of the array when obtaining the address of an array element. A practical example demonstrating the use of pointer and address operators to reverse a string.
What are the tips for novices to create forms?
Mar 21, 2024 am 09:11 AM
We often create and edit tables in excel, but as a novice who has just come into contact with the software, how to use excel to create tables is not as easy as it is for us. Below, we will conduct some drills on some steps of table creation that novices, that is, beginners, need to master. We hope it will be helpful to those in need. A sample form for beginners is shown below: Let’s see how to complete it! 1. There are two methods to create a new excel document. You can right-click the mouse on a blank location on the [Desktop] - [New] - [xls] file. You can also [Start]-[All Programs]-[Microsoft Office]-[Microsoft Excel 20**] 2. Double-click our new ex
