Home > Developer > JavaScript

Attachevent events and AddEventListener events in JavaScript

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Copy from http://www.jb51.net/article/66111.htm

The examples in this article describe attachevent usage in JavaScript. Share to everyone for your reference. The specific analysis is as follows:

In general we add the event in JS, this is the

Obj.onclick=method

This way of binding events is compatible with mainstream browsers, but what if one element is added multiple times the same event?

?
123 obj.onclick=method1obj.onclick=method2obj.onclick=method3

If this is written, then only the last bound event, here is method3 will be executed, this time we can not use the onclick such writing, the protagonist changed the debut, in IE we can use the Attachevent method

?
123 btn1Obj.attachEvent("onclick",method1);btn1Obj.attachEvent("onclick",method2);btn1Obj.attachEvent("onclick",method3);

The use of the format is preceded by the event type, note that the need to add on, such as Onclick,onsubmit,onchange, the order of execution is

Method3->method2->method1

Unfortunately this Microsoft private method, Firefox and other browsers are not supported, fortunately they all support the standard AddEventListener method

?
123 btn1Obj.addEventListener("click",method1,false);btn1Obj.addEventListener("click",method2,false);btn1Obj.addEventListener("click",method3,false);

Execution order is method1->method2->method3

?
1234567891011121314151617181920212223242526272829303132333435 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">"http://www.w3.org/1999/xhtml"><title>attachEvent</title><script type="text/javascript">//第一种方式(微软的私人方法)function iniEvent() {  var btn = document.getElementById("btn");  btn.attachEvent("onclick", click1);  btn.attachEvent("onclick", click2);  btn.attachEvent("onclick", click3);}//第二种方式(火狐和其他浏览器)function iniEvent2() {  var btn = document.getElementById("btn");  btn.addEventListener("click", click1, false);  btn.addEventListener("click", click2, false);  btn.addEventListener("click", click3, false);}function click1() {  alert(‘click1‘);}function click2() {  alert(‘click2‘);}function click3() {  alert(‘click3‘);}</script><body onload="iniEvent()"><input type="button" id="btn" value="attachEvent" /></body>

Attachevent events and AddEventListener events in JavaScript

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
monitor javascript events chrome javascript keyboard events exit in events textbox events in jquery docker events msaa events watermark events

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More