jquery Learning Essays (bubbling and Default behavior)

Source: Internet
Author: User

If more than one element is overlapped in the page, and the overlap is bound to the same event on those elements, then a bubbling problem occurs (these elements are within a div or a box model)

$ (' input '). Click (function () {    alert (' Input ');}) $ (' div '). Click (function () {    alert (' Input ');}) $ (' document '). Click (function () {    alert (' Input ');}) <  style= "Width:200px;height:200px;background: #ccc;" >    <  type= "Buttom"></div> three need to click on the time, click on the document back to pop up the document, click on the div will pop up Div, followed by pop-up document, click on input when pop-up input, follow-up Div, then document, This bubbling behavior, from the current element upward

Provides a way to block upward bubbling in jquery

$ (' input '). Click (function (e) {    e.stoppropagation ();  Disable bubbling    alert (' Input ');})

A blocking default behavior

$ (' a '). Click (function (e) {     e.preventdefault;
Alert (' Come on! }) You can prevent jumps after clicking the hyperlink, while preserving the effect of the hyperlink. After clicking, only the refueling will pop up.

You can block form submissions in a form

$ (' input '). Click (function (e) {    e.preventdefault;    Alert (' form submission '); A better approach is to block $ (' form ') on the form label. Submit (Function (e) {    e.preventdefault;})                            

Prevent bubbling while blocking the default behavior, shorthand direct return False

$ (' a '). Click (function (e) {   alert (' Refueling! ');   return false;        Blocking the bubbling behavior while prohibiting the default behavior})

Stopimmediatepropagation () and cancels subsequent event handlers for the event, that is, canceling the same event and no longer executing

jquery Learning Essays (bubbling and Default behavior)

Related Article

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.

A Free Trial That Lets You Build Big!

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

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

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

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