How to verify that an element exists in a collection of jquery objects

This article is about how to verify that an element exists in a collection of jquery objects. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Verify that the element exists in the collection of jquery objects

$(document) .ready (function () {if ($('# id') .length) {/ / do something}}) Jquery is what jquery is a simple and fast JavaScript library, it has a unique chain syntax and short and clear multi-function interface, efficient and flexible css selector, and can be extended to CSS selector, with convenient plug-in extension mechanism and rich plug-ins, after Prototype is another excellent JavaScript code base, can be used to simplify event processing, HTML document traversal, Ajax interaction and animation, in order to quickly develop the website.

Thank you for reading! On "how to verify whether the element exists in the jquery object collection" this article shares here, I hope the above content can be of some help to you, so that you can learn more knowledge, if you think the article is good, you can share it out for more people to see it!