What is jquery length

The jquery length property contains the number of elements in the jQuery object. Its usage is as follows: "$("button").click(function(){alert($("li").length);}); ".

The operating environment of this article: windows7 system, jquery3.2.1 version, DELL G3 computer

What is jquery length?

jQuery length property

The length property contains the number of elements in the jQuery object.

Grammar

$(selector).length

Example

Number of output

$("button").click(function(){ alert($("li").length); });