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

elements:

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

Recommended learning: "jquery video tutorial 》

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