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This article will explain in detail whether there is a size method in jquery. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.

There is a size () method before jquery 1.8, and there is no size () method in version 1.8 and later. The size () method, which returns the number of elements matched by the jQuery selector, is deprecated in jQuery version 1.8 and can be replaced with the length attribute.

The operating environment of this tutorial: windows7 system, jquery3.6.0 version, Dell G3 computer.

The size () method returns the number of elements that are matched by the jQuery selector.

Lower versions of jquery (prior to jquery 1.8) have size methods, while higher versions of jquery do not have size methods.

The size () method is deprecated in jQuery version 1.8. Use the length property instead.

$(document) .ready (function () {$("button") .click (function () {alert ($("li"). Size ();});}) Output the number of li elements Coffee Milk Soda

A higher version of jquery, which cannot use the size () method, will report an error.

Difference between jQuery length and size ()

Size () is a function provided by jQuery, while length is an attribute (without parentheses).

Size () is a method to manipulate an object instance, defined in jQuery and can only be used under jQuery; length is an attribute, defined in dom and javascript, and can be used without jQuery.

For tag object elements, such as counting how many paragraph elements a html page has

, then $("p") .size () = = $("p") .length at this time

If you calculate the length of a string or the number of elements in an array, you can only use length instead of size ()

Description:

The .size () method does not accept any parameters.

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