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Usage: 1, used to specify the function to run for each matching element, the syntax is "$(selector) .each (function (index,element))"; 2, used to traverse the specified object and array, the syntax is "$.each (the object or array that needs to be traversed, the function used for loop execution)".

The operating environment of this tutorial: windows10 system, jquery3.2.1 version, Dell G3 computer.

What is the use of each in jquery

1. The each () method specifies the function to run for each matching element.

Tip: returning false can be used to stop the loop early.

$(selector) .each (function (index,element))

Function (index,element) is required. Specifies the function to run for each matching element.

Examples are as follows:

$(document) .ready (function () {$("button") .click (function () {$("li") .each (function () {alert ($(this). Text ()});}); output the value CoffeeMilkSoda of each list item

Output result:

After clicking the button:

2. The jQuery.each () function is used to traverse the specified object and array.

Grammar

$.each (object, callback)

The object Object type specifies the object or array to traverse.

The function specified by the callback Function type for loop execution.

Examples are as follows:

(function () {$.each ([52,97], function (index, value) {alert (index +':'+ value);});})

Output result:

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