How to use the inArray() method in JavaScript

The inArray method can check the contents of the array element to check whether it matches a specific value. In this article, we will introduce in detail the use of the inArray() method in How to use the inArray() method in JavaScript.

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How to use the inArray method?

First let us take a look at the basic syntax of the inArray method

$.inArray( 要搜索的值, 要搜素的数组, 索引编号(可省略) )

Specify the "value to search" in the first parameter, and set the "value to search" in the second parameter "Array" is the most basic.

This allows you to check whether the value you want to search for is stored in the array element.

In addition, by specifying the "index number" of the third parameter, you can specify which array element the search starts from.

How to search array elements

To check a stored array element for any value of a string, you can write it as follows:

var array = ['哈密瓜', '苹果', '草莓', '菠萝蜜'];
var result = $.inArray('草莓', array);
console.log(result);

The execution result is: 2

#In this example, it checks whether the string "Strawberry" is stored in the array element.

The output value of the execution result is "2", which means the index number of the corresponding array element.

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