How jQuery determines whether a value exists in an array

How jQuery determines whether a certain value exists in an array: 1. Use the array to determine one by one. The code is [if($.inArray('A',Arry)){'exists'}else{does not exist ]; 2. Use indeOf to judge, the code is [if (tabs.indeOf('incoming value')>-1].

This tutorial operation Environment: windows7 system, jquery3.2.1 version, this method is suitable for all brands of computers.

jQuery method to determine whether a certain value exists in an array:

Method 1 :

var Arry = [‘A’,‘B’,‘C’,‘D’,‘E’,‘F’];
if($.inArray(‘A’,Arry)){
‘存在’
}else{
不存在
}

Method 2:

var tabs = [‘A0’,‘B0’,‘C0’,‘D0’];
if (tabs.indeOf(‘传入值’)>-1){
为真
}else{
为假
}

Related learning recommendations: javascript learning tutorial

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