JQuery checks whether the array contains the specified element.

JQuery checks whether the array contains the specified element.

This article mainly introduces jQuery's method to determine whether an array contains the specified elements. For more information, see

 

To determine whether an array contains an element, the principle is to traverse the entire array and then determine whether it is equal,

 

The Code is as follows:

Var arr = ["xml", "html", "css", "js"];
$. InArray ("js", arr); // 3 is returned,

 

-1 is returned if it is not included in the array;

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