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jQuery determines whether the array contains the specified element_jquery

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Release: 2016-05-16 16:10:20
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To determine whether an array contains an element, in principle, it is to traverse the entire array and then determine whether it is equal,

Copy code The code is as follows:

var arr = [ "xml", "html", "css", "js" ];
$.inArray("js", arr); //Return 3,

If not included in the array, return -1;

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