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jQuery determines whether the array contains the specified element_jquery

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2016-05-16 16:10:201979browse

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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