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<!DOCTYPE html> <html lang="en-US"> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> </head> <body> <h1>jQuery inArray() Method</h1> <p>Click on the button and check your console.</p> <button>Click Me</button> <script> $(document).ready(function(){ $("button").click(function(){ var arr = [11, 12, 13, 14]; // If exist return index else -1 console.log($.inArray(12, arr)); //check after first element console.log($.inArray(12, arr, 1)); //check after second element console.log($.inArray(12, arr, 2)); console.log($.inArray(15, arr)); }); }); </script> </body> </html>
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