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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>$.each() & $.map()</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <button id="run">Run</button> <pre id="out"></pre> <script> $("#run").click(function(){ var arr = [1,2,3]; var sum = 0; $.each(arr, function(i, v){ sum += v; }); var doubled = $.map(arr, function(v){ return v*2; }); $("#out").text("sum=" + sum + "\n" + "doubled=" + doubled.join(",")); }); </script> </body> </html>
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