Write a JavaScript program to check whether the given year is leap year or not?
<html> <head> <title>Two textbox, when enter data in one textbox, it appears in second textbox</title> <link rel="stylesheet" type="text/css" href="style.css"> /<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.3/moment.min.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("#leap1").click(function(){ var yr = $("#leap").val(); if (yr%4 == 0) { if (yr%100 == 0) { if (yr%400 != 0) { alert("Not Leap year"); return "false"; } if (yr%400 == 0) { alert("Leap year"); return "true"; } } if (yr%100 != 0) { alert("Leap Year"); return "true"; } } i...