<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Detect ECMA Version</title>
<script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>
<script>
"use strict";
var getECMAVersion = function() {
var rv ="";
return rv = null, "function" == typeof RegExp && (rv = {
edition: 3,
date_published: "1999-12"
}), "function" == typeof Array.isArray && (rv = {
edition: 5,
date_published: "2009-12"
}), "function" != typeof Array.find && "function" != typeof Array.findIndex || (rv = {
edition: 6,
date_published: "2015-06",
name: "ECMAScript 2015",
name_code: "ES2015"
}), "function" == typeof Array.prototype.includes && (rv = {
edition: 7,
date_published: "2016-06",
name: "ECMAScript 2016",
name_code: "ES2016"
}), "function" == typeof Object.entries && (rv = {
edition: 8,
date_published: "2017-06",
name: "ECMAScript 2017",
name_code: "ES2017"
}), "undefined" != typeof Promise && "function" == typeof Promise.prototype.finally && (rv = {
edition: 9,
date_published: "2018-06",
name: "ECMAScript 2018",
name_code: "ES2018"
}), "function" != typeof Object.fromEntries && "function" != typeof String.prototype.trimStart || (rv = {
edition: 10,
date_published: "2019-06",
name: "ECMAScript 2019",
name_code: "ES2019"
}), "function" == typeof BigInt && (rv = {
edition: 11,
date_published: "2020-06",
name: "ECMAScript 2020",
name_code: "ES2020"
}), rv
}
$(document).ready(function() {
var ecma = getECMAVersion();
if (typeof ecma !== "undefined") {
var ecmaversion = "";
if (ecma.edition) {
ecmaversion = ecmaversion + "<div>ECMAScript Edition: " + ecma.edition+ "</div>";
}
if (ecma.name) {
ecmaversion = ecmaversion + "<div>Name: " + ecma.name + "</div>";
}
if (ecma.date_published) {
ecmaversion = ecmaversion + "<div>Released: " + ecma.date_published + "</div>";
}
$("#ecma-verion").html(ecmaversion);
}
});
</script>
</head>
<body>
<div class="value" id="ecma-verion"></div>
</body>
</html>
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