JavaScript was invented by Brendan Eich in 1995.
It was developed for Netscape 2, and became the ECMA-262 standard in 1997.
After Netscape handed JavaScript over to ECMA, the Mozilla foundation continued to develop JavaScript for the Firefox browser. Mozilla's latest version was 1.8.5. (Identical to ES5).
Internet Explorer (IE4) was the first browser to support ECMA-262 Edition 1 (ES1).
Year ECMA Browser 1995 JavaScript was invented by Brendan Eich 1996 Netscape 2 was released with JavaScript 1.0 1997 JavaScript became an ECMA standard (ECMA-262) 1997 ES1 ECMAScript 1 was released 1997 ES1 IE 4 was the first browser to support ES1 1998 ES2 ECMAScript 2 was released 1998 Netscape 42 was released with JavaScript 1.3 1999 ES2 IE 5 was the first browser to support ES2 1999 ES3 ECMAScript 3 was released 2000 ES3 IE 5.5 was the first browser to support ES3 2000 Netscape 62 was released with JavaScript 1.5 2000 Firefox 1 was released with JavaScript 1.5 2008 ES4 ECMAScript 4 was abandoned 2009 ES5 ECMAScript 5 was released 2011 ES5 IE 9 was the first browser to support ES5 * 2011 ES5 Firefox 4 was released with JavaScript 1.8.5 2012 ES5 Full support for ES5 in Safari 6 2012 ES5 Full support for ES5 in IE 10 2012 ES5 Full support for ES5 in Chrome 23 2013 ES5 Full support for ES5 in Firefox 21 2013 ES5 Full support for ES5 in Opera 15 2014 ES5 Full support for ES5 in all browsers 2015 ES6 ECMAScript 6 was released 2016 ES6 Full support for ES6 in Chrome 51 2016 ES6 Full support for ES6 in Opera 38 2016 ES6 Full support for ES6 in Safari 10 2017 ES6 Full support for ES6 in Firefox 54 2017 ES6 Full support for ES6 in Edge 15 2018 ES6 Full support for ES6 in all browsers ** Note* Internet Explorer 9 did not support ES5 "use strict".
** Internet Explorer 11 does not support ES6.
The ECMA Technical Committee 39In 1996, Netscape and Brendan Eich took JavaScript to the ECMA international standards organization, and a technical committee (TC39) was created to develop the language.
ECMA-262 Edition 1 was released in June 1997.
From ES4 to ES6When the TC39 committee got together in Oslo in 2008, to agree on ECMAScript 4, they were divided into 2 very different camps:
The ECMAScript 3.1 Camp:
Microsoft and Yahoo who wanted an incremental upgrade from ES3.
The ECMAScript 4 Camp:
Adobe, Mozilla, Opera, and Google who wanted a massive ES4 upgrade.
August 13 2008, Brendan Eich wrote an email:
It's no secret that the JavaScript standards body, Ecma's Technical Committee 39, has been split for over a year, with some members favoring ES4, a major fourth edition to ECMA-262, and others advocating ES3.1 based on the existing ECMA-262 Edition 3 (ES3) specification. Now, I'm happy to report, the split is over.
The solution was to work together:
The planned new release (ES6) was codenamed "Harmony" (Because of the split it created?).
ES5 was a huge success. It was released in 2009, and all major browsers (including Internet Explorer) were fully compliant by July 2013:
Chrome 23 IE10 / Edge Firefox 21 Safari 6 Opera 15 Nov 2012 Sep 2012 May 2013 Jul 2012 Jul 2013ES6 was also a huge success. It was released in 2015, and all major browsers were fully compliant by March 2017:
Chrome 51 Edge 14 Firefox 52 Safari 10 Opera 38 May 2016 Aug 2016 Mar 2017 Sep 2016 Jun 2016Track your progress - it's free!
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