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I was wondering if there was any way for me to run older versions of javascript in the web browser! I have apps that require ECMAScript 3 that broke and I was wondering if there was anyway to run older versions without a polyfill library!

Jacob Morris
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    JavaScript (ES) engines are built into the browsers -- if you want to find a specific engine, you'll have to find a browser that implemented it (digging up old Internet Explorers). However, very few things are depreciated -- so you can program in an older style and it should still be valid. – Doug May 14 '18 at 19:14
  • Thanks for fixing my grammer! I am bad at spelling and I am very young (won’t say exact age so I can keep my account) but around if you get the picture 6th to 8th grade! – Jacob Morris May 14 '18 at 19:15
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    You should not be using goto. That kind of coding leads to all kinds of errors in your code that are hard to trace... I would STRONGLY recommend learning the "new" syntax (if, for, while, etc.) over using goto – Jonathan Rys May 14 '18 at 19:17
  • @Jonathan Rys Ok!! I’ll try learning that syntax!! I use w3schools.com which doesn’t have the best teaching method do you know any good sites or books for learning ECMAScript 5/6? – Jacob Morris May 14 '18 at 19:19
  • Here's a joke post about using goto: https://stackoverflow.com/questions/9751207/how-can-i-use-goto-in-javascript – Cody Ｇ May 14 '18 at 19:19
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    @JacobMorris https://www.codecademy.com/ – Jonathan Rys May 14 '18 at 19:21
  • @torazaburo Yes, those were the OP's words I was quoting. In fact that syntax predates JavaScript by a few decades. I believe Djikstra came up with structured programming. – Jonathan Rys May 14 '18 at 19:34
  • @JacobMorris great start: https://eloquentjavascript.net/. – ibrahim mahrir May 14 '18 at 19:40

2 Answers2

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While it works fine, I want it to use ECMAScript 3 for functions like goto and such

JavaScript does not have, and has never had, goto.

and I dislike using the newer keywords.

Whatever you mean by "newer keywords", if you dislike using them, then don't use them.

Does anyone know of a way to use older ECMAScript/JavaScript versions?

Yes, use any current ES/JS version, since they are all completely backward compatible for all practical purposes.

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Take a look at Babel, it's a traspiler of Js to Js, you can set the enter version and the out version and it's easy to setup.

Gabriel Carneiro
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