The differences among ES6 , ECMAScript 6 and JavaScript

The differences among ES6 , ECMAScript 6 and JavaScript

What is difference between Java and C

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The differences among ES6 , ECMAScript 6 and JavaScript
ECMA stand for European Computer Manufacturer Association. ECMA is the association that puts out the guidelines for JavaScript in all browsers


What is ES6 (ECMAScript 6), the standard of JavaScript

The design process after ES6
Starting with ECMAScript 2016 (ES7), TC39 will time-box releases. A new version of ECMAScript will be released every year, with whatever features are ready at that time. That means that from now on, ECMAScript versions will be relatively small upgrades. For more information on the new process, including finished and upcoming feature proposals, consult the GitHub repository ecma262.
1.3 JavaScript versus ECMAScript
JavaScript is what everyone calls the language, but that name is trademarked (by Oracle, which inherited the trademark from Sun). Therefore, the official name of JavaScript is ECMAScript. That name comes from the standards organization Ecma, which manages the language standard. Since ECMAScript’s inception, the name of the organization has changed from the acronym “ECMA” to the proper name “Ecma”.
Versions of JavaScript are defined by specifications that carry the official name of the language. Hence, the first standard version of JavaScript is ECMAScript 1 which is short for “ECMAScript Language Specification, Edition 1”. ECMAScript x is often abbreviated ESx.
1.4 Upgrading to ES6
The stake holders on the web are:
• Implementors of JavaScript engines
• Developers of web applications
• Users
These groups have remarkably little control over each other. That’s why upgrading a web language is so challenging.
On one hand, upgrading engines is challenging, because they are confronted with all kinds of code on the web, some of which is very old. You also want engine upgrades to be automatic and unnoticeable for users. Therefore, ES6 is a superset of ES5, nothing is removed1. ES6 upgrades the language without introducing versions or modes. It even manages to make strict mode the de-facto default (via modules), without increasing the rift between it and sloppy mode. The approach that was taken is called “One JavaScript” and explained in a separate chapter.
On the other hand, upgrading code is challenging, because your code must run on all JavaScript engines that are used by your target audience. Therefore, if you want to use ES6 in your code, you only have two choices: You can either wait until no one in your target audience uses a non-ES6 engine, anymore. That will take years; mainstream audiences were at that point w.r.t. ES5 when ES6 became a standard in June 2015. And ES5 was standardized in December 2009! Or you can compile ES6 to ES5 and use it now.

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