Es6 new features9/14/2023 Variables declared with let cannot be hoisted or redeclared. The let keyword allows for block-scoped variables. Variables declared with var can be hoisted, reassigned, and redeclared. The var keyword defines a variable globally, or locally to an entire function, regardless of block scope. And JavaScript is a scripting language that follows those ES standards. ES is a standard, kinda like a book of rules. In plain English, ES is short for ECMAScript. As a result, there aren't huge feature releases and huge gaps in time between releases. And since 2015, TC39 has released new features incrementally each year. (The previous release to ES6 was in 2011, ES5.1). In 2015, there was a huge shift because ES6 was introduced, meaning a lot of new features were released. TC39, a committee within ECMA International, determines how JavaScript works and what new features it should have. ECMA International is an association that develops the ES specifications. JavaScript, a programming language, is an implementation of ECMAScript specifications. What is ECMAScriptĮCMAScript is a scripting language specification. This blog explores a few commonly used ES6, ES7, ES8, ES9, and ES10 features. Features from ES6 and beyond are commonly referred to as Modern JavaScript because of these significant changes. Since then, new features have been released incrementally each year. ECMAScript 2015, also known as ES6, introduced a lot of new features to JavaScript.
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