Which is the latest JavaScript version?

What version is JavaScript on?

JavaScript versions

Version Official Name
ES5 ECMAScript 5 (2009)
ES6 ECMAScript 2015
ES6 ECMAScript 2016
ES6 ECMAScript 2017

What is ES7 JavaScript?

Introducing the new features that ECMAScript 2016 (ES7) adds to JavaScript. Since ECMAScript 2015 (also known as ES6) was released, it has introduced a huge set of new features. They include arrow functions, sets, maps, classes and destructuring, and much more. … ECMAScript 2016 introduced only two new features: Array.

What is new in ES6?

The introduction of the ES6 specification lists all new features: Some of [ECMAScript 6’s] major enhancements include modules, class declarations, lexical block scoping, iterators and generators, promises for asynchronous programming, destructuring patterns, and proper tail calls.

Is ES7 released?

ES7 or ECMAScript 2016 was released in the year 2016. This version gives suitable alternatives to already used functionalities.

What was the first browser to support JavaScript?

Netscape. Netscape is the first browser to support JavaScript among all the other web browsers.

What JavaScript version should I learn?

So: if you want to become any kind of web developer, you absolutely need to learn JavaScript—and you should start with plain old vanilla JavaScript first. The best way to start learning JavaScript is to get hands-on.

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Is ES7 supported in all browsers?

Solution: Browser vendors don’t implement specific versions, but specific features. Almost every modern browser is still missing features from ES2017-ES2020. … Since ES6 is still being adopted and not all browsers support everything there’s no reason for them to aim for ES7.

What ECMAScript 2020?

The latest standard for JavaScript, ECMAScript 2020 introduces new features for module loading, precision integers, and strings. … ECMAScript 2020 introduces multiple features ranging from a new import() facility for loading modules to a new BigInt type for working with arbitrary precision integers.

Is ES6 faster than ES5?

As ES5 is prior to ES6, there is a non-presence of some features, so it has a lower performance than ES6. Because of new features and the shorthand storage implementation ES6 has a higher performance than ES5. A wide range of communities supports it. It also has a lot of community support, but it is lesser than ES5.

Is NaN in JavaScript?

JavaScript Number isNaN()

isNaN() method determines whether a value is NaN (Not-A-Number). This method returns true if the value is of the type Number, and equates to NaN. Otherwise it returns false. … isNaN() does not convert the values to a Number, and will not return true for any value that is not of the type Number.

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