|ES5||ECMAScript 5 (2009)|
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.
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?
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.
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.