ES6 is the language's sixth edition, which was eventually renamed ECMAScript 2015. In June 1997, the first edition was released. Javascript and its specification were later submitted to ECMA (European Computer Manufacturers Association) for standardisation. Java was becoming increasingly popular around the world at the time (both are anyways different). The name JavaScript was picked for marketing purposes when it first appeared in the programming realm. Explain Internationalization and Localization. Why does the following not work as an IIFE (Immediately Invoked Function Expressions) ? What needs to be modified in order for it to be classified as an IIFE?
What is the difference between const and eeze(). What is the difference between Set and WeakSet in ES6? What is the advantage of using the arrow syntax for a constructor method? What is a WeakMap in ES6? How is it different from a Map? ES6 Interview Questions for Experienced.What is the result of the spread operator array shown below? How do you use Destructuring Assignment to swap variables? Compare the ES5 and ES6 codes for object initialization and parsing returned objects. Name some string functions introduced in ES6. Name some array methods that were introduced in ES6. What is the reason behind adding Symbol to ES6? What is the difference between for.of and for.in? Which keyword can be used to deploy inheritance in ES6? What is Export Default and Named Export in ES6?
What do you understand about IIFE (Immediately Invoked Function Expressions)? What do you understand about default parameters? What is the difference between let and const? What distinguishes both from var? Give a thorough comparison between ES5 and ES6. What are the object oriented features supported in ES6. This can be achieved with the help of default function parameters. It may be handy to set a different value instead. In JavaScript, the default value for function parameters is undefined. One can write code in ES5 and gradually switch to ES6 features with ease.īelow is the list of top ES6 features every JavaScript developer should know, With Object-Oriented Classes, Arrow Functions, String Literals and much more, ES6 is a feature-rich advancement to ES5, the previous version of JavaScript, and is 100% backwards compatible. With a lot of forward-thinking features (ES6) attached to it, JavaScript is an exciting language to program.ĮS6 is the basis for modern programming languages like Angular and ReactJs. ES6 has many new features that can help a developer understand and write code more efficiently. ES6 is a new standardized version of javascript that was released in 2015.
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