What is enhanced object literal?
What is enhanced object literal?
Example 4: When defining object methods, it is no longer necessary to use the function keyword. Object literal enhancement allows us to pull global variables into objects and reduces typing by making the function keyword unnecessary.
What are JavaScript objects?
In JavaScript, an object is a standalone entity, with properties and type. Compare it with a cup, for example. A cup is an object, with properties. A cup has a color, a design, weight, a material it is made of, etc. The same way, JavaScript objects can have properties, which define their characteristics.
What is ecma6?
ECMAScript 6, also known as ECMAScript 2015, is the latest version of the ECMAScript standard. ES6 is a significant update to the language, and the first update to the language since ES5 was standardized in 2009. Implementation of these features in major JavaScript engines is underway now.
What are plain objects?
An Object created by literal notation or new Object are know as plain object.
What is ES6 and ES7?
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.
What is pojo in JavaScript?
The intuition behind POJOs is that a POJO is an object that only contains data, as opposed to methods or internal state. Most JavaScript codebases consider objects created using curly braces {} to be POJOs. However, more strict codebases sometimes create POJOs by calling Object.
What is ECMAScript 6 (ES6)?
ECMAScript 6 was the second major revision to JavaScript. ECMAScript 6 is also known as ES6 and ECMAScript 2015. This chapter describes the most important features of ES6. The let keyword allows you to declare a variable with block scope.
How does destructuring work in ECMAScript 6?
ECMAScript 6 (ES6) supports destructuring, a convenient way to extract values from data stored in (possibly nested) objects and arrays. This blog post describes how it works and gives examples of its usefulness.
What is an object literal in ECMAScript 6?
There is nicer syntax for constructing – an object literal: Destructuring in ECMAScript 6 enables the same syntax for extracting data, where it is called an object pattern: Just as the object literal lets us create multiple properties at the same time, the object pattern lets us extract multiple properties at the same time.
What is the merge operation in ECMAScript 6?
This blog post explains ECMAScript 6’s implementation of it, which is called Object.assign () . This merging operation has a name in the JavaScript ecosystem that is only used there (and, unfortunately, clashes with classic OOP terminology): “extend”. Two examples of “extend” being provided by libraries:
