Variables are one of the fundamental blocks of any programming language, the way each language defines how we declare and interact with variables can make or break a programming language. This means every developer should be able to understand how to effectively work with variables, their rules, ...
There are a couple new ways to declare variables in ES6 that help us out with scoping. We can declare variables withvar, which we've always used, but now we can use let and constto declare variables too. These two have some attributes about them which are going to be helpful for us ...
The 2015 edition of the ECMAScript spec, popularly known as ES6, added some new features to the JavaScript language. Arrow functions are one of them. Arrow functions differ from the regular function declaration in several ways, including how their syntax is expressed and how their scopes are de...
Instead, it uses arrows (combination of equals and greater than sign)=>to declare a function. This type of function was also introduced in the ES6 version of JavaScript. Here, we have created an empty object,obj. We will create an arrow function that takes an object as a parameter (entir...
With TypeScript, you usually have to declare the property first in the body of the class and give it a type. For example, add anameproperty to yourPersonclass: classPerson{name:string;constructor(name:string){this.name=name;}} Copy ...
If you do not wish to create a TypeScript environment on your local machine, you can use the officialTypeScript Playgroundto follow along. You will need sufficient knowledge of JavaScript, especially ES6+ syntax, such asdestructuring, rest operators, andimports/exports. If you need more informati...
ES6 (ECMAScript 2015) introduced arrow functions as a concise and convenient way to write functions in JavaScript. They are also known as “fat arrow” functions and offer a shorter syntax compared to traditional function declarations. Arrow functions are particularly useful for creating anonymous fun...
Learn how to use this new feature currently available in v8Usually can use await only inside async functions. So it’s common to declare an immediately invoked async function expression to wrap it:(async () => { await fetch(/* ... */) })()...
To use ES6 modules in the browser you currently need to include a module loader such as RequireJS or SystemJS or use a bundling tool such as Browserify. We're actively discussing implementing a simple bundling feature in the TypeScript compiler itself. Similar to--outit would allow you to ...
I had the need to shuffle the elements in a JavaScript array. In other words, I wanted to remix the array elements, to have them in a different order than the previous one. [1,2 I wanted something different any time I ran the operation, like this: ...