ES6 Features Overview

Welcome to the guide on ES6 features! ES6, also known as ECMAScript 2015, introduced many new features and improvements to the JavaScript language. Below are some of the key features introduced in ES6:

• Let and Const: These keywords are used to declare variables. let allows you to declare a block-scoped variable, while const is used to declare a variable whose value cannot be reassigned.

  • Let: Allows variable declarations in blocks and loops.
  • Const: Declares a variable with a value that cannot be reassigned.

• Template Literals: This allows you to create multi-line strings and string interpolation, making it easier to work with strings.

  • Example:

    const message = `Hello, 
    my name is John.`;
    

• Arrow Functions: Arrow functions provide a more concise syntax for writing functions.

  • Example:

    const sum = (a, b) => a + b;
    

• Promises: Promises are used to handle asynchronous operations in JavaScript.

  • Example:

    function fetchData() {
      return new Promise((resolve, reject) => {
        // Fetch data from API
        resolve(data);
      });
    }
    

• Modules: ES6 introduced a new way to organize and share code using modules.

  • Example:

    // myModule.js
    export function sayHello() {
      console.log("Hello!");
    }
    

• Classes: Classes are used to define objects in a more traditional and familiar way.

  • Example:

    class Person {
      constructor(name) {
        this.name = name;
      }
    
      sayHello() {
        console.log(`Hello, my name is ${this.name}.`);
      }
    }
    

For more detailed information and examples, check out our ES6 Tutorial.

[center]