JavaScript-JavaScript Learning Guide

Example

document.getElementById('demo').innerHTML = 'Hello, World!';

Scenario

Used to dynamically update the content, style, and structure of web page elements. For example, changing the text of a paragraph when a user clicks a button.

Example

document.getElementById('myButton').addEventListener('click', function() { alert('Button clicked!'); });

Scenario

Enables interactive web pages by responding to user actions like clicks, mouse movements, and keyboard inputs. For instance, showing a modal window when a 'Sign Up' button is clicked.

Example

fetch('https://api.example.com/data').then(response => response.json()).then(data => console.log(data));

Scenario

Allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes. This is used in live search features, where search results update as you type without reloading the page.

Example

element.animate([{ transform: 'scale(1)' }, { transform: 'scale(1.5)' }], { duration: 1000, fill: 'forwards' });

Scenario

Used to create animations on web pages, enhancing user experience. For example, animating a dropdown menu to smoothly transition into view when hovered over.