Web animations can be implemented through several mechanisms, including JavaScript timers (setTimeout, setInterval), CSS3 properties (transition, animation), the HTML <canvas> element, and the requestAnimationFrame API. While timers and CSS handle many standard use cases, requestAnimationFrame...
Design patterns provide standardized solutions to recurring architectural challenges in client-side applications. By abstracting comon interaction flows into predictable structures, developers can improve code maintainability, testability, and scalability. The following sections detail four foundati...
Accessing the length property returns the total number of characters in a string. const greeting = "Hi"; console.log(greeting.length); // 2 const empty = ""; console.log(empty.length); // 0 Extracting Segments with substring The substring(start, end) method extracts characters be...
In JavaScript, object-oriented design structures complex modules as reusable, encapsulated units with properties and behaviors. Below are practical implementations of five core patterns: Factory Pattern The factory pattern encapsulates object creation in a function to produce multiple similar struct...
Fabric.js provides four primary methods for straightening elements (rotating them to 0°, 90°, 180°, or 270° based on proximity): Core Methods canvas.straightenObject(obj) - Immediate straightening obj.straighten() - Requires manual canvas refresh canvas.fxStraightenObject(obj) - Animated straighteni...
1. Utility Functions Convert File to Base64 function getBase64(file) { return new Promise((resolve, reject) => { const fileReader = new FileReader(); let result = ''; fileReader.readAsDataURL(file); fileReader.onload = () => { result = fileReader.result; }; fileReader.onerror = (error) => {...
Installation CDN <!-- Stylesheet --> <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@recogito/annotorious@2.7.10/dist/annotorious.min.css"> <!-- JavaScript --> <script src="https://cdn.jsdelivr.net/npm/@recogito/annotorious@2.7.10/dist/annotor...
jQuery provides two methods for plugin development: jQuery.fn.extend() and jQuery.extend(). jQuery.fn is equivalent to jQuery.prototype. This allows for the addition of methods to the prototype chain, which are then available to all instances of the jQuery class. jQuery.extend(object) adds static me...
The canvas.interactive Property in Fabric.js The interactive property controls whether the Fabric.js canvas responds to user interactions. According to the official documentation: Indicates that canvas is interactive. This property should not be changed. By default, canvas.interactive is set to true...
This article demonstrates three methods to implement a waterfall (masonry) layout: using plain JavaScript, jQuery, and CSS. Method 1: Using JavaScript <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Waterfall Layout</title>...