Learn how to get JavaScript timestamps using Date.now() and other methods. Convert between milliseconds and seconds, optimize performance, and handle time zones effectively. Complete guide with practical examples.
Learn how to remove properties from JavaScript objects using delete operator and modern ES6+ methods. Compare performance, mutability, and best practices for different scenarios.
Master JavaScript array iteration with comprehensive guide covering for...of, traditional for loops, forEach, map, filter, and reduce methods. Compare performance and learn when to use each method.
Learn the best methods to format numbers with commas as thousands separators in JavaScript. Discover built-in Intl methods, regex patterns, and performance-optimized solutions for integers and floating-point numbers.
Learn how to implement jQuery's $(document).ready using native JavaScript DOMContentLoaded event. Complete guide with code examples and browser compatibility solutions.
Learn multiple methods to remove duplicate values from JavaScript arrays including ES6 Set, filter(), reduce(), and jQuery solutions. Compare performance and choose the best approach for your project.
Learn how to append objects to JavaScript arrays using push(), unshift(), splice(), and spread syntax. Discover performance tips and immutable alternatives for modern JavaScript development.
Learn the key differences between JavaScript's call() and apply() methods. Discover how they handle arguments, performance considerations, and when to use each method with practical examples.
Learn the key differences between JavaScript's == and === operators, their performance implications, and when to use each for optimal code quality and efficiency.
Learn multiple methods to find differences between JavaScript arrays. From basic filtering to ES6 Set operations, discover efficient solutions with code examples and performance considerations.
Learn the most reliable methods to measure JavaScript function execution time in milliseconds using performance.now() API. Get accurate timing measurements for optimization.
Learn multiple methods to check if an object has a specific property in JavaScript. Compare hasOwnProperty(), in operator, Object.hasOwn(), and alternatives with performance insights.
Learn optimal script tag placement for better performance. Discover traditional vs modern approaches, async/defer attributes, and best practices for different use cases.
Learn the optimal placement for script tags in HTML. Discover modern async/defer strategies, jQuery recommendations, and performance best practices for faster page loading.
Learn the most efficient ways to add elements to the beginning of JavaScript arrays using unshift(), spread operator, and other methods. Compare performance and best practices for your code.
Master JavaScript string capitalization with our comprehensive guide. Learn the most efficient method to capitalize the first letter while preserving the rest of the string.
Discover the best practice for href values in JavaScript links. Compare href='#' vs javascript:void(0) for functionality, performance, validation, and accessibility. Learn modern web development recommendations.
Master JavaScript array iteration with our comprehensive guide covering traditional loops, forEach, map, filter, and reduce methods. Learn performance tips and best practices for different scenarios.