JavaScript event delegation explained with practical examples
Use event delegation to handle click events on dynamically added DOM elements using event.target.closest in vanilla JS.
JavaScript Promises and async await explained with examples
Learn how JavaScript Promises and async/await work with fetch API examples and parallel requests using Promise.all.
Store data in the browser with localStorage and sessionStorage
Modern web applications frequently need to persist small pieces of data on the client side between page loads or between browser sessions without making a server request. The Web Storage API provides two mechanisms for this: localStorage, which persists data until explicitly cleared, and sessionStorage, which clears automatically when the browser tab is closed. Both…
Debounce user input with vanilla JavaScript
Every time a user types in a search field, the browser fires an input event on each keystroke. Without any rate limiting, your JavaScript callback executes on every single key press — which on a fast typist means 5–10 function calls per second. If each call triggers an AJAX request to a search endpoint or…
Simple mail form use AJAX
Simple example use AJAX for HTML form As they say: For developer doesn’t live by WordPress alone.Today, I give an example work to AJAX for building simple landing page without use most popular CMS. In this example we’ll not use back-end validation for fields, but we’ll use requirement attribute for fields. In really life, not…
Read URL Query Parameters with JavaScript (jQuery Helper Function)
PHP provides $_GET for reading URL query parameters, but JavaScript has no built-in equivalent (the modern URLSearchParams API was not yet widely supported in older projects). The classic workaround is a small regex helper function that extracts a named parameter from any URL string.