Posts tagged: async

Implement copy to clipboard buttons in WordPress using the modern navigator.clipboard API with an execCommand fallback for older browsers.

Catch synchronous and async JavaScript errors with try/catch, window.onerror and unhandledrejection to prevent silent failures in WordPress themes.

Trigger CSS animations and lazy-load iframes when elements enter the viewport using the Intersection Observer API.

Use ES module import/export syntax to split JavaScript into maintainable files with dynamic imports and tree-shaking support.

Learn how JavaScript Promises and async/await work with fetch API examples and parallel requests using Promise.all.

Database queries are the most common performance bottleneck on WordPress sites, and the problem compounds as content volume grows. A custom WP_Query that aggregates post counts across multiple taxonomies, a $wpdb query that joins several tables to build a statistics dashboard, a get_posts() call with complex meta conditions, or an external API request that fetches…

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…

Many WordPress features depend on tasks that run on a schedule rather than in response to a user request: sending scheduled emails, cleaning up expired session tokens, publishing posts scheduled for a future date, checking for plugin updates, and regenerating sitemaps after new content is published. WordPress implements all of these through a built-in pseudo-cron…

Loading data asynchronously without a full page reload is a fundamental technique in modern web development, and WordPress themes increasingly rely on it for features like live search suggestions, infinite scroll, dynamic filter results, and real-time content updates. Historically, WordPress developers reached for jQuery’s $.ajax() method to make these requests, and while jQuery is still…