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JAVASCRIPT Snippets.

Upload Files to a REST API using JavaScript FormData

Learn how to upload files, such as images or documents, to a backend REST API endpoint from a web browser using JavaScript's FormData object.

Dynamically Create and Append Elements from an Array

Learn how to programmatically create multiple new DOM elements from a JavaScript array of data and efficiently append them to a parent container.

Read and Write Custom Data Attributes with `dataset`

Learn how to easily access and modify custom HTML5 `data-*` attributes on DOM elements using the convenient `dataset` property in JavaScript.

Smoothly Scroll an Element into View

Learn how to programmatically scroll to any DOM element on your page, with an option for smooth scrolling behavior, enhancing user experience.

Vue Router 4 Programmatic Navigation

Implement dynamic navigation in your Vue 3 application using Vue Router's programmatic methods like `router.push()` for seamless user experience.

Custom Global Directives in Vue 3

Extend Vue's functionality with custom global directives. This snippet shows how to create and register a directive for common DOM interactions like auto-focusing elements.

Vue 3 Component Transitions with CSS

Enhance user interfaces with smooth entry/exit transitions for elements or components in Vue 3 using the built-in `<Transition>` component and CSS.

Vue 3 Template Refs for Direct DOM Access

Learn how to access DOM elements or component instances directly in Vue 3 using template refs, essential for integrating third-party libraries.

Implement Secure Password Hashing with Node.js and Bcrypt

Securely hash and verify user passwords in Node.js applications with the bcrypt library. Protect sensitive user credentials against brute-force and other common attacks.

Configure Essential HTTP Security Headers with Node.js Helmet

Configure essential HTTP security headers (HSTS, X-Frame-Options, CSP) in Node.js Express with Helmet middleware. Enhance browser-side security for your web applications.

Creating a Reusable Toggle State with a Vue 3 Composable

Learn to build a custom Vue 3 composable (`useToggle`) for managing boolean states, enhancing code reusability and keeping components clean.

Implementing a Modal Component with Vue 3 Teleport

Learn to create a robust modal or overlay component in Vue 3 using the `Teleport` feature, ensuring proper DOM structure independent of component hierarchy.