Premium
JAVASCRIPT Snippets.

Uploading Files to a REST API with FormData and Fetch API

Learn how to upload files (e.g., images, documents) to a backend API using JavaScript's FormData object and the Fetch API, handling multipart/form-data.

Canceling Pending API Requests with AbortController in JavaScript

Improve performance and user experience by learning to cancel unwanted or stale API requests using the AbortController with the Fetch API.

Efficiently Handling API Pagination for Large Datasets

Master fetching paginated data from REST APIs. Learn to make sequential requests to retrieve all pages of a dataset using a loop and async/await for complete data retrieval.

Validate Email Addresses with Regex

Learn how to accurately validate email address formats using a robust regular expression in JavaScript, essential for form submissions.

Validate URLs with Regular Expressions

Implement robust URL validation in JavaScript using a regular expression to ensure proper web address formatting for user inputs and links.

Enforce Password Strength with Regex

Create a JavaScript function using regex to enforce strong password policies, requiring uppercase, lowercase, numbers, and special characters.

Extract Hashtags and Mentions from Text

Learn to extract all hashtags (#tag) and mentions (@user) from a string using regular expressions in JavaScript, perfect for social media features.

Sanitize HTML by Removing Tags with Regex

Remove all HTML tags from a string using a simple regular expression in JavaScript, useful for basic text sanitization and preventing XSS.

Implementing a Custom Auto-Focus Directive

Learn how to create a custom Vue 3 directive `v-focus` to automatically focus an input element when its component mounts, enhancing user experience.

Dependency Injection with `provide` and `inject`

Master Vue 3's `provide` and `inject` to efficiently pass data down the component tree, avoiding prop drilling and creating flexible component architectures.

Implementing a Global Error Handler

Set up a global error handler in Vue 3 to catch unhandled errors from components, lifecycle hooks, and event handlers, improving application stability and debugging.

Integrating Chart.js into a Vue 3 Component

Learn to wrap a third-party JavaScript library like Chart.js within a Vue 3 component, managing its lifecycle and data reactivity for dynamic visualizations.