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JAVASCRIPT Snippets.

Validate URL Format (HTTP/HTTPS)

Discover a robust JavaScript regex pattern to validate web URLs, ensuring they begin with http:// or https:// and follow standard domain and path structures.

Extract All Hashtags from a String

Learn how to efficiently extract all hashtags (words prefixed with #) from any given text string using a simple JavaScript regular expression for content analysis.

Sanitize Input by Removing Specific HTML Tags

Protect against XSS attacks by implementing a JavaScript regex to remove potentially malicious HTML tags like script and style from user-generated content for security.

Understanding Vue 3 Reactivity: `ref` vs `reactive`

Master Vue 3 reactivity by learning the core differences and appropriate use cases for `ref` and `reactive` to manage component state efficiently.

Creating Efficient Derived State with Vue 3 Computed Properties

Leverage Vue 3 computed properties to efficiently derive new state from existing reactive data, improving performance and code readability in your components.

Managing Side Effects with Vue 3 Composition API Lifecycle Hooks

Learn to use `onMounted`, `onUnmounted`, `onUpdated`, and other Vue 3 Composition API lifecycle hooks to manage component side effects cleanly and effectively.

Reacting to Data Changes with Vue 3 Watchers (`watch` and `watchEffect`)

Implement Vue 3 watchers (`watch` and `watchEffect`) to perform side effects in response to reactive data changes, with deep watching and immediate options.

Vue 3 Component Communication: Props and Emits

Understand how to pass data down with `defineProps` and emit events up with `defineEmits` for effective communication between parent and child components in Vue 3.

Robust Data Fetching with Async/Await and Error Handling

Learn to fetch data from APIs reliably using async/await, including proper error handling, loading states, and cancellation for web applications.

Making Authenticated API Requests with Bearer Tokens

Learn to securely send authenticated API requests by including a Bearer token in the Authorization header using JavaScript's fetch API or Axios.

Implementing API Response Pagination on the Frontend

Efficiently manage and display large datasets from APIs by implementing frontend pagination logic, allowing users to navigate through results.

Uploading a File to an API using FormData

Learn to upload files to an API endpoint using JavaScript's FormData object and fetch API, correctly handling file and additional data submission.