Answers by CoreUI Core Team

Explanations that go beyond quick fixes — helping developers understand the concepts behind problems, why they happen, and how to avoid them in the future.

How to export data to CSV in Vue

Export data to CSV format in Vue 3 by converting arrays to CSV strings and triggering a download with blob URLs.

How to download files in Vue

Download files in Vue 3 by creating a blob URL and triggering a download using an anchor element programmatically.

How to format JSON with Angular json pipe

Format and display JSON objects in Angular templates using the built-in json pipe for debugging and data visualization.

How to format numbers with Angular decimal pipe

Format decimal numbers in Angular templates using the built-in decimal pipe with custom precision and digit grouping.

How to upload a file in React

Upload files in React using a file input element, handling file selection with onChange, and sending files via FormData with fetch or Axios.

How to reset form in React

Reset form fields in React by resetting state to initial values or using the native form reset method with refs.

How to throw an error in JavaScript

Throw custom errors in JavaScript using the throw statement with Error objects to handle exceptional situations in your code.

How to detect dark mode in JavaScript

Detect dark mode preference in JavaScript using the matchMedia API to check the prefers-color-scheme media query.

How to configure Git editor

Configure your preferred text editor for Git commit messages and interactive operations using git config core.editor command.

How to remove a file from Git history

Remove a file from Git history completely using git filter-repo or BFG Repo-Cleaner to purge sensitive data from all commits.

How to handle pagination in Node.js APIs

Implement pagination in Node.js REST APIs using limit and offset parameters with proper response metadata for total count and page info.

How to handle transactions in Node.js

Handle database transactions in Node.js using Sequelize, TypeORM, or native database clients to ensure data integrity with commit and rollback.

How to preview images before upload in Vue

Preview images before uploading in Vue 3 by using FileReader to read the file and display it with a data URL.

How to upload files in Vue

Upload files in Vue 3 using a file input, handling the change event, and sending files with FormData and fetch or Axios.

How to format currency with Angular currency pipe

Format currency values in Angular templates using the built-in currency pipe with proper locale-specific formatting and symbols.

How to format dates with Angular date pipe

Format dates in Angular templates using the built-in date pipe with custom format strings like YYYY-MM-DD or short date formats.

How to disable submit button in React until form is valid

Disable a submit button in React until form validation passes by using the disabled attribute with form validity state.

How to show validation errors in React

Display form validation errors in React by storing error messages in state and conditionally rendering them below form fields.

How to measure execution time in JavaScript

Measure JavaScript execution time accurately using console.time() or performance.now() for precise timing measurements.

How to profile performance in JavaScript

Profile JavaScript performance using Chrome DevTools Performance tab and the Performance API for accurate timing measurements.

How to copy text to clipboard in JavaScript

Copy text to clipboard in JavaScript using the modern Clipboard API with navigator.clipboard.writeText() method.

How to convert NodeList to an array in JavaScript

Learn the modern way to convert a NodeList to an array in JavaScript using the spread operator or Array.from() method.

How to query databases in Node.js

Learn how to perform database queries in Node.js using SQL and ORM approaches for efficient data retrieval and manipulation in applications.

How to seed databases in Node.js

Learn how to create database seed scripts in Node.js for populating initial data, testing environments, and development setup automation.

How to use Apollo Client in Vue

Learn how to integrate Apollo Client with Vue for powerful GraphQL data management with caching, optimistic updates, and reactive queries.

How to use Vue with GraphQL

Learn how to integrate Vue applications with GraphQL APIs for efficient data fetching, caching, and real-time updates using modern query patterns.

How to create custom pipes in Angular

Learn how to create custom pipes in Angular for specialized data transformations with the Pipe decorator and PipeTransform interface.

How to chain pipes in Angular

Learn how to chain multiple pipes in Angular templates for sequential data transformations with optimal performance and readable syntax.

How to configure Git aliases

Learn how to create Git aliases for common commands to improve productivity with shorter, custom commands for faster development workflow.

How to use .gitkeep in Git

Learn how to use .gitkeep files to track empty directories in Git repositories for maintaining project structure and build processes.