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 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.

How to validate password strength in React

Learn how to implement password strength validation in React with real-time feedback, security requirements, and visual strength indicators.

How to validate email in React form

Learn how to implement robust email validation in React forms using regex patterns and real-time feedback for enhanced user experience.

How to remove from a Map in JavaScript

Learn how to remove entries from a JavaScript Map using the delete() method for efficient memory management and data cleanup operations.

How to add to a Map in JavaScript

Learn how to add key-value pairs to a JavaScript Map using the set() method for efficient data storage and retrieval operations.

How to run migrations in Node.js

Learn how to implement and run database migrations in Node.js applications using migration tools for version-controlled schema changes.

How to use Mongoose in Node.js

Learn how to integrate Mongoose ODM in Node.js applications for MongoDB operations with schemas, models, and queries for document database management.

How to use Vue with REST API

Learn how to integrate Vue applications with REST APIs using fetch, Axios, and composables for data fetching, error handling, and state management.

How to add GitHub login in Vue

Learn how to implement GitHub OAuth authentication in Vue applications using GitHub App integration for secure user login and authorization.

How to use built-in pipes in Angular

Learn how to leverage Angular built-in pipes including date, currency, decimal, percent, and async pipes for common data transformations.

How to use Angular pipes

Learn how to use Angular pipes for data transformation in templates with built-in and custom pipes for formatting, filtering, and displaying data.

How to create a global .gitignore file

Learn how to set up a global .gitignore file in Git to ignore files across all repositories on your system for consistent development workflow.

How to ignore files in Git with .gitignore

Learn how to ignore files and directories in Git using .gitignore patterns to prevent unwanted files from being tracked in your repository.

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Answers by CoreUI Core Team