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Markdown to HTML Converter
Easily convert Markdown text into HTML format.
Base64 Encoder/Decoder
Encode or decode text to and from Base64 format.
JSON to CSV Converter
Convert JSON data into CSV format effortlessly.
Text Diff Checker
Compare and find differences between two text files.
UUID Generator
Generate unique identifiers for your applications.
Password Generator
Create strong and secure passwords quickly.
Base64 Image Encoder
Encode images into Base64 strings.
Ascii Art Generator
Convert text into stylish ASCII art.
Crypto MarketCap Switcher
Quickly switch between crypto market cap views.
Crypto Address Validator
Validate cryptocurrency addresses easily.
JavaScript Obfuscator
Secure your JavaScript code by obfuscating it.
Laravel Log Cleaner
Clean up and manage your Laravel log files.
Tailwind Responsive Navbar Generator
Generate responsive navigation bars using Tailwind CSS.
HTML Minifier & Beautifier
Optimize or beautify your HTML code for readability or performance.
Meta Tag Extractor
Extract title, description, and meta tags from any webpage.
QR Code Generator
Generate QR codes for any text or URL.
Website Uptime & Status Checker
Check if a website is online and view its response details.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text for your projects.
Code Diff Visualizer
Compare and visualize differences between two code snippets with syntax highlighting.
JSON Formatter & Validator
Format and validate JSON data with instant error highlighting.
CSS Minifier
Minify and optimize your CSS code to improve site performance.
HTTP Header Checker
Inspect HTTP headers of any website or API endpoint quickly and easily.
HTTP Status Code Checker
Check HTTP status codes (200, 404, 500) for any URL and analyze server responses.
Code Snippet Manager
Save, organize, and share frequently used code snippets effortlessly.
Color Contrast Checker
Test text and background color contrast for WCAG accessibility compliance.
CSS Gradient Generator
Create custom CSS gradients with a live preview and copy the generated code easily.
HTML Table Generator
Quickly generate customizable and responsive HTML tables with ease.
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Unlock 2+ expert-curated var tutorials, real-world code snippets, and modern dev strategies. From fundamentals to advanced topics, boost your var skills on DeveloperBreeze.
In JavaScript, variables and constants are used to store data that your program can use and manipulate. This tutorial explains how to declare, initialize, and use variables and constants effectively.
Variables in JavaScript can be declared using three keywords: var, let, and const.
var
let
const
if
for
console.log(b); // ReferenceError: Cannot access 'b' before initialization let b = 7;