# GFM Elements Showcase This post demonstrates all the GitHub Flavored Markdown (GFM) elements and how they're displayed in this blog. Use this as a reference for formatting your posts. ## Text Formatting **Bold text** and *italic text* and ***bold italic*** text. ~~Strikethrough text~~ for corrections or deletions. `Inline code` for technical terms. ## Headers # Header 1 ## Header 2 ### Header 3 #### Header 4 ##### Header 5 ###### Header 6 ## Lists ### Unordered Lists - First item - Second item - Nested item - Another nested item - Third item ### Ordered Lists 1. First step 2. Second step 1. Sub-step 2.1 2. Sub-step 2.2 3. Third step ### Task Lists - [x] Completed task - [ ] Incomplete task - [ ] Another pending task - [x] Nested completed task - [ ] Nested incomplete task ## Links and Images ### Regular Links [Visit GitHub](https://github.com) ### Reference Links [Reference link 1][ref1] [Reference link 2][ref2] [ref1]: https://github.com [ref2]: https://gitlab.com ### Images ![Sample Image](https://picsum.photos/800/400) ### Images with Titles ![Alt text](https://picsum.photos/600/300 "Image Title") ## Code Blocks ### Syntax Highlighted Code ```javascript // JavaScript example with syntax highlighting function fibonacci(n) { if (n <= 1) return n; return fibonacci(n - 1) + fibonacci(n - 2); } const result = fibonacci(10); console.log(`Fibonacci(10) = ${result}`); ``` ```python # Python example import requests from typing import List, Dict def fetch_data(url: str) -> Dict[str, any]: """Fetch data from a REST API endpoint.""" try: response = requests.get(url) response.raise_for_status() return response.json() except requests.RequestException as e: print(f"Error fetching data: {e}") return {} # Usage example data = fetch_data("https://api.example.com/users") ``` ```bash # Shell script example #!/bin/bash echo "Starting deployment process..." # Check if required environment variables are set if [ -z "$API_KEY" ]; then echo "Error: API_KEY environment variable is not set" exit 1 fi # Build and deploy npm run build docker-compose up -d echo "Deployment completed successfully!" ``` ### Diff Code Blocks ```diff --- a/src/components/Button.jsx +++ b/src/components/Button.jsx @@ -1,8 +1,12 @@ import React from 'react'; +import PropTypes from 'prop-types'; -function Button({ text, onClick }) { +function Button({ text, onClick, variant = 'primary' }) { const className = `btn ${variant}`; - return ; + return ( + + ); } + +Button.propTypes = { + text: PropTypes.string.isRequired, + onClick: PropTypes.func.isRequired, + variant: PropTypes.oneOf(['primary', 'secondary', 'danger']) +}; + +export default Button; ``` ### Another Diff Example ```diff @@ -4,7 +4,7 @@ const express = require('express'); const app = express(); -app.listen(3000, () => { +app.listen(process.env.PORT || 3000, () => { console.log('Server is running'); }); ``` ### Code Blocks with Line Numbers ```html Example Page

Hello, World!

This is a sample HTML document.

``` ### Inline Code Examples Use the `git status` command to check repository status. The file is located at `~/projects/my-app/src/components/Button.jsx`. ## Tables ### Basic Table | Name | Age | Occupation | |------|-----|------------| | John | 28 | Developer | | Jane | 32 | Designer | | Mike | 45 | Manager | ### Table with Alignment | Left Align | Center Align | Right Align | |:-----------|:------------:|------------:| | Content 1 | Content 2 | Content 3 | | Short | Medium | Long | | A | B | C | ### Complex Table | Feature | Status | Priority | Assignee | Due Date | |---------|--------|----------|----------|----------| | User authentication | ✅ Done | High | @john | 2026-01-15 | | Payment integration | 🔄 In Progress | Critical | @jane | 2026-02-01 | | Dashboard redesign | ⏳ Pending | Medium | @mike | 2026-02-15 | ## Blockquotes ### Simple Blockquote > This is a simple blockquote. It's useful for highlighting important information or quotes. ### Blockquote with Formatting > **Important:** This is a blockquote with *formatted text* and `inline code`. > > It can span multiple paragraphs and include various formatting elements. ### Nested Blockquotes > This is the outer blockquote. > > > This is a nested blockquote. > > > > > This is a deeply nested blockquote. > > Back to the outer level. ## Horizontal Rules --- ### Different Styles *** --- ## Emojis Here are some commonly used emojis in technical documentation: ✅ Success | ❌ Failure | ⚠️ Warning | ℹ️ Information 🔧 Settings | 🚀 Deploy | 📊 Analytics | 🔒 Security ## Mathematical Expressions (if supported) Inline math: $E = mc^2$ Block math: $$ \sum_{i=1}^{n} i = \frac{n(n+1)}{2} $$ ## Details/Summary (HTML)

Click to expand technical details

This is hidden content that can be expanded by clicking the summary. It's useful for: - Technical specifications - Code explanations - Additional context - Debugging information

## Embedded Media ### YouTube Video [![Watch the video](https://img.youtube.com/vi/dQw4w9WgXcQ/0.jpg)](https://www.youtube.com/watch?v=dQw4w9WgXcQ) ### Vimeo Video [![Watch on Vimeo](https://i.vimeocdn.com/video/123456789_640.jpg)](https://vimeo.com/123456789) ## Footnotes Here's a sentence with a footnote[^1]. And another one[^note]. [^1]: This is the first footnote. [^note]: This is a named footnote with more detailed information. ## Definition Lists Term 1 : Definition 1 Term 2 : Definition 2 : Additional definition for the same term ## Highlighted Text (if supported) ==This text should be highlighted== ## Subscript and Superscript H~2~O is the chemical formula for water. E = mc^2^ is Einstein's famous equation. ### Scientific Examples - CO~2~ for carbon dioxide - X~10~ for multiplication by 10 - (x~1~, x~2~, x~3~) for coordinates - 2^10^ for 2 to the power of 10 - m^3^ for cubic meters - f'(x)^2^ for squared derivative ### Mathematical Expressions The Pythagorean theorem: a^2^ + b^2^ = c^2^ Logarithmic expression: log~2~(8) = 3 Chemical equation: 2H~2~ + O~2~ → 2H~2~O ## Keyboard Keys Press ++ctrl+c++ to copy. Use ++alt+tab++ to switch windows. ## Alerts and Callouts > **🔥 Tip:** Use keyboard shortcuts to improve productivity. > **⚠️ Warning:** Always backup your data before making changes. > **❗️ Note:** This feature is experimental and may change. ### GitHub-Style Alerts > [!NOTE] > This is a standard note alert. Use it for general information and reminders. > [!TIP] > This is a tip alert. Use it for helpful suggestions and best practices. > [!WARNING] > This is a warning alert. Use it for important cautions and potential issues. > [!IMPORTANT] > This is an important alert. Use it for critical information that must not be missed. > [!CAUTION] > This is a caution alert. Use it for potential dangers and negative consequences. ## Mermaid Diagrams (if supported) ```mermaid graph TD A[Start] --> B{Decision} B -->|Yes| C[Action 1] B -->|No| D[Action 2] C --> E[End] D --> E ``` ## Raw HTML You can also embed raw HTML when needed:

Custom HTML Content

This is a custom-styled div using raw HTML.

## Combined Elements Here's a section that combines multiple elements: > **💡 Pro Tip:** When working with APIs, always handle errors gracefully: > > ```javascript > try { > const response = await fetch('/api/data'); > const data = await response.json(); > console.log('✅ Data loaded successfully:', data); > } catch (error) { > console.error('❌ Failed to load data:', error); > } > ``` > > Remember to check the [API documentation](https://docs.example.com) for more details. --- ## Conclusion This showcase demonstrates all the major GFM elements supported. Use these formatting options to create rich, engaging content that's easy to read and understand. **Happy writing!** 🎉