# LearnCodeGuide
# AI-powered code analysis platform — learncodeguide.com

> LearnCodeGuide uses GPT-4o + Claude Sonnet to detect bugs, security vulnerabilities,
> and code quality issues in JavaScript, Python, TypeScript, Java, and C++.
> Free trial available — no credit card required.

## Language Guides

- [JavaScript Code Review Guide](https://www.learncodeguide.com/learn/javascript-code-review)
- [Python Code Review Guide](https://www.learncodeguide.com/learn/python-code-review)
- [Java Code Review Guide](https://www.learncodeguide.com/learn/java-code-review)
- [TypeScript Code Review Guide](https://www.learncodeguide.com/learn/typescript-code-review)

## Security Guides

- [Python Security Mistakes](https://www.learncodeguide.com/learn/python-security-mistakes)
- [JavaScript Security Checklist](https://www.learncodeguide.com/learn/javascript-security-checklist)
- [Java Security Checklist](https://www.learncodeguide.com/learn/java-security-checklist)
- [TypeScript Security Mistakes](https://www.learncodeguide.com/learn/typescript-security-mistakes)
- [SQL Injection Code Examples](https://www.learncodeguide.com/learn/sql-injection-code-examples)
- [Path Traversal Examples](https://www.learncodeguide.com/learn/path-traversal-examples)
- [SQL Injection in Python](https://www.learncodeguide.com/learn/python-sql-injection)
- [SQL Injection in JavaScript](https://www.learncodeguide.com/learn/javascript-sql-injection)
- [SQL Injection in Java](https://www.learncodeguide.com/learn/java-sql-injection)
- [SQL Injection in TypeScript](https://www.learncodeguide.com/learn/typescript-sql-injection)
- [XSS in JavaScript](https://www.learncodeguide.com/learn/javascript-xss)
- [XSS in Python](https://www.learncodeguide.com/learn/python-xss)
- [XSS in Java](https://www.learncodeguide.com/learn/java-xss)
- [XSS in TypeScript](https://www.learncodeguide.com/learn/typescript-xss)
- [CSRF in JavaScript](https://www.learncodeguide.com/learn/javascript-csrf)
- [Command Injection in Python](https://www.learncodeguide.com/learn/python-command-injection)
- [Command Injection in Java](https://www.learncodeguide.com/learn/java-command-injection)
- [Hardcoded Secrets in Python](https://www.learncodeguide.com/learn/python-hardcoded-secrets)
- [Hardcoded Secrets in TypeScript](https://www.learncodeguide.com/learn/typescript-hardcoded-secrets)
- [Path Traversal in Python](https://www.learncodeguide.com/learn/python-path-traversal)

## Bug Detection Guides

- [Find Bugs in Code](https://www.learncodeguide.com/learn/find-bugs-in-code)
- [Common Python Bugs](https://www.learncodeguide.com/learn/common-python-bugs)
- [Common JavaScript Bugs](https://www.learncodeguide.com/learn/common-javascript-bugs)
- [Detect Python Bugs](https://www.learncodeguide.com/learn/detect-python-bugs)
- [Python NoneType Error](https://www.learncodeguide.com/learn/python-none-type-error)
- [Python Mutable Default Argument](https://www.learncodeguide.com/learn/python-mutable-default-argument)
- [JavaScript Undefined Errors](https://www.learncodeguide.com/learn/javascript-undefined-errors)
- [JavaScript Async/Await Mistakes](https://www.learncodeguide.com/learn/javascript-async-await-mistakes)
- [Java NullPointerException](https://www.learncodeguide.com/learn/java-null-pointer-exception)
- [TypeScript Null/Undefined Errors](https://www.learncodeguide.com/learn/typescript-null-undefined-errors)

## Code Quality Guides

- [Code Smells Examples](https://www.learncodeguide.com/learn/code-smells-examples)
- [How to Improve Code Quality](https://www.learncodeguide.com/learn/how-to-improve-code-quality)
- [Refactor Code with AI](https://www.learncodeguide.com/learn/refactor-code-with-ai)

## Use Case Guides

- [AI Code Review for Beginners](https://www.learncodeguide.com/learn/ai-code-review-for-beginners)
- [AI Code Review for Students](https://www.learncodeguide.com/learn/ai-code-review-for-students)
- [Security Code Analysis](https://www.learncodeguide.com/learn/security-code-analysis)
- [Code Review Checklist for Beginners](https://www.learncodeguide.com/learn/code-review-checklist-beginners)
- [How to Review Code Faster](https://www.learncodeguide.com/learn/how-to-review-code-faster)
- [Explain Code with AI](https://www.learncodeguide.com/learn/explain-code-with-ai)

## Comparison Guides

- [LearnCodeGuide vs ChatGPT](https://www.learncodeguide.com/learn/learncodeguide-vs-chatgpt)
- [Free Code Review Tools](https://www.learncodeguide.com/learn/free-code-review-tools)

## Tool

- [Analyze Code Free](https://www.learncodeguide.com/analyze): Paste any Python, JavaScript, TypeScript, Java, or C++ code and get instant AI analysis
- [Learn](https://www.learncodeguide.com/learn): All developer guides index