You can create website, run the website in browser and see error or logs in the console.
Open source project: github.com/deadlyjack/code-editor
1. No ads
2. Edit any file from your device.
3. GitHub support
4. FTP support (No SFTP yet, plans to add it later)
5. Supports syntax highlighting for 100+ programming languages
6. Dozens of themes
7. User friendly
8. In-app HTML/Mark Down preview
10. In app file browser
11. Open source
12. Supports 50,000+ lines
13. Fast work flow
14. Open more than one file
16. Keyboard shortcuts