Chrome OS comes a small update 70.0.3532.8. It fix a big bug which appeared on the last update a week ago. But, it also brings another bigger one... all the Linux apps are shown without any UI...

So this stops me from developing my next version of this website. Cos my main IDE is VS code which install in the Linux container.

So I searched, and found another way to code -- Chrome extensions.

1. Seabass Code Editor

Syntax highlighting for 25+ programming/markup languages: c, c++, css, go, html, java, javascript, json, jsx, latex, less, markdown, pascal, php, python, ruby, sass, scss, shell, stylus, svg, swift, typescript, xml, yaml
Code formatter for .html, .js, .jsx, .json, .less, .scss, .css files
Autocompletion support with hardware keyboard (for html, js, css and sql files)
Autosave on typing
Multiple (up to five) opened tabs
Both on-screen and hardware keyboards are supported

It supports jsx. but the mentioned autocomplete is not available, I dont know why.

2. Quantum

It also supports jsx. I like the way it looks.

3.Code Pad Text Editor

The UI is not bad, but not supporting jsx by now.

4.Material Neutron

Completely offline
Multiple themes
Fast!
Tabbed editing
Syntax highlighting for many languages
Remembers/restores open tabs
Open files directly from the Chrome OS file manager
Project view with full-text search
Sublime-compatible keymappings, including multiple cursors and selections

This is definitely the best one in my mind, it supports jsx. with beautiful Material Design, and what's more, it has a search feature.