collection of sites to test your Codes Online

start coding on line with many web services

Full workspace

https://c9.io/
Cloud9 combines a powerful online code editor with a full Ubuntu workspace in the cloud
Workspaces are powered by Docker Ubuntu containers that give you full freedom over your environment, including sudo rights. Do a git push, compile SASS, see server output, and Run apps easily with the built-in Terminal and Runners.
Each new project is stored in a subfolder where you can generate real physical files. HTML, CSS, JS, PHP, anything you need to code will be saved locally in your account. Then you can later export these files as a whole project and download them to your computer.

Many langages

http://codepad.org/
codepad is an online compiler/interpreter, and a simple collaboration tool.
Paste your code below, and codepad will run it and give you a short URL
C, C++, D, Haskell, Lua, OCaml, PHP, Perl, Plain Text, Python, Ruby, Scheme, Tcl,

http://ideone.com/
Ideone is an online compiler and debugging tool which allows you to compile source code and execute it online in more than 60 programming languages.

javascript/html/CSS

http://jsbin.com/
Gist support: import and export
"add library" menu: you can select between any number of JS libraries – jQuery, JQuery UI...

https://jsfiddle.net/
jsFiddle also supports the inclusion of libraries such as jQuery. You can include additional external resources to JS/CSS files into each testing document. Incredibly their app even supports XHR Ajax where you can pass data back-and-forth between the server and client browser window.
https://jsfiddle.net/about

http://jsdo.it/
you must login but you have access to many codes and you can fork.
Here you can share JavaScript, HTML5 and CSS3 code snippets. Their app is not as open as the others, requiring a much more formal registration process. This requires connecting into any other social network such as Facebook, Twitter, Google, or Github. Then you select a username and off we go to code.
Many of the apps appear to have Japanese writing.
What I love about their interface is how you can actually upload files you’ve already created and store them into a project.

https://codepen.io/pen/

http://www.jslint.com/
JSLint is a JavaScript program that looks for problems in JavaScript programs. It is a code quality tool.

CSS

http://cssdesk.com/
you can fork.

For Google API 

 Google code sandbox "explorer".
https://developers.google.com/apis-explorer/?csw=1#p/

si vous voulez inclure un post sur votre blogspot:
https://developers.google.com/apis-explorer/?csw=1#p/blogger/v3/blogger.posts.insert

gérer votre google drive:
https://developers.google.com/apis-explorer/?csw=1#p/drive/v3/
https://developers.google.com/apis-explorer/?csw=1#p/sheets/v4/

Il faut aussi voir:
https://developers.google.com/
https://developers.google.com/maps/documentation/javascript/

Ref:

http://www.hongkiat.com/blog/tools-to-coding-online/