how to turn on auto save in vs code code example

Example 1: autoformating for code in vscode when i save it

"editor.formatOnSave": true

Example 2: vs code disable auto file save

Files: Auto Save : Controls auto save of dirty files.
afterDelay

Files: Auto Save Delay : Controls the delay in ms
after which a dirty file is saved automatically. 
Only applies when Files: Auto Save is set to afterDelay.
600000