Defer parsing of JavaScript

Web Performance Discuss Test Results
1

I have add defer=“defer” to scripts but test result until messenger "Defer parsing of JavaScript
This is my site http://trihung.com
Any body help me? How to defer parsing of JavaScript?
Thanks

2

Defer it until when and is it an external or inline script? defer will defer the script execution until right after the parser parses the html but only works for external scripts and doesn’t give you a lot of control over it.