You know passing value to field by URL could be done by :
?name=data
For example :
Google.com/?q=stackoverflow
And then when you open this link you have "stackoverflow" written in the field. But I can't do this with some websites. For example : ( GitHub search bar name is also "q" )
github.com/?q=stackoverflow
If you open this link there is no text in the search field. I want to know why and how to make this method work for these websites?