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Where does this.query come from?
I'm a little confused about how this.query is used.
Where is query and what is it's purpose?
The only thing I can think of is it's coming from the app.js file where 'query' is used as an argument in the performSearch function but that wouldn't make much sense because we're not calling props.performSearch(query). The only other thing I can think of is perhaps it's native to JS?
Tomas Schaffer11,594 Points
performSearch is function passed from parrent and query is argument of this function. Because you didnt share your code how can anybody know where is it come from? it is variable and it can be inserted from external file or whatever.
Joe Elliot5,329 Points
I am wondering the same thing and had the same conclusion as you. I tested the theory by changing the argument name and matched all the references to that argument name.
So like Tomas said, it's because performSearch is a function passed as a prop to SearchForm.
Doesn't seem intuitive to me but I guess that's how it is!