Is there any way I can view the variables used in a javascript function without trawling through the code?
Using javascript on a server so cant really install an app to debug, is there a javascript function i can use in some way?
A:
Hi,
Well to list them you could try something like: for (var avar in this) console.log(avar)
Anyway, doesnt your server side JavaScript engine allow you to place breakpoint and see the vars in real time?
HTH
Romansky
2010-02-03 15:55:47
The properties of `this` are not the same as the variables in scope, and in fact inside a function call where `this` is not the global object will be completely unrelated.
Tim Down
2010-02-04 00:48:53
WTF with the downvote??If the this refers to the global scope window then it WILL list the relevant variables. I would down vote you if I could (not enough rep)
Romansky
2010-02-07 01:31:51
I downvoted your answer because it is incorrect, for the reasons I gave. Your comment "If the this refers to the global scope window then it WILL list the relevant variables." isn't quite true: `this` wouldn't contain the list of arguments passed into the function, for example. And as I pointed out, if `this` isn't the global object then its properties will have nothing to do with the variables in scope. And why would you downvote my answer?
Tim Down
2010-02-08 01:59:02
well for one you are behaving like a prick (I was trying to help), other then that I would agree some clarification would be helpful on top of my answer, but I hardly see a reason to downvote me.My answer is better then nothing. And I would downvote you thanks to your shitty attitude.
Romansky
2010-02-08 11:37:11
I don't doubt you were trying to help. I downvoted your answer, I didn't downvote *you*; try not to take it so personally. And if you improve your answer I will remove my downvote: there is something useful in what you say, but it needs a lot of qualification and as it stands is vague and misleading.
Tim Down
2010-02-09 09:46:20
+1
A:
Not unless the JavaScript implementation you're using has some extension that provides such a feature (browsers don't). JavaScript resolves identifiers inside a function using the scope chain; there's no single object that contains all the variables in scope, and the objects in the scope chain are inaccessible from code.
Tim Down
2010-02-04 01:00:17