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JavaScript

Posted by Christopher Bailey
Christopher Bailey
14,880 Points

maybe just confusion

Not really a question, but a complaint... Why does Dave teach use "for (prop in person) " but yet the quiz let and his opening rant clearly state to use "for (var prop in person) " . Can someone answer for the lack in consistency in the teaching and quizlet???

1 Answer

Tsenko Aleksiev
Tsenko Aleksiev
3,819 Points

Hi there! The structure of the for/in loop is:

for(var prop in property)

I don't remember the video that you are talking about but I'm sure that Dave had declared the prop variable before the for/in loop, aka:

var prop;
for(prop in property)

You need to declare the variable but there is no matter where are you going to do it, before the loop or inside it. I think it's best to do it inside the loop, because you are only using that variable in the that perticular loop and if you are writing a big program with lots of code, you are going to mess up with the scope of the variables.

Christopher Bailey
Christopher Bailey
14,880 Points

Ok, I was a bit frustrated but that makes sense..

thank you much