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JavaScript

illhueminati
illhueminati
41 Points
Posted by illhueminati
illhueminati
41 Points

The declaration of variables and var

Noticed in the one of the code alongs there was a var name.

This has always been a mixed bag talking to people about it. In computer science at university, var was still acceptable, lot of the old school professors were onboard with it. Jump to online dev communities, whether it be YouTube or Discord, using var is a sin. Looking through stack and top rated answers from this year, var is still being implemented.

Is there a reason it's so polarising, should it be used, should it no be used? Difficult to find a source I can trust I guess. Thanks for any information!

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

Ultimately I think it comes down to programming style. You get to choose whether to use it or not. Or if you work for an employer, they may provide you with coding standards that explicitly say when (or if) it can be used.

I personally like to use it for globals, to make their intention obvious. I also use it to create variables in the console, since the scope of the newer declarations can be too restrictive.