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JavaScript The Solution

Jesse Dispoto
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Jesse Dispoto
Front End Web Development Techdegree Graduate 14,538 Points
Posted by Jesse Dispoto
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Jesse Dispoto
Front End Web Development Techdegree Graduate 14,538 Points

Why is Dave still using var to initialize variables? Shouldn't we be using let and const when initializing variables?

Learning a lot from this JS course. However, I have now switched over to using let and const when working with variables, not var. Why is Dave still using var? I would be a good idea to switch over to let and const now. Where these videos made before 2015? Should this be updated?

1 Answer

Michael Hulet
Michael Hulet
47,913 Points
Michael Hulet
Michael Hulet
47,913 Points

Judging by the UI in the video, it looks a tad bit on the older side, but the video file's timestamp says that the file was created in April 2017 (let and const still weren't insanely well-supported back then iirc). However, even though it's 2019, the var keyword isn't going anywhere, is still valid JavaScript, and still has its use cases. I'd argue that it's good to use let and const by default like you're doing now to keep scope clearer and cleaner, but if you want your variable to be hoisted, it's still just fine to use var