AM Coder - JS Iterating Masterclass (Looping over Arrays, Objects, Sets and Maps)

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  1. Web Development with Alex Merced
  2. Programming
  3. Javascript
  4. PHP
  5. Python
  6. Go
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Hey Alex,
Useful video thanks! Question which I can't seem to find any info on - unless I'm doing something wrong it seems that you can do:
for(let key in obj) OR for(key in obj) both work so is the variable type declaration optional? Thanks!

simonattley