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TypeScript supports three looping constructs:

• for loop - the classic way to loop.

• for..of loop - for looping over iterable objects

• for..in loop - for looping over object properties

Iterating over collections of something is such a common programming task, you will often find yourself using the for..of loop.

You’ll find yourself using the classic for loop mostly in situations where its syntax streamlines access to a loop counter that’s essential to your code implementation.

You will rarely need to iterate over an object’s properties, but when you do, you’ll see that you can still use a for..of loop instead of the more nuanced, legacy for..in loop.