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JavaScript

Posted by Elizabeth Bazan
Elizabeth Bazan
3,007 Points

For Loop Syntax

In the for loop, what is the difference between using i++ vs i+=?

2 Answers

Adam N
Adam N
70,280 Points
Adam N
Adam N
70,280 Points

i++ is equivalent to i += 1. Increments i by 1

If you wanted to increment by a number other than 1 each time through the loop, you'd have to use the += version.

Let me know if this helps here

andren
andren
28,558 Points
andren
andren
28,558 Points

The ++ operator is a shorthand that adds 1 to whatever variable you use it on. So i++ is equivalent to saying i = i + 1.

The += operator is a shorthand that allows you to add whatever number you want to a variable. i += 1 would be equivalent to i = i + 1 (so same as i++) but you could also do i += 10 for example which would be equivalent to i = i + 10.

So ++ is useful if you are only adding 1 to a variable, and += is useful if you want to add some number other than 1 to a variable. But ultimately they are both simply shorthands for adding a number to another number.