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JavaScript JavaScript and the DOM (Retiring) Responding to User Interaction Adding an Event Listener

Heather Gray
Heather Gray
6,225 Points

Is there a reason the instructors use += 1 instead of the increment operator (++) in loops?

Since I started with languages like C++ and Java, I use the ++ post increment operator by nature in all languages that allow it whenever I need to increment by 1 at a time. (I do the same with post-decrement -- where needed)

for(let i = 0; i < 10; i++)

I notice instructors using i += 1 instead. Is there any reason to avoid ++ and -- in JS?

3 Answers

Rich Donnellan
MOD
Rich Donnellan
Treehouse Moderator 25,764 Points

I can't say for certain why Guil Hernandez chose this particular syntax over the other. Obviously, both do the same, so it just may be a personal preference. Maybe he can elaborate.

Check out this SO thread for some possible reasons for this particular usage.

Heather Gray
Heather Gray
6,225 Points

Thanks Rich. I appreciate the SO thread

It's quicker and it's cooler, I think

Heather Gray
Heather Gray
6,225 Points

Thanks for the answer. Do you mean +=1 runs more quickly than the increment operator ++? Because if you mean typing faster, I think it's faster to type i++ than i += 1! :)

I meant that it's quicker to type.

Heather Gray
Heather Gray
6,225 Points

OK. So I think you are agreeing with me. i++ is better! :)