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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
Posted by 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 27,696 Points
Rich Donnellan
Rich Donnellan
Treehouse Moderator 27,696 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
Heather Gray
Heather Gray
6,225 Points

Thanks Rich. I appreciate the SO thread

Heather Gray
Heather Gray
6,225 Points
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! :)

Heather Gray
Heather Gray
6,225 Points
Heather Gray
Heather Gray
6,225 Points

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