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Start your free trialHeather Gray
6,225 PointsIs 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
Treehouse Moderator 27,696 PointsI 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.
Piotr Manczak
Front End Web Development Techdegree Graduate 29,363 PointsIt's quicker and it's cooler, I think
Heather Gray
6,225 PointsThanks 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! :)
Piotr Manczak
Front End Web Development Techdegree Graduate 29,363 PointsI meant that it's quicker to type.
Heather Gray
6,225 PointsOK. So I think you are agreeing with me. i++ is better! :)
Heather Gray
6,225 PointsHeather Gray
6,225 PointsThanks Rich. I appreciate the SO thread
Rich Donnellan
Treehouse Moderator 27,696 PointsRich Donnellan
Treehouse Moderator 27,696 PointsYou're welcome! It was a great question.