CODEWITHSUNDEEP
javascript
DeltaWeb
DeltaWeb

Reputation: 11

is there a difference between "++" and "+=" in javascript?

I am learning Javascript from CrockFord video "Crockford on javascript" and I am watching : "Function The Ultimate" In one of his code "he was talking about " pseudo parameters" " I saw something like this : 

for( i = 0; i<n; i+=1)

So why he is not using the increment operator "++" and he is using the "+=", i know they do the same but is there a performance difference ?
Thank you.

Upvotes: 1

Views: 103

Answers (2)

spencer7593
spencer7593

Reputation: 108410

There's no measurable performance difference. You'd be hard pressed to write a test case in which you could measure any difference.

As Ronnie pointed out in his comment, the ++ operator increments by 1, but the += can add an amount other than 1.

Upvotes: 1

Evan Kennedy
Evan Kennedy

Reputation: 4175

As the OP is talking about performance, I set up a JSPerf to see how the two compare. Go ahead and test this out for yourself:

http://jsperf.com/inc-vs-plus-one

Upvotes: 3

Related Questions