最多精确到小数点后2位(必要时才算)

Question

I'd like to round at most 2 decimal places, but only if necessary.

Input:

10
1.7777777
9.1

Output:

10
1.78
9.1

How can I do this in JavaScript?

转载于:https://stackoverflow.com/questions/11832914/round-to-at-most-2-decimal-places-only-if-necessary

Answer 1

Use Math.round(num * 100) / 100