How to round to at most 2 decimal places, if necessary?
Asked : Nov 17
Viewed : 35 times
I'd like to round at most 2 decimal places, but only if necessary.
Input:
10
1.7777777
9.1Output:
10
1.78
9.1How can I do this in JavaScript?
Nov 17
Use Math.round() :
Math.round(num * 100) / 100
Or to be more specific and to ensure things like 1.005 round correctly, use Number.EPSILON :
Math.round((num + Number.EPSILON) * 100) / 100answered Jan 16
Keep type as integer for later sorting or other math operations:
Math.round(1.7777777 * 100)/1001.78
// Round up!
Math.ceil(1.7777777 * 100)/100 1.78
// Round down!
Math.floor(1.7777777 * 100)/1001.77
Or convert to string:
(1.7777777).toFixed(2)"1.77"
answered Jan 16