how to round a number to 2 decimal place? javascript

Question

Im trying to round a number to 2 decimal place. I have tried the following but not having any luck? Can somebody please help me and tell me where im going wrong??

var winPercentage = totalWins/(totalWins+totalLost)*100;
winPercentage.toFixed(2);
document.getElementById('win-percentage').innerHTML = winPercentage + " %";

i search and tried this but to be honest i have no idea what it is?

var winPercentage = totalWins/(totalWins+totalLost)*100;
expr {double(round(100*winPercentage))/100}
document.getElementById('win-percentage').innerHTML = winPercentage + " %";

Can you give an example of input and and expected output because your code is correct for what you have asked. — roshan, Mar 04 '15 at 20:49
I cant seem to get it to work? its displaying numbers like 48.38709677419355 % When i would like 48.38 — heady12, Mar 04 '15 at 20:53

score 1 · Accepted Answer · edited Apr 24 '15 at 18:50

1

Try to use the following syntax instead and alter it to your needs

var num = 5.1;

num.toFixed(2); //will become 5.10

edited Apr 24 '15 at 18:50

Mureinik

252,575
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answered Mar 04 '15 at 20:49

natali

90
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10

var winPercentage = totalWins/(totalWins+totalLost)*100;winPercentage.toFixed(2); document.getElementById('win-percentage').innerHTML = winPercentage + " %"; – heady12 Mar 04 '15 at 20:52
var winPercentage = totalWins/(totalWins+totalLost)*100;winPercentage.toFixed(2); document.getElementById('win-percentage').innerHTML = winPercentage + " %"; – heady12 Mar 04 '15 at 20:52

score 0 · Answer 2 · answered Mar 04 '15 at 20:50

0

You had the right idea with toFixed(2). The problem is that it returns the formatted number, it does not alter the variable it was called on. In other words, you just need to assign it back the the variable you were using:

winPercentage = winPercentage.toFixed(2);

answered Mar 04 '15 at 20:50

Mureinik

252,575
45
248
283

Thank you very much, this has been bugging me for a while : ) thanks – heady12 Mar 04 '15 at 20:56

how to round a number to 2 decimal place? javascript

2 Answers2