trim to 2 decimals
Question
I have:
onclick="document.getElementById('field1').value =
Math.round((parseFloat(document.getElementById('field2').value,2)*100))/100 +
Math.round((parseFloat(document.getElementById('field3').value,2)*100))/100;"
Most numbers round ok to 2 decimal points which is what I need.
However, with an example like
onclick="document.getElementById('field1').value =
Math.round((parseFloat(document.getElementById('21.29').value,2)*100))/100 +
Math.round((parseFloat(document.getElementById('54.70').value,2)*100))/100;"
Field 1 is returning 75.99000000000001 How can I trim to 75.99 consistently?
5 answers
solution1
53 2011-06-29 18:23:07
var num = 5 / 6;
var display = num.toFixed(2)
num outputs: 0.8333333333333334
display outputs: "0.83"
solution2
7 2011-06-29 18:22:44
How about this:
parseFloat(document.getElementById('21.29').toFixed(2));
The toFixed method should take care of the rounding nicely for you.
solution3
6 2011-06-29 18:20:52
Use the method toFixed(2) to fix it at 2 decimal places:
(Math.round((parseFloat(document.getElementById('21.29').value,2)*100))/100 +
Math.round((parseFloat(document.getElementById('54.70').value,2)*100))/100).toFixed(2);
solution4
2 2019-02-22 12:46:40
I had a similar issue - where I do not wanted to round the value but trim upto 2 decimals
I got the perfect solution for by writing this function and using where ever needed to trim upto 2 decimals
function upto2Decimal(num) {
if (num > 0)
return Math.floor(num * 100) / 100;
else
return Math.ceil(num * 100) / 100;
}
if you call
upto2Decimal(2.3699) or upto2Decimal(-2.3699)
// returns 2.36 or -2.36
check this solution using your JS console of the browser
solution5
0 2020-11-03 23:23:24
You can use:
function myFunction() { var num = "-54.987656"; var roundedValue = roundMethod(num,5); document.getElementById("demo").innerHTML = roundedValue; } function roundMethod(numberVal, roundLimit) // This method will not add any additional 0, if decimal places are less than the round limit { var isDecimal = numberVal.indexOf(".");= -1. if(isDecimal) { if(numberVal.split(".")[1].length > roundLimit) { return parseFloat(numberVal).toFixed(roundLimit);toString(); }else { return numberVal; } }else { return numberVal; } }
<html> <body> <p>Click the button to display the fixed number.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> </body> </html>
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