Rounding a number up

Question

I want to round the up my total til two decimal places.

I have this:

    var updateTotal = function () {
      var people = parseInt($('#people').val());
      var bill = parseInt($('#bill').val());
      var tip = parseInt($('#tip').val());
      var billTip = bill + tip;




      $('#total').text(billTip / people);

and i've also found this snippet to help round up but i cant seem to get my head around how to implement it.

    var rounded = Math.round((10 / 3) * 100) / 100;

Thanks

@pattyd OP tag it using jquery but of course this is non sense here to tag it with jquery — A. Wolff, Jun 17 '13 at 15:23
@Jack ... my bad... didn't noticed the code was Jquery, I guess I just noticed the Tag... Sorry! — pattyd, Jun 18 '13 at 00:52

score 4 · Accepted Answer · answered Jun 17 '13 at 15:21

It's already implemented for you. Substitue (10 / 3) for your own variables. All it's doing is shifting the decimal place two places to the right (by multiplying by 100), rounding, then shifting it two left (by dividing by 100).

var rounded = Math.round((billTip / people) * 100) / 100;

score 3 · Answer 2 · answered Jun 17 '13 at 15:21

3

You can also use .toFixed

$('#total').text((billTip / people).toFixed(2));

answered Jun 17 '13 at 15:21

Adil Shaikh

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score 0 · Answer 3 · answered Jun 17 '13 at 15:22

0

I would use parseFloat on both your numbers, or else it will round to 00:

$('#total').text(parseFloat(billTip / people).toFixed(2));

answered Jun 17 '13 at 15:22

tymeJV

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score 0 · Answer 4 · edited Jun 17 '13 at 15:43

0

You can use ceil function Math.ceil(billTip)

and for refernce you can also visit below link

http://www.w3schools.com/jsref/jsref_ceil.asp

edited Jun 17 '13 at 15:43

Liam

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answered Jun 17 '13 at 15:26

Anil Gupta

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Rounding a number up

4 Answers4