Question

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JavaScript: formatting number with exactly two decimals

How do I limit the following jQuery return to 2 decimal places?

$("#diskamountUnit").val('$' + $("#disk").slider("value") * 1.60);

I figure I’ve got to throw toFixed(2) somewhere into there, but I can’t seem to get the ordering right or something.

Answer 1

You could use a variable to make the calculation and use toFixed when you set the #diskamountUnit element value:

var amount = $("#disk").slider("value") * 1.60;
$("#diskamountUnit").val('$' + amount.toFixed(2));

You can also do that in one step, in the val method call but IMO the first way is more readable:

$("#diskamountUnit").val('$' + ($("#disk").slider("value") * 1.60).toFixed(2));