jquery formating decimal places problem

Hi.
I'm using variables of prices and when using one on its own the formatting (decimal places) is fine like when I set the variable: var unitcore = (1*(unitcost)).toFixed(2);

but when I try and do a calculation I just can't get the formating back: trying this doesn't work: $("#tblunit").html(unitcore - disc).toFixed(2); and without the Fixed (2) doesn't work either.

Any ideas please clever people?

Thanks
swordfishsoupAsked:
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Steve KrileCommented:
In my opinion, it's "better" to do all your calculations without regard to formatting, then, change the result as you like.

So, this has always been a safer approach for me:

var result = unitcore - disc;
result = result.toFixed(2);

$("#tblunit").html(result);

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