formatCurrency Javascript Function
I use this javascript function all the time on web projects. Unfortunately I can’t remember where I got it from. Very handy though. It will take a number and format it as a currency so 123 becomes 123.00 or 123.456 becomes 123.46.
JavaScript:
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function formatCurrency(amount)
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{
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var i = parseFloat(amount);
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if(isNaN(i)) { i = 0.00; }
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var minus = ”;
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if(i <0) { minus = ‘-’; }
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i = Math.abs(i);
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i = parseInt((i + .005) * 100);
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i = i / 100;
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s = new String(i);
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if(s.indexOf(‘.’) <0) { s += ‘.00′; }
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if(s.indexOf(‘.’) == (s.length - 2)) { s += ‘0′; }
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s = minus + s;
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return s;
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}
To use it just call it in the onBlur attribute of your input field.
HTML:
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<input type=“text” name=“input_name” onBlur=“this.value=formatCurrency(this.value);”>
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