Javascript to format number as currency

Question

I have the following code.

<select id="cage_options"> <option>Please select</option> <option value="2,63330">option1</option> <option value="3,13300">option2</option> <option value="4,2000.00">option3</option> </select> <input id="cage_labor_estimate" disabled> <script> function format(n) { return n.toFixed(2).replace(/(\d)(?=(\d{3})+\.)/g, "$1,"); } document.getElementById("cage_options").addEventListener("change", cageOptionFunction); function cageOptionFunction() { select=document.getElementById('cage_options').value.split(','); cage_option = select[1]; document.getElementById("cage_labor_estimate").value = format(cage_option); } </script>

I am trying to format the output in the disabled input box in a current format but get the following error:

TypeError: n.toFixed is not a function. (In 'n.toFixed(2)', 'n.toFixed' is undefined)

Can anyone help?

Thanks,

John

because you have a string, not a number.

epascarello
– epascarello

2016-09-22 11:05:19 +00:00
Commented Sep 22, 2016 at 11:05 — epascarello
– epascarello, Commented Sep 22, 2016 at 11:05

epascarello · Accepted Answer · 2016-09-22 11:07:37Z

You have a string and a string does not have .toFixed(). So need to convert that string to be a number.

cage_option = Number(select[1]);

or

cage_option = parseFloat(select[1]);

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