Question

I have a number that I need to pull from my html:

<span>123,456.78</span>

How can I convert this string into a number that I can do math on?

var numberString = $('span').text();
var realNumber = Number(numberString); //returns NaN

A jQuery-only solution would be okay.

Answer 1

I’m not sure what realNumber does, but here’s how I’d convert that string into a number:

var numberString = $('span').text();
var amount = + numberString.replace(/,/g, '');

This removes the commas, then uses the + unary operator to convert the string to a number. In your example, the result is the number 123456.78.