html - Javascript adding numbers with commas

I have four HTML fields, I grab their values and add them, in an equation that looks like this:

Total = Number(value1) + Number(value2) + Number(value3) + Number(value4)

Now some of the values might be equal to 1,078.00, I get NaN as a result. What should I do ?

Answer

Remove the commas, obviously:

parseFloat(value1.replace(/,/g,''))