I hope this question isn't too basic.
I have a strings like
var str = "$1.00, £2.00, €3.00"; var newStr = str.replace(/[\$£€]/g, ''); alert(newStr);
As you can see, you can use a regex expression to remove all the symbols.
It currently replaces $, £, and € - but if there are others you can add each individual symbol between the [square brackets]