Here is what I'm trying to do.
Right now I can parse a number by adding commas automatically, however, when I try to type a negative it goes away.
Here is the current code that I'm using to parse the number:
$(this).val(function(index, value) {
return value
.replace(/\D/g, "")
.replace(/\B(?=(\d{3})+(?!\d))/g, ",");
});
How do I keep the number negative value?
\D matches anything that isn't a decimal digit, so you're removing the minus sign. Use [^-\d] instead to remove anything that isn't a digit or minus sign.
function add_commas(value) {
return value
.replace(/[^-\d]/g, "")
.replace(/\B(?=(\d{3})+(?!\d))/g, ",");
}
console.log(add_commas('1234567'));
console.log(add_commas('-1234567'));
console.log(add_commas('-123,4X567'));Caveat: this won't work correctly if they put a - in the middle of the number, since it will be left in the number.