Remove specific characters from a string in Javascript

Question

I am creating a form to lookup the details of a support request in our call logging system. Call references are assigned a number like `F0123456` which is what the user would enter, but the record in the database would be `123456`. I have the following code for collecting the data from the form before submitting it with `jQuery` ajax. How would I strip out the leading `F0` from the string if it exists? ``` $('#submit').click(function () { var rnum = $('input[name=rnum]'); var uname = $('input[name=uname]'); var url = 'rnum=' + rnum.val() + '&uname=' + uname.val(); ```

Accepted Answer

Simply replace it with nothing:

```
var string = 'F0123456'; // just an example
string.replace(/^F0+/i, ''); '123456'
```

Remove specific characters from a string in Javascript

Solution

Problem