I have a string as : A123456789BC
And I would like the output to be : A-123-456-789-BC for display purposes.
I am using a regex in replace function but so far it only does : A-123-456-789BC
This is what I have -
String.replace(/(\d{3})/g, (found) => {return '-' + found});
Basically if I have an alphanumeric string as above, I would like the numbers to be grouped in 3 and add separators(-) to their start and end.
Would appreciate any help to achieve this.
Add a match for the ending and you should have it. So match 3 numbers or two characters at the end.
console.log('A123456789BC'.replace(/(\d{3}|[A-Z]+$)/g, '-$1'))I would update your regular expression like this:
String.replace(/(\d{3}|(?<=\d{3})\D)/g, (found) => {return '-' + found})
This will not only add a hyphen before a group of 3 digits, but also before a non-digit character following a group of 3 digits.
console.log('A123456789BC'.replace(/(\d{3}|(?<=\d{3})\D)/g, (found) => {return '-' + found}))