Javascript Split Space Delimited String and Trim Extra Commas and Spaces

Question

I need to split a keyword string and turn it into a comma delimited string. However, I need to get rid of extra spaces and any commas that the user has already input.

Answer 1

You will need a regular expression in both cases. You could split and join the string:

str = str.split(/[\s,]+/).join();

This splits on and consumes any consecutive white spaces and commas. Similarly, you could just match and replace these characters:

str = str.replace(/[\s,]+/g, ',');

For the trailing comma, just append one

str = .... + ',';

If you have preceding and trailing white spaces, you should remove those first.

Reference: .split, .replace, Regular Expressions