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

I would keep it simple, and just match anything not allowed instead to join on:

str.split(/[^a-zA-Z-]+/g).filter(v=>v);

This matches all the gaps, no matter what non-allowed characters are in between. To get rid of the empty entry at the beginning and end, a simple filter for non-null values will do. See detailed explanation on regex101.

var str = ", ,, ford,    tempo, with,,, sunroof,, ,";

var result = str.split(/[^a-zA-Z-]+/g).filter(v=>v).join(',');

console.info(result);