Remove white spaces from string between comma and any letter

Question

I use RegExp and \"string\".match very rarely so I\'m not so sure how to use them for some little bit complex things.Here\'s what I would like to do and don\'t know how to d

Answer 1

var str = " I would like to know how to use RegExp    ,    string.match    and  string.replace";

console.log(
  str
);
console.log(
  str
  //Replace double space with single
  .replace(/  +/ig, ' ')
);
console.log(
  str
  //Replace double space with single
  .replace(/  +/ig, ' ')
  //Replace any amount of whitespace before or after a `,` to nothing
  .replace(/\s*,\s*/ig, ',')
);