Replace Multiple String at Once With Regex in Javascript

Question

I tried this : Replace multiple strings at once And this : javascript replace globally with array how ever they are not working.

Can I do similar to this (its PHP):

$a = array('a','o','e');
$b = array('1','2','3');
str_replace($a,$b,'stackoverflow');

This result will be :

st1ck2v3rfl2w

I want to use regex at the same time. How can I do that ? Thank you.

Answer 1

var str = "I have a cat, a dog, and a goat.";
var mapObj = {
   cat:"dog",
   dog:"goat",
   goat:"cat"
};
str = str.replace(/cat|dog|goat/gi, function(matched){
  return mapObj[matched];
});

Check fiddle