JSFiddle - React, Tailwind, and code Playground

JavaScript

function str_replace(replace, by, str) {
     for (var i=0; i<replace.length; i++) {
         str = str.replace(new RegExp(replace[i], "g"), by[i]);
     }
     return str;
 }
 
var input = "hi, my name is Rick.";
 
document.write(str_replace(new Array("hi", "\[.]"), new Array("hello", "\!"), input));