JSFiddle - React, Tailwind, and code Playground
HTML
<span id="text"></span>
JavaScript
var mystring = "this,is,a,test"
console.log(mystring.replace(/,/g , ":"));
document.getElementById("text").innerHTML =mystring;
<span id="text"></span>
var mystring = "this,is,a,test"
console.log(mystring.replace(/,/g , ":"));
document.getElementById("text").innerHTML =mystring;