JSFiddle - React, Tailwind, and code Playground

by BDG

HTML

<input id="a" value="foo">
<input id="b" value="bar">
<input id="c" value="bar">

JavaScript

var a = document.getElementById("a");
var b = document.getElementById("b");
var c = document.getElementById("c");

function update(listen, change) {
    listen.onchange = change;
}

update(a, function(){
    var b = document.getElementById("b");
    b.value = a.value;
});


update(b, function(){
    var c = document.getElementById("c");
    c.value = b.value;
});