JSFiddle - React, Tailwind, and code Playground

by learningloop

HTML

<button onclick="setIDVal1()">Set ID Val 1</button>
<button onclick="setIDVal2()">Set ID Val 2</button>
<button onclick="getIDVal()">Get ID Val</button>

JavaScript

var id;
function setIDVal1(){
  var id=10;
}

function setIDVal2(){
  id=101;    
}

function getIDVal(){
    alert(id);
}