JSFiddle - React, Tailwind, and code Playground

HTML

<button id="btn1">BTN1</button>
<button id="btn2">BTN2</button>

JavaScript

var action = 1;

function clicked() {
   if ( action == 1 ) {
        // Do this code whenever #btn1 is clicked
        $("body").css("background", "honeydew");
        action = 2;
    } else {
        // Do this code when #btn2 is clicked after #btn1
        $("body").css("background", "beige");
        action = 1;
    }
}

$('document').ready(function () {
    $('#btn1').click(function(){
        action = 1;
        clicked();
    });
    $('#btn2').click(function(){
        if(action == 2){
            clicked();
        } else {
            // Do this when #btn2 is clicked on it's own
            alert('hi there');
        }
    });
});