Idle Cola Factory Code

<!DOCTYPE html>
<head>
    <title>Idle Cola Factory</title>
    <script>
        var clicker = (
            colas:0,
            upgrades: {
                colas_machine:{
                    amount:0,
                    cost:10,
                    cps:1,
                    name:"Cola Machine"
                }
            }
        );
        function thing_clicked(thing){
            clicker.upgrades[thing].amount++
            update_upgrades();
        ]
        function thing_clicked(thing){
            if(clicker.upgrades[thing.cost <= clicker.colas]){
                clicker.colas-=clicker.upgrades[thing].cost;
                clicker.upgrades.amount[thing]++;
                clicker.upgrades[thing].cost += Math.round(clicker.upgrades[thing].cost*0.15)
                update_upgrades();
                 }
        }
        function update_upgrades(){
            document.querySelector("#upgrades").innerHTML="";
        }
        function updatecount(){
            setInterval(() =>{
            for{i in clicker.upgrades){
        clicker.colas+=clicker.upgrades[i].amount*clicker.upgrades[1].cps/20
            }
            document.querySelector("#colas").innerHTML = "You Have "+String(clicker.colas).split(".")[0]+ colas"
            },50];

        }
    </script>
</head>
<body onload="updatecount()">
    <h1 id="colas">You Have Made 0 Colas.</h1>
    <button onclick="
    clicker.colas++">Make 1 Cola</button>
    <div id="upgrades">

        </div>
</body>