for(var elem in elements){
   var divElement = "element" + elements[elem].elementName ;
   document.getElementById(divElement).innerHTML = "Kake" ;
}

for(var elem in elements){
   var divElement = "elementElement1" ;
   document.getElementById(divElement).innerHTML = "element" + elements[elem].elementName ;
}

elements[elem].elementName

for (var elem of elements) {
  var divElement = "element" + elem.elementName;
  document.getElementById(divElement).innerHTML = "Kake";
}

async function drawcomputers() {
    const computers = await loadcomputers();

    for(var comput in computers){
                
        var addinElement = "divcomputers" + computers[comput].Company;
        var tmpdiv = document.getElementById(addinElement) ;
        //var tmpdiv = document.getElementById("divcomputersJHS") ; //Bytter jeg linjen over med denne fungerer det.
        
        tmpdiv.innerHTML = computers[comput].Company; // Denne skriver ut riktig navn på diven ;
}

function convertStringToHex(str) {
    const arr = [];
    for (let i = 0; i < str.length; i++) {
        arr[i] = ("00" + str.charCodeAt(i).toString(16)).slice(-4);
    }
    return "\\u" + arr.join("\\u");
}

async function drawcomputers() {
    const computers = await loadcomputers();

    for (let comput of computers) {
        console.log("Updating", comput.Company);
        const generatedName = "divcomputers" + comput.Company;
        const hardcodedName = "divcomputersJHS";
        const divFromGeneratedName = document.getElementById(generatedName);
        const divFromHardcodedName = document.getElementById(hardcodedName);
        console.log("generated name as hex:", convertStringToHex(generatedName));
        console.log("hardcoded name as hex:", convertStringToHex(hardcodedName));
        console.log("hardcoded and generated is the same?", generatedName === hardcodedName);
        console.log("div from generated name", divFromGeneratedName);
        console.log("div from hardcoded name", divFromHardcodedName);
        divFromGeneratedName.innerHTML = comput.Company; // Denne skriver ut riktig navn på diven ;
    }
}

Updating JHS
generated name as hex: \u0064\u0069\u0076\u0063\u006f\u006d\u0070\u0075\u0074\u0065\u0072\u0073\u004a\u0048\u0053
hardcoded name as hex: \u0064\u0069\u0076\u0063\u006f\u006d\u0070\u0075\u0074\u0065\u0072\u0073\u004a\u0048\u0053
hardcoded and generated is the same? true
div from generated name <div id=​"divcomputersJHS">​JHS​</div>​
div from hardcoded name <div id=​"divcomputersJHS">​JHS​</div>​