function sendData(naam, score) { const request = ( url, params = {}) => { url += '?' + ( new URLSearchParams( params ) ).toString(); fetch( url ); }; const get = ( url, params ) => request( url, params); get('https://oege.ie.hva.nl/~hossan/postData.php', { name: naam, score: score } ); } function getData(){ // Fetch data from the database, put it in an array, and log it to the console return fetch ('https://oege.ie.hva.nl/~hossan/getData.php') // Add return here .then(response => response.json()) .then(data => { requesteddata = data; }); }