const username="entropy"; const password="fuckoff"; let auth=`Basic ${btoa(`${username}:${password}`)}` let headers={ 'Content-type': 'application/json', "Authorization": auth } loadButton.addEventListener("click", async function(){ let response = await fetch("https://baas.kinvey.com/appdata/kid_rkzic96iS/books",{ method:"GET", headers: headers}); let books = await response.json(); console.log(books) })