download a new file

const formV = document.querySelector("input");
const btn = document.querySelector("button");

btn.addEventListener("click", (e) => {
    e.preventDefault();
    filefetch(formV.value);
});

function filefetch(url) {
    fetch(url)
        .then((resp) => resp.blob())
        .then((file) => {
            let tURL = URL.createObjectURL(file);
            let aTag = document.createElement("a");
            aTag.href = tURL;
            aTag.download = "file name";
            document.body.appendChild(aTag);
            aTag.click();
            aTag.remove();
            URL.revokeObjectURL(tURL);
        });
}