maotube/public/upload/script.js

document.getElementById("upload-form").addEventListener("submit", event => {
    event.preventDefault();

    const data = new FormData(event.target);

    fetch("/api/upload-video", {
        method: "POST",
        body: data,
    })
    .then(response => response.json())
    .then(response => {
        if (!response.ok) {
            error(response.error);
            return;
        }

        location.href = "/queue";
    })
    .catch(err => {
        error("failed to upload video");
    });
});