document.querySelector(".btn").addEventListener("click", () => {
    let p = [document.querySelector("[name='name']").value, document.querySelector("[name='text']").value];
    [...document.querySelectorAll(".put")].forEach((elm, index) => {
        elm.innerText = p[index];
    });
    document.querySelector("#box2").style.display = "none";
    document.querySelector("#data").insertAdjacentHTML("beforeend", `<button class="btn2" type="button">非同期送信</button>`);
    document.querySelector(".btn2").addEventListener("click", async () => {
        //submit code
        let url = "./submit.php";
        let data = (() => {
            return ([...document.querySelectorAll(".put")].map((elm, index) => {
                return "test" + index + "=" + elm.innerText;
            })).join("&");
        })();
        const options = {
            method: 'POST',
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded',
                "Content-Length": data.length,
                'Accept': 'application/json'
            },
            body: data //JSON.stringify(data)
        };
        await fetch(url, options).then(response =>
            response.json()
        ).then(resultdata => {
            document.getElementById("view").insertAdjacentHTML("beforeend", resultdata.test0 + "," + resultdata.test1);
        }).catch(error => {
            console.log(error);
        });
    });
});


function imgchg(imagename){
    document.body.setAttribute("style","background-image: url(./assets/images/" + imagename + ".jpg");
}