forked from mystiq/hydrogen-web
51 lines
2.5 KiB
HTML
51 lines
2.5 KiB
HTML
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="utf-8">
|
|
</head>
|
|
<body>
|
|
<iframe id="iframe" sandbox="allow-scripts allow-downloads allow-downloads-without-user-activation"></iframe>
|
|
<script type="text/javascript">
|
|
const iframeHtml = `
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="utf-8">
|
|
</head>
|
|
<body>
|
|
<button id="download">Download</button>
|
|
<a id="link" href="#">Link to progamatically click</a>
|
|
<script type="text/javascript">
|
|
var link = document.getElementById("link");
|
|
var button = document.getElementById("download");
|
|
async function download(blob, filename) {
|
|
const slice = blob.slice(0, 1);
|
|
const reader = new FileReader();
|
|
reader.readAsArrayBuffer(slice);
|
|
const buffer = await new Promise((resolve, reject) => {
|
|
reader.addEventListener("abort", () => reject(new Error("aborted")));
|
|
reader.addEventListener("error", e => reject(e.error));
|
|
reader.addEventListener("load", e => resolve(e.target.result));
|
|
});
|
|
document.body.appendChild(document.createTextNode("buffer: " + new Uint8Array(buffer)[0] + " (" + buffer.byteLength + ")"));
|
|
var url = URL.createObjectURL(blob);
|
|
link.href = url;
|
|
link.download = filename;
|
|
link.innerText = url;
|
|
link.click();
|
|
URL.revokeObjectURL(url);
|
|
}
|
|
button.addEventListener("click", async function(event) {
|
|
try {
|
|
await download(new Blob(["a message from the iframe"], {type: "text/plain"}), "hello world.txt");
|
|
} catch (err) {
|
|
document.body.appendChild(document.createTextNode(err.toString()));
|
|
}
|
|
});
|
|
</${"script"}>
|
|
</body>
|
|
</html>`;
|
|
document.getElementById("iframe").setAttribute("srcdoc", iframeHtml);
|
|
</script>
|
|
</body>
|
|
</html>
|