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<!DOCTYPE html>
<meta charset="utf-8">
<title>Streaming element with backpressure demo</title>
<script src="transforms/transform-stream-polyfill.js"></script>
<script src="transforms/text-encode-transform.js"></script>
<script src="tags/streaming-element-backpressure.js"></script>
<script src="resources/highlight.pack.js"></script>
<script src="resources/web-animations.min.js"></script>
<script src="tags/view-source.js"></script>
<link rel=stylesheet href="resources/common.css">
<link rel=stylesheet href="resources/jank-meter.css">
<link rel=stylesheet href="resources/commits.css">
<h1>Streaming element with backpressure demo</h1>
<a id=back-to-index href=index.html>Back to demo index</a>
<view-source></view-source>
<div id=buttons>
<button id="load">Load HTML stream, applying backpressure</button>
<button id="reset">Reset</button>
</div>
<div id=jank-meter>JANK METER</div>
<streaming-element-backpressure id=target></streaming-element-backpressure>
<script>
'use strict';
const loadButton = document.querySelector('#load');
const resetButton = document.querySelector('#reset');
const targetDiv = document.querySelector('#target');
loadButton.onclick = async () => {
loadButton.disabled = true;
fetchDirectlyIntoDOM();
};
// BEGIN SOURCE TO VIEW
async function fetchDirectlyIntoDOM() {
const response = await fetch('data/commits.include',
{
mode: 'same-origin',
headers: {
'Cache-Control': 'no-cache, no-store'
}
});
await response.body
.pipeThrough(new TextDecoder())
.pipeTo(targetDiv.writable);
}
// END SOURCE TO VIEW
resetButton.onclick = () => {
targetDiv.reset();
loadButton.disabled = false;
};
</script>
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