js WritableStream
index.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<button id="generate">生成</button>
<button id="abort">终止</button>
<textarea id="editor" rows="20"></textarea>
<div id="previewer"></div>
<script type="module">
let abort = null;
async function generate() {
if (abort) {
abort = null;
}
abort = new AbortController();
const signal = abort.signal;
const output = document.getElementById("editor");
const prompt = "请回答问题：xxx";
const options = {
body: `{"prompt": "${prompt}"}`,
headers: { "Content-Type": "application/json" },
method: "POST",
signal: signal,
};
const response = await fetch("/chat", options);
const decoderStream = new TextDecoderStream("utf-8");
const writer = new WritableStream({
write(chunk) {
output.innerHTML += chunk;
output.scrollTop = output.scrollHeight;
}
});
response.body
.pipeThrough(decoderStream)
.pipeTo(writer)
.catch((error) => {
console.log(`Something went wrong with the stream: ${error}`);
});
}
const generateElement = document.getElementById("generate");
generateElement.onclick = () => {
generate();
}
const abortElement = document.getElementById("abort");
abortElement.onclick = () => {
if (abort) {
abort.abort();
}
}
</script>
</body>
</html>
分类:
js
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