利用内置 AI 生成摘要

if ('Summarizer' in self) {
  // The Summarizer API is supported.
}

const availability = await Summarizer.availability();

// Proceed to request batch or streaming summarization
const summarizer = await Summarizer.create({
  monitor(m) {
    m.addEventListener('downloadprogress', (e) => {
      console.log(`Downloaded ${e.loaded * 100}%`);
    });
  }
});

const options = {
  sharedContext: 'This is a scientific article',
  type: 'key-points',
  format: 'markdown',
  length: 'medium',
  monitor(m) {
    m.addEventListener('downloadprogress', (e) => {
      console.log(`Downloaded ${e.loaded * 100}%`);
    });
  }
};

const availability = await Summarizer.availability();
if (availability === 'unavailable') {
  // The Summarizer API isn't usable.
  return;
}

// Check for user activation before creating the summarizer
if (navigator.userActivation.isActive) {
  const summarizer = await Summarizer.create(options);
}

const longText = document.querySelector('article').innerHTML;
const summary = await summarizer.summarize(longText, {
  context: 'This article is intended for a tech-savvy audience.',
});

const longText = document.querySelector('article').innerHTML;
const stream = summarizer.summarizeStreaming(longText, {
  context: 'This article is intended for junior developers.',
});
for await (const chunk of stream) {
  console.log(chunk);
}

<!--
  The hosting site at https://main.example.com can grant a cross-origin iframe
  at https://cross-origin.example.com/ access to the Summarizer API by
  setting the `allow="summarizer"` attribute.
-->
<iframe src="https://cross-origin.example.com/" allow="summarizer"></iframe>