修改Header

代码

/**
 * 示例为请求 https://demo.aliyundoc.com/index.html, 并修改响应头后返给客户端
 * 测试时请将 someHost 和 url 替换为您自己的地址
 */
const someHost = "https://demo.aliyundoc.com";
const url = someHost + "/index.html";

addEventListener('fetch', event => {
  event.respondWith(handleRequest(event.request));
});

async function handleRequest(request) {
  const response = await fetch(url);

  // 仅复制返回内容的 body
  const newResponse = new Response(response.body, response);

  // 自定义增加 header
  newResponse.headers.append("custom-ER-add", "ER header");

  // 自定义删减 header
  newResponse.headers.delete("custom-ER-delete");
  newResponse.headers.delete("custom2-ER-delete");

  // 自定义修改header
  newResponse.headers.set("custom-ER-reset", "ER header");

  return newResponse;
}

结果

ER获取客户端请求的内容并对header增删改查后返回给客户端：