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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <!--
 * @Author: OBKoro1
 * @Github: https://github.com/OBKoro1
 * @Description: web worker博客演示denmo,博客链接:https://juejin.im/user/58714f0eb123db4a2eb95372/posts
 -->
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
  </head>

  <body>
    <div>打开控制台看输出</div>
  </body>
</html>

            
          
!
            
              class webWorker {
  /**
   * @description: webworker的简单封装
   * @param {String} data js的url/script的id或class
   * @param {Object} type 默认值给出,同页面的web worker传个’worker‘即可
   * @return: WebWorker 对象
   */
  constructor(data, type = "url") {
    this.worker = null;
    this.workerInit(data, type);
  }
  workerInit(data, type) {
    if (type === "url") {
      // 默认是以url脚本形式的worker线程
      // 此时的data应该是一个url链接
      this.worker = new Worker(data);
    } else {
      // 以字符串形式创建worker线程,把代码字符串,转成二进制对象,生成 URL,加载URL
      const blob = new Blob([data]);
      const url = window.URL.createObjectURL(blob);
      this.worker = new Worker(url); // 加载
    }
  }
  /**
   * @description: 给worker线程发送消息
   * @param {*} data 要发送的数据
   */
  postMessage(data) {
    return this.worker.postMessage(data);
  }
  /**
   * @description: worker线程发送给主进程的数据
   * @param {Function} fn 把数据通过回调的形式传出去
   */
  onmessage(fn) {
    this.worker.onmessage = msg => {
      return fn(msg.data);
    };
  }
  // 主线程关闭worker线程
  closeWorker() {
    return this.worker.terminate();
  }
  /**
   * @description: 主线程监听worker线程的错误信息
   * @param {Function} fn 错误信息回调
   */
  errMsg(fn) {
    this.worker.onerror = e => {
      return fn(e);
    };
  }
}

const data = `
      // worker线程加载脚本 TODO: Worker 线程无法读取本地文件,加载的脚本必须来自网络
      // importScripts('hello1.js', 'http~.js');
      
      // 监听主线程传过来的信息
      self.onmessage = e => {
        console.log('主线程传来的信息:', e.data);
        // do something
      };
      
      // 发送信息给主线程
      self.postMessage('来自worker线程');
      
      // 关闭worker线程
      function closeSon() {
        return self.close();
      }`;

const worker = new webWorker(data, "script");
worker.onmessage(data => {
  console.log("父进程接收的数据:", data);
});
worker.postMessage("主进程传给worker线程");
worker.errMsg(msg => {
  console.log("worker线程报错:", msg);
});

            
          
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