Web Worker 简单使用

前端小趴菜、2024-09-21 0:09

通信方法：

(1) 发送消息

主线程：worker.postMessage()

子线程：self.postMessage()

(2) 接收消息

主线程：worker.onmessage()

子线程：self.onmessage()

(3) 监听异常

主线程：worker.onerror()

子线程：self.onerror()

(4) 销毁方法

主线程：worker.terminate()

子线程：self.close()

(5) 加载脚本 (worker内部加载其他脚本)

importScripts('script1', 'script2')

javascript 复制代码

// 主进程
<template>
  <div class="menu-contain card">
    <el-button type="primary" @click="handlerSendMsg">Send</el-button>
  </div>
</template>

<script setup lang="ts">
import { ref } from 'vue';

const worker = ref()

worker.value = new Worker(new URL('@/workers/handlerArrWorker.ts', import.meta.url))

worker.value.onmessage = (res: any) => {
  console.log(res, 'res')
}

const handlerSendMsg = () => {
  worker.value.postMessage({msg: 'start'})

  console.log(worker.value, 'worker.value')
}
</script>

<style scoped lang="scss">

</style>

javascript 复制代码

// 子进程
self.onmessage = () => {
    let list = []
    for (let index = 0; index < 1000000; index++) {
        list.push(Date.now())
    }

    self.postMessage(list)
}