搞懂JavaScript事件循环的相关内容

文章 2022-05-17 来自：开发者社区

彻底搞懂JavaScript事件循环（下）

（2）事件循环的流程其中libuv引擎中的事件循环分为 6 个阶段，它们会按照顺序反复运行。每当进入某一个阶段的时候，都会从对应的回调队列中取出函数去执行。当队列为空或者执行的回调函数数量到达系统设定的阈值，就会进入下一阶段。下面是Eventloop 事件循环的流程：整个流程分为六个阶段，当这六个...

文章 2022-05-17 来自：开发者社区

彻底搞懂JavaScript事件循环（上）

1. 异步执行原理（1）单线程的JavaScript我们知道，JavaScript是一种单线程语言，它主要用来与用户互动，以及操作DOM。JavaScript 有同步和异步的概念，这就解决了代码阻塞的问题：同步：如果在一个函数返回的时候，调用者就能够得到预期结果ÿ...

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更新时间 2022-07-27 12:11:16

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