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图解JS执行机制

 6 years ago
source link: https://juejin.im/post/5b879a9f6fb9a01a0f24a5e1
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大致流程 我们可以看出： js代码分为同步任务和异步任务。 同步任务会进入主线程，异步任务会进入Event Table（事件表），当事件表中的异步任务完成后会在Event Queue（事件队列）中注册回调函数。 主线程任务全部完成后，才会完成Event

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