Node.js 官方关于非阻塞的文档中,addtional javascript 是什么含义,有没有实例?
发布于 3 年前 作者 sdutwsl 1546 次浏览 来自 问答

Blocking is when the execution of additional JavaScript in the Node.js process must wait until a non-JavaScript operation completes. This happens because the event loop is unable to continue running JavaScript while a blocking operation is occurring.

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nodejs中还真没啥阻塞api, 用浏览器举例子吧

alert('')  // 这是 non-JavaScript operation, 用户不点确定, 不会执行下一行代码
console.log('hello world')   // 这是 additional JavaScript, 即: 未来/后面即将要执行的js

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