The Asynchronous Evolution of JavaScript
This article explores the evolution of JavaScript's asynchronous capabilities, tracing its journey from synchronous execution to modern patterns like promises and async/await.
本文围绕 JavaScript 的异步发展历程进行探讨,看一下它是如何改变我们编写和读取代码的方式。我们的探讨将从早期 Web 开发开始,到现代异步模式。
JavaScript 作为编程语言具有两个主要特征,这两个特征对我们理解代码如何工作很重要。一个是 同步 特性,这意味着代码逐行运行,另一个是 单线程 ,任何时候都只执行一个命令。
随着语言的发展,需要异步执行的模块出现在应用场景中。开发人员在解决更复杂的算法和数据流时尝试了不同的方法,从而导致围绕它们的新接口和模式的出现。
例如,让我们检查一个网络请求。
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