David Huang

icon location My name is David Huang, I am a college student. I enjoy reading and watching movies.

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第 10 题：简单手写实现promise

附加需求: 1. catch完允许恢复 2. then/catch的回调允许返回Promise ``` javascript let isThenable = x => !!(x!==undefined && x.then); let runThenable = (func, arg) => isThenable(arg) ? arg.then(func) : func(arg); class MyPromise{ constructor(f){ this.succ_que...