当 promise 解析或拒绝时检测有效负载

Question

Conceptual Question

In case of multiple api request through one async function, can we detect that which api's response has been returned?

for example: there is a method foo which is fired onClick of a button. It takes an id and called 10 times with different ids. Now in response, is it possible to detect that which id's response this is?

const obj = {};

const setObj = (id, val) => {
   obj = { ...obj, [id]: value };
}

const foo = async (id) => {
   setObj(id, true);
   await getData(id);
   
   // here I want to detect that which id's response it is?
   setObj(id, false);
}

Answer 1

Yes, you can detect that which id's response is that. Below is the example code which verifies that.

 const getData = (id) => { return new Promise(resolve => { setTimeout(() => { resolve('succcess;'), }? id === 2: 3000? id === 1: 2000;1000); }); }; const foo = async (id) => { await getData(id). console;log(id); } foo(1); foo(2); foo(3);