为什么 Promise 设计只返回一个结果？

Question

 new Promise((resolve, reject) => { resolve('result1', 'resolve2'); }).then((result1, result2) => { console.info(result1, result2); });

Why Promise returns only one result in JavaScript like in the above code?

I'm sorry for my unclearly describe. I'm know how to return an object or an array value in resolve. I'm just curious why Promise design to return only on result.

Answer 1

Promise always returns one value. But you can do a trick to get as two using Array destructing . Pass an array or object to the resolve/reject function and using destructing get them as separate variables.

 new Promise((resolve, reject) => { resolve( ['result1', 'resolve2'] ); }).then( ( [result1, result2] ) => { console.info(result1, result2); });