js promise中如何取到[[PromiseValue]] ?

Question

Promise {[[PromiseStatus]]: "resolved",         [[PromiseValue]]: "http://dl.stream.qqmusic.qq.com/M8000046HRBd0FvKLm…C380C8F140044403EDC0124&guid=489780640&fromtag=30"        }有一个promise，现在取到的值为上述所示， 能不能直接从中取到 promisevalue的url？该promise由 QQMusic.getSong(1561).then(song => song.url) 获得这个程序是别人写的，再加上不太了解promise，所以请问下各位大哥可否直接取到？

Answer 1

var a = Promise.resolve('xx')

// Promise {[[PromiseStatus]]: "resolved", [[PromiseValue]]: "xx"}

a.then(function (result) { console.log(result) })