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myPromise #23

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18 changes: 18 additions & 0 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -10,12 +10,20 @@ function myPromise(constructor) {
function resolve(value) {

// TODO resolve如何改变状态及返回结果
if(self.status === "pending") {
self.value = value;
self.status = "resolved";
}

}

function reject(reason) {

// TODO reject如何改变状态及返回结果
if(self.status === "pending") {
self.reason = reason;
self.status = "rejected";
}

}

Expand All @@ -36,6 +44,16 @@ function myPromise(constructor) {
myPromise.prototype.then = function (onFullfilled, onRejected) {

//TODO then如何实现
let self = this;
switch(self.status) {
case "resolved":
onFullfilled(self.value);
break;
case "rejected":
onRejected(self.reason);
break;
default:
}

}
module.exports = myPromise