小编CRI*_*RIS的帖子

在我的chrome扩展项目中,我使用ES6承诺从后台页面获取XHR的结果并将其发送到内容,但我得到的内容undefined值response.XHR工作正常,它返回一个值.

BTW,queue.js只是我对ES6承诺的小糖.

queue.js

function defer() {
    let resolve = null;
    let reject = null;
    let promise = new Promise((_resolve, _reject) => {
        resolve = _resolve;
        reject = _reject;
    });

    return {
        'promise': promise,
        'resolve': resolve,
        'reject': reject
    };
}

module.exports = defer;

内容:

let Q = require('./queue');
let cb = Q();

function callback(response) {
    if (response) {
        let {result, data} = response;

        if (result === 'OK') {
            cb.resolve(data);

        } else if (result === 'KO') {
            cb.reject(data); …