SOURCE

function sendMessage(name, success, error) {
    console.log(
        `邓哥： -> ${name}:最近有谣言说我喜欢你，我要澄清一下，那不是谣言。`
    )
    console.log(`等待${name}回复......`);

    setTimeout(() => {
        if(Math.random() <= 0.5) {
            success(`${name} -> 邓哥： 我是九，你是三，除了你还是你`);
        } else {
            error(`${name} -> 邓哥：你是个好人`);
        }
    }, 1000)
};

// sendMessage('李建国', function success(res) {
//     console.log(res);
// }, function error(res) {
//     console.log(res);
//     sendMessage('下一位', 
//     function success(res) {
//         console.log(res)
//     }, 
//     function error(res) {
//         console.log('全部拒绝')
//     })
// });




/**
 * 利用promise
 */

function sendPromiseMessage(name) {
    return new Promise((resolve, reject) => {
        console.log(
                `邓哥： -> ${name}:最近有谣言说我喜欢你，我要澄清一下，那不是谣言。`
        )
        console.log(`等待${name}回复......`);

        setTimeout(() => {
            if(Math.random() <= 0.5) {
                resolve(`${name} -> 邓哥： 我是九，你是三，除了你还是你`);
            } else {
                reject(`${name} -> 邓哥：你是个好人`);
            }
        }, 1000)
    })
};

// sendPromiseMessage('李建国').then(res => {
//     console.log(res);
// }, err => {
//     console.log(err);
//     sendPromiseMessage('下一位').then(res => {
//         console.log(res);
//     }, err => {
//         console.log('全部拒绝啦');
//     });
// });

// 根据指定的图片路径，创建一个img图片
// 该函数需要返回一个Promise，当图片加载成功，任务成功，加载失败，任务失败
// 任务完成后，需要提供图片的dom元素， 失败提供失败的原因
// 提示：load事件，图片加载完成时触发，error事件加载失败时候触发

/**
 * @returns {Promise} 
 */
function createImg(src) {
    return new Promise((resolve, reject) => {
        const oImg = document.createElement('img');
        oImg.setAttribute('src', src)
        oImg.onload = function() {
            resolve(oImg);
        }
        oImg.onerror = function(err) {
            reject(err);
        }
    });
};

createImg('http://www.baidu.com/baidu.php?url=0s0000aPch_Smgbn9RPLrlxlN8yjmXj00gvLYK040QYLB2hzaRxsaMPvsT_ZbvIj41Nn1hlhcTI3lBvXRL4E8oQW3oK9d2raugIShLSq-VoOie4gvgJpmJ30vjDlPB3Srd7K4XmFKDzv7I6QzJlJ3CyKnyxEoxFEwOcozpWj8RXOfIyngM3V04zYge48VjfDEzyXr0qcy-SzO42_djVN3Iz0cK2s.7R_iUtMZz9JCpnBcPXBEFb3spC7BmeP-hiEF3dtEZuzdn84TXGmuCy2SMWuYJ0.U1Yz0ZDq8xe2EtUh0ZKGm1Ys0ZK1pyI85H6YmH-bPyFhrjm3nyRLmH6LPjPhrjn4nhRdPAR1uhRv0Zfqz2l4O_JOk8m0pyYqnWcd0ATqTZnz0ZNG5yF9pywdUAY0TA-b5Hn0mv-b5HfzPfKVIjYknjDLg1DsnH-xnW0dnNtznjmzg1nvnjD0pvbqn0KzIjYLP1n0mhbqnHR3g1csP7tdnjn0UynqnHbkrjTsPW6dndtknjD4g1csPH7xnWDdPjRYP1TYPWwxn0KkTA-b5H00TyPGujYs0ZFMIA7M5H00mycqn7ts0ANzu1Yz0ZKs5H00UMus5H08nj0snj0snj00Ugws5H00uAwETjYs0ZFJ5H00uANv5gKW0AuY5H00TA6qn0KET1Ys0AFL5HDs0A4Y5H00TLCq0A71gv-bm1dsTzdBuAw30A-bm1dcfbD0TA9YXHY0IA7zuvNY5Hm1g1KxnHR10ZwdT1Y4rHDYPW6kPjRYrH0zrjmvnjnY0ZF-TgfqnHmYnWDYPHbYnjDznsK1pyfqmHbLuy7hrj0snj0kn1nLm6KWTvYqnRParHfdwWn3nWcsrDP7nsK9m1Yk0ZK85H00TydY5H00Tyd15H00XMfqn0KVmdqhThqV5HKxn7tsg1Kxn0Kbmy4dmhNxTAk9Uh-bT1Ysg1Kxn7tsg100TA7Ygvu_myTqn0Kbmv-b5H00ugwGujYVnfK9TLKWm1Ys0ZNspy4Wm1Ys0Z7VuWYs0AuWIgfqn0KGTvP_5H00mywhUA7M5HD0UAuW5H00uAPWujY0IZF9uARqn0KBuA-b5Rcknb77rjD4PRmvn1IaPHPjnj0LPH9AnWD4wj0vfHbz0AqW5HD0mMfqn0KEmgwL5H00ULfqn0KETMKY5H0WnanWnansc10Wna3snj0snj0Wnansc10WQinsQW0snj0snankQW0snjDsn0K3TLwd5HnkrjckrHck0Z7xIWYsQW63g108njKxna3sn7tsQWDsg108njuxna34rNtsQWndg100mMPxTZFEuA-b5H00ThqGuhk9u1Ys0APv5fKGTdqWTADqn0KWTjYs0AN1IjYs0APzm1YzrHnknf&us=newvui&xst=mWdanHFKwH6krHNAPWnLfWR1f10sP1R3wWckrRfsPbD4n6715HDznWD1n1bznW01P1mvnHDLnWf1g1czPNtk0gTqz2l4O_JOk8mKTHv4O_JOk8mKIHY1nH6znHbznf7Y5HDvPjckPjR4Pj0KUgDqn0cs0BYKmv6quhPxTAnKUZRqn07WUWYYrj0znHcLnNt1r7qCmyqxTATKnHn4nHfLPWD4rf&word=&ck=7148.4.55.221.370.420.175.229&shh=www.baidu.com&sht=48021271_38_hao_pg&wd=').then(res => {
    console.log(res);
}, err => {
    console.log(err);
})