【javascript 基本篇】promise

new Promise((resolve) => {
    console.log('1');
    for(var i = 0; i < 4; i++) {
        if(i == 3) {
            console.log('5');
            resolve('6');
            console.log('2');
        }
    }
    console.log('3');
}).then((data) => {console.log(data)});
console.log('4');
    原文作者:luckyyulin
    原文地址: https://segmentfault.com/a/1190000013501794
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