var items = [ 1, 2, 3, 4, 5, 6 ]; var results = []; function async(arg, callback) { console.log('参数为 ' + arg +' , 1秒后返回结果'); setTimeout(function () { callback(arg * 2); }, 1000); } function final(value) { console.log('完成: ', value); } function series(item) { if(item) { async( item, function(result) { results.push(result); return series(items.shift()); }); } else { return final(results[results.length - 1]); } } series(items.shift()); //wangdoc