【备忘录】Promise.all包含rejected状态的多个promise完成后执行事件

function reflect(promise){
    return promise.then(function(v){ return {v:v, status: "resolved" }}, function(e){ return {e:e, status: "rejected" }});
}

var promises = [promise1, promise2, promise3];
Promise.all(promises.map(reflect)).then(function(results){
    // do something
});