js

//循环体拿进来，当循环结束之后才能做其他事
function getUploadTime(func) {
    var list = getUploadContentList();
    for (var i = 0; i < list.length; i++) { 
        (function(content) {
            var startUploadTime = new Date().valueOf();
            var xhr = $.ajax({
                type: "POST",
                url: url",
                data: content,
                dataType: "text",
                success: function () {
                    var endUploadTime = new Date().valueOf();
                    var timeUploadInterval = (endUploadTime - startUploadTime) / 1000;//s
                    var speed = (getTotalBytes(content) / 1024 / 1024 / timeUploadInterval);
                    if (typeof speed === "number") {
                        //触发回调
                        func(speed);
                    } else {
                        func(0)
                    }
                },
                error: function () {
                    func(0);
                }
            })
        }(list[i]));
    }
    console.log("dddd")
}

function afterGetUploadTime(speed){
    if (speed !== 0){
        uploadSpeedList.push(speed);
    }
    var total = 0;
    for (var i=0;i<uploadSpeedList.length;i++){
        total += uploadSpeedList[i];
    }
    console.log(speed+ "  "+total + "  "+ (total/uploadSpeedList.length).toFixed(2)+ " " + uploadSpeedList.length);
    $(".uploadSpeed").val((total/uploadSpeedList.length).toFixed(2) + "Mb/s");
}