Javascript If/Else-If语句缩减

从我的服务器上，我得到一个XML列表，其中包含正在运行的“时间表”。 当时间线处于“运行”或“结束时保持”状态时，按钮将处于活动状态

我已经这样做了，它的工作。 但是我想在我的代码中拒绝使用“Else”语句。 有什么想法吗

 function statusCheck()
{
    $.ajax({
        type: "GET",
        url: "/query/timelineStatus?id=1-30",
        dataType: "xml",
        success: function (xml) {
            $(xml).find("timelineStatus").each(function(){
                var timelineId = parseInt($(this).attr("id"));
                var playState = $(this).find("playState").text();
                if (timelineId == 1) // timeline_1
                {
                    changeJQMThemeSwatch("#timeline_1", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                }
                else if (timelineId == 2) // timeline_2
                {
                    changeJQMThemeSwatch("#timeline_2", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                }
                else if (timelineId == 3) // timeline_3
                {
                    changeJQMThemeSwatch("#timeline_3", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                }
                else if (timelineId == 4) // timeline_4
                {
                    changeJQMThemeSwatch("#timeline_4", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                }
                else if (timelineId == 5) // timeline_5
                {
                    changeJQMThemeSwatch("#timeline_5", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                }
                else if (timelineId == 6) // timeline_6
                {
                    changeJQMThemeSwatch("#timeline_6", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                }

        }
    })
}

---

根据id命名的标准，您可以只使用一个小字符串连接

function statusCheck()
{
    $.ajax({
        type: "GET",
        url: "/query/timelineStatus?id=1-30",
        dataType: "xml",
        success: function (xml) {
            $(xml).find("timelineStatus").each(function(){
                var timelineId = parseInt($(this).attr("id"));
                var playState = $(this).find("playState").text();
                if (timelineId > 0 && timelineId <= 6) {
                    changeJQMThemeSwatch("#timeline_" + timelineId, (playState == "Running" || playState == "Held at end") ? "b" : "a");
                }
            });
        }
    });
}

功能状态检查（）
{
$.ajax({
键入：“获取”，
url:“/query/timelineStatus？id=1-30”，
数据类型：“xml”，
成功：函数（xml）{
$（xml）.find（“timelineStatus”）.each（函数（）{
var timelineId=parseInt（$（this.attr（“id”））；
var playState=$（this.find（“playState”）.text（）；
如果（timelineId>0&&timelineId那么动态执行该操作如何

changeJQMThemeSwatch("#timeline_"+timelineId, (playState == "Running" || playState == "Held at end") ? "b" : "a");

如果所有的
#timeline_x
值都遵循此模式，只需执行以下操作：

function statusCheck()
{
    $.ajax({
        type: "GET",
        url: "/query/timelineStatus?id=1-30",
        dataType: "xml",
        success: function (xml) {
            $(xml).find("timelineStatus").each(function(){
                var timelineId = parseInt($(this).attr("id"));
                var playState = $(this).find("playState").text();
                if(timelineId > 0 && timelineId <= 6) { // change as needed
                     changeJQMThemeSwatch("#timeline_" + timelineId, (playState == "Running" || playState == "Held at end") ? "b" : "a");
                }
            }
        })
    });
}

我使用了第一个带有额外“如果”行的选项，效果很好。如果没有“如果”行，它就不起作用。我仍然处于学习曲线中，像这样的小组在这件事上帮助很大。很高兴提供帮助！请记住选择一个答案！：）使用上述技巧是可行的，但在Chrome仪表板中，它显示了拆分字符串的问题：函数changeJQMThemeSwatch（selector，swatch）{“var classList=$（selector）.attr（“class”）.split（/\s+/）；“我知道它与/\s+/有关，但我不知道正确的表示法是什么。
function statusCheck()
{
    $.ajax({
        type: "GET",
        url: "/query/timelineStatus?id=1-30",
        dataType: "xml",
        success: function (xml) {
            $(xml).find("timelineStatus").each(function(){
                var timelineId = parseInt($(this).attr("id"));
                var playState = $(this).find("playState").text();
                switch(timelineId) {
                    case 1:
                        changeJQMThemeSwatch("#timeline_1", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                    break;
                    case 2:
                        changeJQMThemeSwatch("#timeline_2", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                    break;
                    case 3:
                        changeJQMThemeSwatch("#timeline_3", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                    break;
                    case 4:
                        changeJQMThemeSwatch("#timeline_4", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                    break;
                    case 5:
                        changeJQMThemeSwatch("#timeline_5", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                    break;
                    case 6:
                        changeJQMThemeSwatch("#timeline_6", (playState == "Running" || playState == "Held at end") ? "b" : "a");
                    break;
                }
            }
        })
    });
}