JQuery无限衰减循环碰撞

我在上一个教程，正在研究另一个用户发布的关于使循环连续的内容

我试图使序列连续循环，但由于某种原因，我无法理解为什么它适用于1.5个循环，然后项目开始以错误的顺序淡入淡出。它在第一个循环中正确地淡出，然后第二个循环中的第四个项目在后期淡出，然后在该点之后一切都关闭

JQuery

(function($){

     var yourFade = 1, // the amount of time in seconds that the elements will fade in AND fade out
     yourDelay = 2, // the amount of time in seconds that there will be a delay between the fade ins and fade outs
     fadeTime = yourFade * 1000, //convert fade seconds to milliseconds (1000)
     delayTime = yourDelay * 1000, // convert delay seconds to milliseconds (2000)
     totalTime = fadeTime + delayTime, //3000 milliseconds...needed for all those delays we talked about
     allElems, // find out exactly how many page elements have the 'toBeFaded' class (4)
     elemNoFade, // Will help us find the last element represent the last element (3)
     i,
     fadingElem;
     allElems = $('.toBeFaded').length

    function fadeit(){
        for (i = 0, allElems = $('.toBeFaded').length, elemNoFade = allElems - 1; i < allElems; i+=1) {

            fadingElem = "#elem" + i;           

            $(fadingElem).delay(totalTime * i).fadeIn(fadeTime).delay(delayTime).fadeOut(fadeTime);
        }
    }
    fadeit();
    setInterval(fadeit,totalTime*allElems);


    })(jQuery); 

HTML

<div id="elem0" class="toBeFaded">Message 1</div>
<div id="elem1" class="toBeFaded">Message 2</div>
<div id="elem2" class="toBeFaded">Message 3</div>
<div id="elem3" class="toBeFaded">Message 4</div>

消息1
信息2
信息3
信息4

谢谢你的帮助！我已经想了好几个小时了，但运气不好。

你能帮个忙吗

<div id="elem0" class="toBeFaded">Message 1</div>
<div id="elem1" class="toBeFaded">Message 2</div>
<div id="elem2" class="toBeFaded">Message 3</div>
<div id="elem3" class="toBeFaded">Message 4</div>