为什么我的 jquery 幻灯片代码不起作用？

Question

我有三个图像，显示和样式如下：

<img id="img1" src="images/category_slideshow/yellow-viper-on-car-ramps.jpg" alt="Yellow Viper on Race Ramps Car Ramps" width="557" height="415" /> 
        <img class="onBottom" src="" width="557" height="415" />  
        <img class="onTop" src="" width="557" height="415" /> 

.onBottom{
  position:absolute;
  margin-top:-415px;
  background:url(../images/category_slideshow/loading.gif) center no-repeat;
}

.onTop{
  position:absolute;
  margin-top:-415px;
  background:url(../images/category_slideshow/loading.gif) center no-repeat;
}

这是我的 Javascript：

  $(document).ready(function() {

    var productImages = new Array();
    productImages["raceramps56"] = "images/category_slideshow/black-350z-on-car-ramps.jpg";
    productImages["raceramps67"] = "images/category_slideshow/red-corvette-on-car-ramps.jpg";
    productImages["xtenders"] = "images/category_slideshow/silver-sti-on-xtenders.jpg";
    productImages["sportramps"] = "images/category_slideshow/black-corvete-on-car-ramps.jpg";
    productImages["rollups"] = "images/category_slideshow/yellow-lotus-on-rollups-for-car-ramps.jpg";


    $(".onTop, .onBottom").css("opacity", "0");   //Give the two images 0 opacity

    $( '.leftMenuProductButton' ).hover ( 
      function () {                         
        //.leftMenuProductButton is a button in a menu.
        // There are several of these buttons, each button
        // has an ID such as "raceramps56" or "xtenders"

        var swapIMG = $(this).attr("id");  //This gets the ID, such as "raceramps56" or "xtenders"

        $(".onTop").css({opacity: '0', 'z-index': '3'})
          .attr("src", productImages[swapIMG])
          .load(function() {
            //This takes the first IMG, make it invsisbile,
            // brings it to the top, replaces it's SRC image
            // with the variable, then once it is loaded, it fades in.
             $(this).fadeTo(300, 1);
          })
          .removeClass("onTop")
          .addClass("replaceMe"); // This removes the class "onTop and replaces it with "replaceMe". I can't simply change onTop to onBottom yet, as I need to reference onBottom later.

         $(".onBottom").addClass("onTop").removeClass("onBottom").css({'z-index': '1'});  // This converts onTop to onBottom, and puts it at the bottom. 

         $(".replaceMe").removeClass("replaceMe").addClass("onBottom"); //Now that I no longer have an onBottom, I can replace replaceMe with onBottom

      },
      function () {
        //does nothing right now

      });
   });

此代码运行得很好。但是，如果我将鼠标悬停在 .leftMenuProductButton 上，然后移动到另一个 .leftMenuProductButton，然后在两者之间来回移动，则它的行为不正常。

您可以在 www.raceramps.com/v3 查看示例。

Answer 1

嗯，好的，我要改变两件事，首先尝试改变

$(".onTop").css({opacity: '0', 'z-index': '3'}).attr("src",productImages[swapIMG]).load(function() {
             $(this).fadeTo(300, 1, function(){
    $(this).removeClass("onTop").addClass("replaceMe");
});

}); 

这种方式，直到完全淡入为止，它不会删除类。如果你像你一样链接 .removeClass ，它将在 LOAD 完成后立即触发，而不是淡入淡出。

其次，我会在开始新动画之前停止所有动画，尝试

$(".onTop").stop();

在悬停功能之上添加