Question

如何动态添加数组，如下面的代码所示。我在JavaScript中创建了一个多维数组但是如何推送src "/_layouts/15/SSNIT.Portal/Images/ssnit02.jpg"和title "MyTitle"。我有多个值，我正在迭代它们？

carousel_images_info = [
    { src: "/_layouts/15/My.Portal/Images/my1.jpg", title: "ssnit01" },
    { src: "/_layouts/15/my3.Portal/Images/my2.jpg", title: "ssnit02" },
    { src: "/_layouts/15/my4.Portal/Images/my3.jpg", title: "ssnit03" },
    { src: "/_layouts/15/my5.Portal/Images/my4.jpg", title: "ssnit04" },
    { src: "/_layouts/15/my5.Portal/Images/ssnit05.jpg", title: "ssnit05" }
];

Answer 1

推送：）

carousel_images_info.push({ 
    title: "MyTitle",
    src: "/_layouts/15/SSNIT.Portal/Images/ssnit02.jpg"
});

但是，如果要避免重复，则必须在添加新行之前遍历整个列表以执行比较。另一个解决方案可能是推送所有内容，然后仅在需要时删除重复项。

Answer 2

这是包含对象的数组，你需要将对象推送到它，如：

var new_obj = {
    src: "/_layouts/15/SSNIT.Portal/Images/ssnit02.jpg",
    title: "My Title"
};
carousel_images_info.push(new_obj);

Answer 3

src和title的值是动态的，我可以这样做吗？

  var item_enumerator = this.items.getEnumerator();
  while (item_enumerator.moveNext()) {
    var item = item_enumerator.get_current();
    var image_url = location.protocol + "//" + location.host + item.get_item('FileRef');
    var image_title = item.get_item('FileLeafRef'); 
    var set = {
      src: image_url,
      title : image_title
    };
    this.carousel_images_info.push(set);
  }

Answer 4

试试这个，

var new_obj = {};
new_obj.src = "/_layouts/15/SSNIT.Portal/Images/ssnit02.jpg";
new_obj.title= "MyTitle";

carousel_images_info[carousel_images_info.length] = new_obj

如果你动态地做这个，那就做一个函数，

carousel_images_info=[];

function Insert(xSrc,xTitle)
{
    var new_obj = {};
    new_obj.src = xSrc;
    new_obj.title= xTitle;

    carousel_images_info[carousel_images_info.length] = new_obj;
}

Insert("/_layouts/15/SSNIT.Portal/Images/ssnit02.jpg","MyTitle");

如何在数组中添加多个值

4 个答案: