好的，我已经解决了.

控制台在说我:

无法读取null的属性"rel".

Cannot read property 'rel' of null.

发生这种情况是因为我在var ItemGallery = function()内部做的第一件事是更改下一页的href(下一页来自ajax请求).下一页的href位于当前页面底部的<div>中.

This happened because the first thing I was doing inside var ItemGallery = function(), was to change the href for the next page (next page comes from ajax request). The href for the next page is located within a <div> in the bottom of the current page.

重点是，我要在当前页面加载之前更改下一页的href.

The point is that I'm changing the href for the next page, BEFORE the current page has been loaded.

所以..

window.onload = function () {
                this.nextPageQueryString = document.getElementById("nextPage").rel;

                this.next_href = this.domain_url + this.nextPageQueryString;
            };

注意:这解决了我的问题，但是我觉得很奇怪. ng-if无法看到下一个href的'rel'属性，我得到了空白页.现在Angular可以看到'rel'属性，并且一切正常.

NOTE: this has solved my problem, but I find it very strange. ng-if wasn't able to see the 'rel' property for the next href and I got the empty page. Now Angular can see the 'rel' property and it all works fine.

ng-if应该可以与html中的功能分开使用.

ng-if should work apart of what I have in the html.

我仍然不了解ng-if的行为.