您可以在加载页面之前显示加载图像，并在加载图像时隐藏它完成（使用第二个参数添加在请求完成时调用的回调）：

You can display the loading image before loading the page, and hide it when done (use the second parameter for adding a callback which is called when the request has completed):

$("#loading").show();
$("#content").load("inc/content.php", function () {
    $("#loading").hide();
});

显然，您需要文档中的元素 loading ，例如：

Obviously, you need an element in your document with the ID loading, like:

<img id="loading" src="loading.gif" alt="Loading">