是jQuery的ATTR（）异步？ [英] Is jquery's attr() asynchronous?

问题描述

说我有一个循环，在每个迭代追加与img标签的div，然后用像这样加载其src属性：

Say I have a loop that on each iteration it appends a div with an img tag, then loads its src attribute using something like this:

$("img").last().attr('src', imageSource);

如果我这样做了一些不同的图像几次迭代，我收到这些图像的异步加载？

If I'm doing this for a few iterations for a few different images, am I getting an asynchronous loading of those images?

如果不是，我怎么异步通过循环加载图像？我会很高兴得到一些AJAX技巧。

If not, how do I load images asynchronously by looping? I'll be happy to get some ajax tips.

推荐答案

ATTR 不是异步的。这是一个非常简单的操作，发生瞬间有效

attr is not asynchronous. It is a very simple operation that takes place effectively instantly.

然而，来自服务器的图像的装载花费相当长。这个过程的是的异步：只要你设定的属性，你可以忘掉它，浏览器将加载图像，你的背景

However, the loading of the images from the server takes rather longer. That process is asynchronous: as soon as you set the attribute, you can forget about it and the browser will load the image for you in the background.

加载图像异步是不是一种选择：它实际上是图像加载的唯一途径。

Loading images asynchronously isn't an option: it is in fact the only way that images are loaded.

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