通过css发出request，下载所需图片…

<br /> <style> <p>#preloadedImages {</p> <p> width: 0px;</p> <p> height: 0px;</p> <p> display: inline;</p> <p> background-image: url(path/to/image1.png);</p> <p> background-image: url(path/to/image2.png);</p> <p> background-image: url(path/to/image3.png);</p> <p> background-image: url(path/to/image4.png);</p> <p> background-image: url();</p> <p>} </p> </style> <div id="preloadedImages"></div> <p>