如何解决因为缓存无法及时更新图片问题_html/css_WEB-ITnose
如何解决因为缓存无法及时更新图片问题:
在加载远程图片的时候,往往会由于缓存的原因,即使是在服务器更新了图片有时候也得不到及时的更新。可以使用如下方法解决此问题,代码如下:
$(".myImg").src("yourUrl.action?randUrl"+Math.ceil(new Date()/3600000);
实现的原理很简单,就是让每次加载的图片的src属性不同就可以做到了,这个时候可能很多人认为每次图片的src属性不同的话,图片不久乱了吗,其实不然,看一个例子:
<img src="/static/imghw/default1.png" data-src="1.jpg?1231asd" class="lazy" alt="如何解决因为缓存无法及时更新图片问题_html/css_WEB-ITnose" >
上面的代码中,尽管后面添加了其他参数,但是加载的依然i1.jpg,如果每次后更新后面的参数,那么每次都会加载最新的图片。
原文地址是:http://www.softwhy.com/forum.php?mod=viewthread&tid=7958
更多内容可以参阅:http://www.softwhy.com/jquery/

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