如何解决因为缓存无法及时更新图片问题_html/css

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如何解决因为缓存无法及时更新图片问题_html/css_WEB-ITnose

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Jun 24, 2016 am 11:31 AM

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/imghwm/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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