当我在生成的超文本中看到java字母链接时,它读作原型?1304329463。 我很想知道“?1304329463”指的是、呼吁或表示什么。
它是一个简单的<>控制机制。
如果你安装新的原型,该数字将发生变化,浏览器将敢下载新版本。
(理论上,吉大港山区的头目可用于控制海滩,但在现实世界中,有这么多不同的浏览器、藏匿处、轴心等,所有这些都以明显不同的方式行事。 在资源变化时,简单地改变资源使用权,从而保证资源的新版本得到使用,这更加容易。
附加在你固定档案上的外壳,是切断你固定档案的铁路路的一部分,常常不会改变。 所附的洗.是一种inger。 如果该档案中的内容发生变化,那就发生了变化。
It looks like a unix timestamp (representing Mon, 02 May 2011 09:44:23 GMT). That could be either the request time or the file creation time. Reason to add a timestamp is to be able to easily force browsers to fetch the file again. If the number sequence changes, it s considered to be a different request and browsers will simply refetch the file. That prevents caching issues when files get changed.
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