blocks|key|2569947|text|如果您的CSS很小并且是动态的，那么最好的解决方案就是使用<style>标记将其内联地注入到<head>中：https://developer.mozilla.org/en-US/docs/Web/HTML/Element/style|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2569948|这样，您的样式将在每次页面刷新时更新，您将不需要等待额外的http请求。|2569949|例如，如果样式表如下所示：|2569950|/*+This+stuff+hardly+ever+changes+*/
html+{
++++background-color:+white;
++++font-size:+16px;
}

/*+This+stuff+changes+all+the+time+*/
body+{
++++background-image:+url('todays-image.png');
}|code-block|syntax|javascript|2569951|你的html看起来像这样：|2569952|<html>
++++<head>
++++++++<title>My+Page</title>
++++++++<link+rel="stylesheet"+type="text/css"+href="index.css"+/>
++++</head>
++++<body>
++++++++<h1>My+Page</h1>
++++</body>
</html>|2569953|将css更改为如下所示：|2569954|/*+This+stuff+hardly+ever+changes+*/
html+{
++++background-color:+white;
++++font-size:+16px;
}|2569955|html看起来像这样：|2569956|<html>
++++<head>
++++++++<title>My+Page</title>
++++++++<link+rel="stylesheet"+type="text/css"+href="index.css"+/>
++++++++<style>
++++++++++++/*+This+stuff+changes+all+the+time+*/
++++++++++++body+{
++++++++++++++++background-image:+url('todays-image.png');
++++++++++++}
++++++++</style>
++++</head>
++++<body>
++++++++<h1>My+Page</h1>
++++</body>
</html>|2569957|如果index.css的所有内容经常更改，则可以完全删除该文件并删除link标记。|2569958|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/docs/Web/HTML/Element/style^0|T|7|1A|6|1I|1R|0|0|0|0|0|0|0|0|0|0|0|2|9|Y|4|0^^$0|@$1|2|3|4|5|6|7|1A|8|@$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]]|D|@$9|1F|A|1G|1|1H]]|E|$]]|$1|F|3|G|5|6|7|1I|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|1J|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|1K|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|1L|8|@]|D|@]|E|$]]|$1|Q|3|R|5|L|7|1M|8|@]|D|@]|E|$M|N]]|$1|S|3|T|5|6|7|1N|8|@]|D|@]|E|$]]|$1|U|3|V|5|L|7|1O|8|@]|D|@]|E|$M|N]]|$1|W|3|X|5|6|7|1P|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|L|7|1Q|8|@]|D|@]|E|$M|N]]|$1|10|3|11|5|6|7|1R|8|@$9|1S|A|1T|B|C]|$9|1U|A|1V|B|C]]|D|@]|E|$]]|$1|12|3|-4|5|6|7|1W|8|@]|D|@]|E|$]]]|13|$14|$5|15|16|17|E|$18|19]]]]

<p>If your CSS is small and dynamic, your best solution would be to inject it inline in the <code>&lt;head&gt;</code> using <code>&lt;style&gt;</code> tags: <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Element/style" rel="nofollow">https://developer.mozilla.org/en-US/docs/Web/HTML/Element/style</a></p>

<p>This way your styles will be updated on every page refresh and you will not need to wait for an additional http request.</p>

<p>For example, if your stylesheet looks like this:</p>

<pre><code>/* This stuff hardly ever changes */
html {
    background-color: white;
    font-size: 16px;
}

/* This stuff changes all the time */
body {
    background-image: url('todays-image.png');
}
</code></pre>

<p>And your html looks something like this:</p>

<pre><code>&lt;html&gt;
    &lt;head&gt;
        &lt;title&gt;My Page&lt;/title&gt;
        &lt;link rel="stylesheet" type="text/css" href="index.css" /&gt;
    &lt;/head&gt;
    &lt;body&gt;
        &lt;h1&gt;My Page&lt;/h1&gt;
    &lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>Change the css to look like this:</p>

<pre><code>/* This stuff hardly ever changes */
html {
    background-color: white;
    font-size: 16px;
}
</code></pre>

<p>And the html to look like this:</p>

<pre><code>&lt;html&gt;
    &lt;head&gt;
        &lt;title&gt;My Page&lt;/title&gt;
        &lt;link rel="stylesheet" type="text/css" href="index.css" /&gt;
        &lt;style&gt;
            /* This stuff changes all the time */
            body {
                background-image: url('todays-image.png');
            }
        &lt;/style&gt;
    &lt;/head&gt;
    &lt;body&gt;
        &lt;h1&gt;My Page&lt;/h1&gt;
    &lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>If all of the contents of <code>index.css</code> change frequently, you can remove the file entirely and remove the <code>link</code> tag.</p>


blocks|key|549719|text|您可以使用服务器时间戳|type|unstyled|depth|inlineStyleRanges|entityRanges|data|549720|<link+rel="stylesheet"+type="text/css"+href="style.css?<?php+echo+date('l+jS+\of+F+Y+h:i:s+A');+?>"+/>|code-block|syntax|javascript|549721|一个更好的想法是使用css的一个版本：|549722|<link+rel="stylesheet"+type="text/css"+href="style.css?version=<?php+echo+$CSS_VERSION;+?>"+/>|549723|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<p>You can use a server timestamp</p>

<pre><code>&lt;link rel="stylesheet" type="text/css" href="style.css?&lt;?php echo date('l jS \of F Y h:i:s A'); ?&gt;" /&gt;
</code></pre>

<p>A better Idea is to use a version of your css:</p>

<pre><code>&lt;link rel="stylesheet" type="text/css" href="style.css?version=&lt;?php echo $CSS_VERSION; ?&gt;" /&gt;
</code></pre>


blocks|key|2440377|text|对于您的特定问题，您可以使用ticks通过javascript注入链接。在本例中，代码将插入css作为最后处理的样式集。不过，我建议您在后端执行此操作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2440378|<html>
++++<head>
++++++++<title>Test</title>
++++++++<script+type="text/javascript">
++++++++++++var+sourceName+=+'test.css?v='+%2B+((new+Date().getTime()+*+10000)+%2B+621355968000000000);+//+using+ticks
++++++++++++var+linkElement+=+document.createElement('link');
++++++++++++linkElement.setAttribute('type',+'text/css');
++++++++++++linkElement.setAttribute('rel',+'stylesheet');
++++++++++++linkElement.setAttribute('href',+sourceName);
++++++++++++document.getElementsByTagName('head')[0].appendChild(linkElement);
++++++++</script>
++++</head>
++++<body>
++++++++<h1>Test</h1>
++++</body>
</html>|code-block|syntax|javascript|2440379|我在发布之前对其进行了测试，并通过了各种方法。许多人没有执行href更改。它似乎只有在被注入到DOM中时才能执行。|2440380|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

<p>For your particular issue, you could inject the link via javascript using ticks. In this example the code would insert the css as the last styleset processed. I would recommend doing this on the back-end though.</p>

<pre><code>&lt;html&gt;
    &lt;head&gt;
        &lt;title&gt;Test&lt;/title&gt;
        &lt;script type="text/javascript"&gt;
            var sourceName = 'test.css?v=' + ((new Date().getTime() * 10000) + 621355968000000000); // using ticks
            var linkElement = document.createElement('link');
            linkElement.setAttribute('type', 'text/css');
            linkElement.setAttribute('rel', 'stylesheet');
            linkElement.setAttribute('href', sourceName);
            document.getElementsByTagName('head')[0].appendChild(linkElement);
        &lt;/script&gt;
    &lt;/head&gt;
    &lt;body&gt;
        &lt;h1&gt;Test&lt;/h1&gt;
    &lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>I tested it before publishing it and went through various methods. Many did not execute the href change. It only seemed to execute if it was injected into the DOM.</p>


<p>using HTML5+CSS3+jQuery.</p>

<p>Since I am changing my CSS file frequently, I would like to force users' browsers always to fetch the CSS file and never use the cached version.</p>

<p>I found that I should write something like this:</p>

<pre><code>&lt;link rel="stylesheet" type="text/css" href="index.css?t=[...some unique id...]"/&gt;                          
</code></pre>

<p>How can I automatically generate such unique Id? ( maybe current time?)</p>

<p>Thanks</p>


How to always fetch CSS and not use cached copy?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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使用HTML5+CSS3+jQuery。因为我经常更改我的CSS文件，所以我想强制用户的浏览器总是获取CSS文件，而不是使用缓存的版本。我发现我应该写这样的东西：<link rel="stylesheet" type="text/css" href="index.css?t=[...some unique id...]...

问如何始终获取CSS而不使用缓存副本？
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问如何始终获取CSS而不使用缓存副本？EN