css-reference/property/content/index.html at master · ParryQiu/css-reference · GitHub

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---
layout: single
property_name: content
---

<section id="content" class="property">
  <header class="property-header">
    <nav class="property-links">
      <a class="property-links-direct" href="{{site.url}}/property/content/" data-property-name="content" data-tooltip="Single page for this property">Permalink</a>
      <a class="property-share" data-tooltip="Share on Twitter or Facebook" data-property-name="content">Share</a>
      <a target="_blank" href="https://developer.mozilla.org/en/docs/Web/CSS/content" data-tooltip="See on Mozilla Developer Network" rel="external">MDN</a>
    </nav>
    <h2 class="property-name">
      <a href="#content"><span>#</span>content</a>
    </h2>
    <div class="property-description">
      <p>Defines the text content of the <code>:before</code> and <code>:after</code> pseudo-elements.</p>

    </div>

  </header>


    <style type="text/css">.content p:before { content: normal; }</style>


    <section class="example">
      <header class="example-header">
        <p class="example-name">
            <code class="example-default" data-tooltip="这是属性的默认值">默认属性</code>


          <code class="example-value" data-tooltip="点击复制" data-clipboard-text="content: normal;">content: normal;</code>
        </p>
        <div class="example-description">
          <p>No content is added to the element.</p>

        </div>
      </header>

      <aside class="example-preview">
        <div class="example-browser"><i></i><i></i><i></i></div>
        <div class="example-output">
          <div class="example-output-div content " id="content-normal"><p data-something="cssreference">Hello world</p></div>
        </div>
      </aside>
          <style type="text/css">#content-normal{ content:normal;}</style>
    </section>
    <section class="example">
      <header class="example-header">
        <p class="example-name">


          <code class="example-value" data-tooltip="点击复制" data-clipboard-text="content: &quot;Foo bar&quot;;">content: &quot;Foo bar&quot;;</code>
        </p>
        <div class="example-description">
          <p>Considering this HTML element:</p>
<pre>&lt;p class="element"&gt;
  Hello world
&lt;/p&gt;</pre><p>And this CSS:</p>
<pre>.element:before {
  content: "Foo bar";
}</pre><p>The text content will be <strong>prepended</strong> to the element&#39;s content.</p>
<p>Notice how the end result <em>combines</em> text from the HTML and text from the CSS.</p>

        </div>
      </header>

      <aside class="example-preview">
        <div class="example-browser"><i></i><i></i><i></i></div>
        <div class="example-output">
          <div class="example-output-div content " id="content-foo-bar"><p data-something="cssreference">Hello world</p></div>
        </div>
      </aside>
          <style type="text/css">#content-foo-bar{ content:&quot;Foo bar&quot;;}</style>
        <style type="text/css">#content-foo-bar p:before { content: "Foo bar"; }</style>
    </section>
    <section class="example">
      <header class="example-header">
        <p class="example-name">


          <code class="example-value" data-tooltip="点击复制" data-clipboard-text="content: url(/images/jt.png);">content: url(/images/jt.png);</code>
        </p>
        <div class="example-description">
          <p>You can insert <strong>images</strong> by using the <code>url()</code> function.</p>

        </div>
      </header>

      <aside class="example-preview">
        <div class="example-browser"><i></i><i></i><i></i></div>
        <div class="example-output">
          <div class="example-output-div content " id="content-urlimagesjtpng"><p data-something="cssreference">Hello world</p></div>
        </div>
      </aside>
        <style type="text/css">#content-urlimagesjtpng p:before { content: url(/images/jt.png); }</style>
    </section>
    <section class="example">
      <header class="example-header">
        <p class="example-name">


          <code class="example-value" data-tooltip="点击复制" data-clipboard-text="content: attr(data-something);">content: attr(data-something);</code>
        </p>
        <div class="example-description">
          <p>Considering this HTML element:</p>
<pre>&lt;p class="element" data-something="cssreference"&gt;
  Hello world
&lt;/p&gt;</pre><p>And this CSS:</p>
<pre>.element:before {
  content: attr(data-something);
}</pre><p>The element will grab the text content from the HTML <strong>attribute</strong>.</p>

        </div>
      </header>

      <aside class="example-preview">
        <div class="example-browser"><i></i><i></i><i></i></div>
        <div class="example-output">
          <div class="example-output-div content " id="content-attrdata-something"><p data-something="cssreference">Hello world</p></div>
        </div>
      </aside>
          <style type="text/css">#content-attrdata-something{ content:attr(data-something);}</style>
        <style type="text/css">#content-attrdata-something p:before { content: attr(data-something); }</style>
    </section>

</section>