Li-Yongjun

查看框架的源代码

使用浏览器查看网页源代码时，发现有个选项【查看框架的源代码】，很好奇，这个是怎么来的。
探究了一番，出现这个选项需要两个条件：

浏览器支持（支持：谷歌、360安全浏览器极速模式、火狐，不支持：Edge）
网页中使用了</code> 或 <code><frameset></code> 标签</li> </ol> <p>试验一下</p> <p>index.html</p> <pre><code class="prism language-html"><span class="token doctype"><!DOCTYPE html></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>meta</span> <span class="token attr-name">charset</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>utf-8<span class="token punctuation">"</span></span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>title</span><span class="token punctuation">></span></span>mini_httpd test<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>title</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>head</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>container<span class="token punctuation">"</span></span><span class="token style-attr language-css"><span class="token attr-name"> <span class="token attr-name">style</span></span><span class="token punctuation">="</span><span class="token attr-value"><span class="token property">width</span><span class="token punctuation">:</span>500px</span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>header<span class="token punctuation">"</span></span><span class="token style-attr language-css"><span class="token attr-name"> <span class="token attr-name">style</span></span><span class="token punctuation">="</span><span class="token attr-value"><span class="token property">background-color</span><span class="token punctuation">:</span>#FFA500<span class="token punctuation">;</span></span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>h1</span><span class="token style-attr language-css"><span class="token attr-name"> <span class="token attr-name">style</span></span><span class="token punctuation">="</span><span class="token attr-value"><span class="token property">margin-bottom</span><span class="token punctuation">:</span>0<span class="token punctuation">;</span></span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span>主要的网页标题<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>h1</span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>menu<span class="token punctuation">"</span></span><span class="token style-attr language-css"><span class="token attr-name"> <span class="token attr-name">style</span></span><span class="token punctuation">="</span><span class="token attr-value"><span class="token property">background-color</span><span class="token punctuation">:</span>#FFD700<span class="token punctuation">;</span><span class="token property">height</span><span class="token punctuation">:</span>200px<span class="token punctuation">;</span><span class="token property">width</span><span class="token punctuation">:</span>100px<span class="token punctuation">;</span><span class="token property">float</span><span class="token punctuation">:</span>left<span class="token punctuation">;</span></span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>b</span><span class="token punctuation">></span></span>菜单<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>b</span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>br</span><span class="token punctuation">></span></span> HTML<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>br</span><span class="token punctuation">></span></span> CSS<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>br</span><span class="token punctuation">></span></span> JavaScript<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>content<span class="token punctuation">"</span></span><span class="token style-attr language-css"><span class="token attr-name"> <span class="token attr-name">style</span></span><span class="token punctuation">="</span><span class="token attr-value"><span class="token property">background-color</span><span class="token punctuation">:</span>#EEEEEE<span class="token punctuation">;</span><span class="token property">height</span><span class="token punctuation">:</span>200px<span class="token punctuation">;</span><span class="token property">width</span><span class="token punctuation">:</span>400px<span class="token punctuation">;</span><span class="token property">float</span><span class="token punctuation">:</span>left<span class="token punctuation">;</span></span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span> 内容在这里<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span> aaa <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name"><span class="token namespace">width:</span><span class="token namespace">550px;height:</span>550px;</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>iframe</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>./test.html<span class="token punctuation">"</span></span> <span class="token attr-name">width</span><span class="token attr-value"><span class="token punctuation">=</span>550</span> <span class="token attr-name">height</span><span class="token attr-value"><span class="token punctuation">=</span>550</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>iframe</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span class="token punctuation">></span></span> </code></pre> <p>text.html</p> <pre><code class="prism language-html"><span class="token doctype"><!DOCTYPE html></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>meta</span> <span class="token attr-name">charset</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>utf-8<span class="token punctuation">"</span></span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>title</span><span class="token punctuation">></span></span>mini_httpd test<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>title</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>head</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>container<span class="token punctuation">"</span></span><span class="token style-attr language-css"><span class="token attr-name"> <span class="token attr-name">style</span></span><span class="token punctuation">="</span><span class="token attr-value"><span class="token property">width</span><span class="token punctuation">:</span>500px</span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>header<span class="token punctuation">"</span></span><span class="token style-attr language-css"><span class="token attr-name"> <span class="token attr-name">style</span></span><span class="token punctuation">="</span><span class="token attr-value"><span class="token property">background-color</span><span class="token punctuation">:</span>#FFA500<span class="token punctuation">;</span></span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>h1</span><span class="token style-attr language-css"><span class="token attr-name"> <span class="token attr-name">style</span></span><span class="token punctuation">="</span><span class="token attr-value"><span class="token property">margin-bottom</span><span class="token punctuation">:</span>0<span class="token punctuation">;</span></span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span> test 22222 <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>h1</span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>menu<span class="token punctuation">"</span></span><span class="token style-attr language-css"><span class="token attr-name"> <span class="token attr-name">style</span></span><span class="token punctuation">="</span><span class="token attr-value"><span class="token property">background-color</span><span class="token punctuation">:</span>#FFD700<span class="token punctuation">;</span><span class="token property">height</span><span class="token punctuation">:</span>200px<span class="token punctuation">;</span><span class="token property">width</span><span class="token punctuation">:</span>100px<span class="token punctuation">;</span><span class="token property">float</span><span class="token punctuation">:</span>left<span class="token punctuation">;</span></span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>b</span><span class="token punctuation">></span></span>菜单<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>b</span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>br</span><span class="token punctuation">></span></span> HTML<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>br</span><span class="token punctuation">></span></span> CSS<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>br</span><span class="token punctuation">></span></span> JavaScript<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>content<span class="token punctuation">"</span></span><span class="token style-attr language-css"><span class="token attr-name"> <span class="token attr-name">style</span></span><span class="token punctuation">="</span><span class="token attr-value"><span class="token property">background-color</span><span class="token punctuation">:</span>#EEEEEE<span class="token punctuation">;</span><span class="token property">height</span><span class="token punctuation">:</span>200px<span class="token punctuation">;</span><span class="token property">width</span><span class="token punctuation">:</span>400px<span class="token punctuation">;</span><span class="token property">float</span><span class="token punctuation">:</span>left<span class="token punctuation">;</span></span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span> 内容在这里<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span class="token punctuation">></span></span> <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span class="token punctuation">></span></span> </code></pre> <p>在 index.html 页面中使用 iframe 标签将 test.html 页面包含进来，效果如下<a href="http://img.e-com-net.com/image/info8/2fe421f6a0ee441881f9a11a39e2677e.jpg" target="_blank"><img src="http://img.e-com-net.com/image/info8/2fe421f6a0ee441881f9a11a39e2677e.jpg" alt="查看框架的源代码_第1张图片" width="650" height="593" style="border:1px solid black;"></a></p> </div> </div> </div> </div> </div>  <div id="SOHUCS" sid="1305153341331902464"></div> <script type="text/javascript" src="/views/front/js/chanyan.js"></script>  <div class="youdao-fixed-ad" id="detail_ad_bottom"></div> </div> <div class="col-md-3"> <div 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