Home Web Front-end Front-end Q&A html character escape %

html character escape %

May 27, 2023 am 11:06 AM

<p>HTML字符转义 %</p> <p>在HTML中,有一些字符是有特殊含义的,比如小于号(<)和大于号(>)用于标签和属性的定义,引号('")用于属性值的定义,等等。如果要在HTML中显示这些特殊字符本身,就需要使用字符实体或转义字符。</p> <p>在HTML中,字符实体以&开头,以;结尾,它可以表示任意字符。下面是一些常见的字符实体:</p> <table> <thead><tr> <th>实体</th> <th>字符</th> <th>描述</th> </tr></thead> <tbody> <tr> <td><code> </code></td> <td>空格</td> <td>空格字符</td> </tr> <tr> <td><code><</code></td> <td><code><</code></td><td>小于号</td></tr><tr><td><code>></code></td><td><code>></code></td> <td>大于号</td> </tr> <tr> <td><code>&</code></td> <td><code>&</code></td> <td>&号</td> </tr> <tr> <td><code>"</code></td> <td><code>"</code></td> <td>双引号</td> </tr> <tr> <td><code>'</code></td> <td><code>'</code></td> <td>单引号</td> </tr> </tbody> </table> <p>这些实体可以用于将特殊字符显示在HTML文档中,例如:</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><p>这是一段包含 <b>加粗</b> 的文本。</p></pre><div class="contentsignin">Copy after login</div></div><p>上面这个例子使用了实体 < 和 > 来代替 < 和 >,在浏览器中显示的效果是:</p><p>这是一段包含 <b>加粗</b> 的文本。</p><p>同样地,如果需要在HTML文档中显示空格,可以使用 实体:</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><p>这个 是用空格填充的段落。</p></pre><div class="contentsignin">Copy after login</div></div><p>上面这个例子使用了 实体来代表非断行空格,效果如下:</p><p>这个 是用空格填充的段落。</p><p>另外,HTML还支持一些十六进制Unicode实体,可以用于表示任意的Unicode字符。</p><p>例如,以下实体可以用来表示中文“网”字:</p><table><thead><tr><th>实体</th><th>字符</th><th>描述</th></tr></thead><tbody><tr><td><code>网</code></td><td>网</td><td>Unicode编码为0x7F51的字符</td></tr></tbody></table><p>所以,如果需要在HTML文档中显示中文“网”字,可以使用以下代码:</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><p>这是中文的“网”。</p></pre><div class="contentsignin">Copy after login</div></div><p>上面这个例子使用了 网 实体来代表中文“网”字,效果如下:</p> <p>这是中文的“网”。</p> <p>总之,HTML字符实体和转义字符可以帮助我们在HTML文档中正确显示特殊字符,是前端开发中必须掌握的基础知识之一。</p>

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