HTML area alt 属性

<area> 元素的 alt 属性用于为区域设置替代文本。当图像由于网络问题、加载问题、错误等原因无法显示时，此替代文本(即 alt)可见。

以下是语法 −

<area alt="text">

这里的 text 是要设置的 alt 文本。

现在让我们看一个实现 <area> 元素 alt 属性的示例 −

示例

<!DOCTYPE html>
<html>
<body>
<h2>Learning</h2>
<p>Learn these technologies with ease....</p>
<img src = /images/usemap.gif alt = "usemap" border = "0" usemap = "#tutorials"/>
<map name = "tutorials">
   <area shape = "poly" coords = "74,0,113,29,98,72,52,72,38,27"
   href = "/perl/index.htm" alt = "Perl Tutorial" target = "_blank" />
   <area shape = "rect" coords = "22,83,126,125" alt = "HTML Tutorial"
   href = "/html/index.htm" target = "_blank" />
   <area shape = "circle" coords = "73,168,32" alt = "PHP Tutorial"
   href = "/php/index.htm" target = "_blank" />
</map>
</body>
</html>

输出

在上面的例子中，我们在下图中设置了地图 −

<img src = /images/usemap.gif alt = "usemap" border = "0" usemap = "#tutorials"/>

现在，我们已经为形状设置了地图及其内部区域 −

<map name = "tutorials">
   <area shape = "poly" coords = "74,0,113,29,98,72,52,72,38,27"
   href = "/perl/index.htm" alt = "Perl Tutorial" target = "_blank" />
   <area shape = "rect" coords = "22,83,126,125" alt = "HTML Tutorial"
   href = "/html/index.htm" target = "_blank" />
   <area shape = "circle" coords = "73,168,32" alt = "PHP Tutorial"
   href = "/php/index.htm" target = "_blank" />
</map>

在设置区域时，还使用 ​​alt 属性设置 alt −

<area shape = "poly" coords = "74,0,113,29,98,72,52,72,38,27" href = "/perl/index.htm" alt = "Perl Tutorial" target = "_blank" />

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有用资源

• html 参考教程 - 该教程包含有关 html 的更多信息:https://www.cainiaomax.com/html/