Hyperlink defines anchor
When you click a hyperlink, you jump directly to the position defined by the anchor point. For example, sometimes a "back to top" prompt appears after opening a web page, and you can click to go back to the top directly. The example picture is as follows:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<!--
超链接定义锚点
超链接找锚点
<a href="#锚点名称">链接名称</a>
定义锚点
<a name="名称">aaa</a>
-->
<body>
<h3> <a name="top"></a></h3>
<a href="#p1">产品1</a>
<a href="#p2">产品2</a>
<a href="#p3">产品3</a>
<a href="#p4">产品4</a>
<a href="#p5">产品5</a>
<hr >
<h3> <a name="p1">产品1</a></h3>
<img src="img/nike/1.png" />
<h3> <a name="p2">产品2</a></h3>
<img src="img/nike/2.png" />
<h3> <a name="p3">产品3</a></h3>
<img src="img/nike/3.png" />
<h3> <a name="p4">产品4</a></h3>
<img src="img/nike/4.png" />
<h3> <a name="p1">产品5</a></h3>
<img src="img/nike/5.png" />
<!-- 设置“返回顶部”的锚点点击可以迅速返回最顶部 -->
<h3 align="right"><a href="#top">返回顶部</a></h3>
</body>
</html>