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HTML element: a

An <a> element with a href attribute represents a hyperlink.

Attributes specific to the <a> tag

Besides the global attributes, the <a> element has these specific attributes:

href
target (_blank, _self, _parent, _top or a context browsing name, use _blank to open in a new tab)
download
ping
rel
hreflang
type
referrerpolicy

The underlines of an <a> element can be removed by setting the CSS attribut text-decoration to none:

<style>
a {
  text-decoration: none;
}
</style>
…
<a href='xyz.html'>xyz</a>

There are essentially two ways to call a JavaScript function by clicking on a <a> element:

<a href='javascript:alert("hello world")'>Click me</a>
<a href='#' onclick='alert("good by"); return false;'>follow me</a>

In the HTML DOM API, the <a> element is, inconsistently, represented by an HTMLAnchorElement (not an HTMLAElement).

HTMLLinkElement is the DOM interface for the <link> element.