We have already considered some popular tags (html, body, head, p, h1). These tags can also contain attributes - strings in tags that provide us with additional information about code in tags. The attribute in a tag is followed by an equals sign, followed by information about that attribute in the tag code. For example:

<div id = "2" class = "class1">
…
</div>

There is a div tag with 2 extremely common attributes: id and class. Here the id is a unique identifier to our tag, which helps to find it. The attribute id should be used once for one tag. The attribute class doesn’t need to be unique as this specifies which class belongs to the tag. Many tags can belong to the same class. The tag can also belong to multiple classes (multiple class names will be separated by spaces).

You can also look at the pages we worked with to see their attributes.

The tag <a> defines a hyperlink. The attribute href help to define the URL of the website where the link goes:

<a href = "https://codefinity.com/">Visit Codefinity!</a>

The result:

There are many different tag types and attributes (depending on the tags they belong to). We will not go through all these tags! In the following chapters, we will explore methods to help us find information using attributes.