Absolute links are easy to create, since they include the full path to the resource. Local links are a little harder, in the sense that the full path is not required, but rather it is relative between the document that contains the link and the file being linked to. The relative path has several advantages: paths are usually short, and will not change if entire site is moved to another server or domain.
Sometimes you want to give something the appearance of a link, but not actually link to anything. This can be particularly useful when activating a JavaScript function, for example. However, we have a small problem:
An anchor is a named point in a page, invisible to the viewer, embedded in code. By using an <a> link you can navigate to not only a specific page, but also a specific location on that page. This is particularly useful when you have very long pages, and want to give the user the ability to navigate to a specific section (for example, in a long article or essay written on a single page).
First, you need to create an anchor point. This is achieved by adding an id attribute to the tag nearest the point your want to jump to: usually, but not exclusively, a heading element. Note that the id attribute value must be unique to that page. For example, a heading element with an id of introduction:
