The `` element in HTML5 is used to attach machine-readable data to a particular content. This data can be used by developers to provide more detailed information about the content and can be accessed using JavaScript.
Let’s look at an example of how to use data element in HTML5:
```
Welcome to HTML5 tutorial!
```
In the above example, `value=“HTML5”` is the machine-readable content associated with the `data` element.
Accessing through JavaScript:
With the help of JavaScript, the value of the `data` attribute can be extracted. In the above example, we have used `document.querySelector` to select the `data` element and `elem.value` to get its value.
Note: The `data` element is not very well supported across all browsers, so make sure to use it where support is guaranteed, or have fallback for unsupported browsers.
