document.___() used to remove an HTML element

The method you're referring to is document.removeChild(). Here's how you can use it:

1. First, you need to get the parent element of the HTML element you want to remove. You can do this using various methods like document.getElementById(), document.getElementsByClassName(), document.getElementsByTagName(), etc. For example, if the parent element has an id of 'parent', you can get it like this:

var parentElement = document.getElementById('parent');

2. Next, get the HTML element you want to remove. Again, you can use the same methods as above. If the element to be removed has an id of 'child', you can get it like this:

var childElement = document.getElementById('child');

3. Now you can remove the child element from the parent element using removeChild() method:

parentElement.removeChild(childElement);

This will remove the 'child' element from the 'parent' element.