This and the DOM
The this keyword always has a relative meaning; it depends on the exact context it is in. In the DOM, the special this keyword refers to the element of the DOM it belongs to. If we specify an onclick to send this in as an argument, it will send in the element the onclick is in.
Here is a little HTML snippet with JavaScript in the script tag:
<!DOCTYPE html>
<html>
<body>
<script>
function reveal(el){
console.log(el);
}
</script>
<button onclick="reveal(this)">Click here!</button>
</body>
</html>
And this is what it will log:
<button onclick="reveal(this)">Click here!</button>
As you can see, it is logging the element it is in, the button element.
We can access the parent of this with a function like this:
function reveal(el){
console.log(el.parentElement);
}
In the above example, the body is the parent of...
