JavaScript Events (Part 2)-lesson query

Hi,
In the JavaScript Events (Part 2), you have used “this.value” in the following code:

<input onkeyup="change_paragraph_text(this.value)">

this was new, and from were we can know about such features?, I mean which document/site to lookup for such available options?

@sujitth this is used to target the current object, in this case, it’s the input element in the DOM, this.value will refer to the value of the input element whatever we type into it.

You may look up the documentation about any feature you don’t understand here. Also check this out to learn more about this keyword.