Defining props without domQL

domQL is pretty powerful and easy to use but sometimes we might need a bit more control on how we want to define a prop.
For this case we can use defineProp()

ayakashi.defineProp(function() {
    return this.document.getElementById("main");
}, "mainSection");

Make sure to return a html element (or multiple elements in an array).
We can then use the new mainSection prop like any other prop.
Standard prop behaviour also applies to props created with defineProp().

Note: It’s good practice to not reference window or document directly but instead get access to them through this.
That way the props can be re-used by any kind of scraper without depending on the environment.