Why doesn't this code work ?

Question

https://code.sololearn.com/W0AeMqk3V08L
My expectation is the code prints "text"
It gives an error of onload.type() function is not defined. Can someone please explain why doesn't this code just work?
Thank you

Answer 1

You are trying to create an object which means you need the new keyword and brackets after it like so:
new onload()
Then the function:
new onload().type();
How you defined a method is incorrect, you don't use the name of the prototype but the "this" keyword because the prototype is not fully defined yet like so:
this.type = type;
Which can be shortened to:
this.type = function() {//code};
Or even:
this.type = () => {//code};

Changes:
https://code.sololearn.com/WjjQdKhZEYna/?ref=app

Answer 2

https://code.sololearn.com/WrJd7H9QY39h/?ref=app