Meaning of this: functions in the global scope

by somya_kashyap3

HTML

<h3>Open your console to see the output</h3>
<p>You can see here that <i>this</i> gets the value of the context from which the function was called.  Remember that variables declared in the global context are actually properties of the Window object.</p>
<p> So <code>sayIt()</code> is actually <code>window.sayIt()</code>  </p>
<p> and so, inside sayIt(), the value of <i>this</i> is the window object. </p>

JavaScript

function AddrBookEntry(f, l, a, e) {
this.fname = f;
this.lname = l;
this.addr = a;
this.email = e;

this.personRole = "student";
this.getFullName = function(){
return this.fname + " " + this.lname;
}
}

AddrBookEntry("Sarah", "Connor", "Los Angeles", "[email protected]");
console.log(window.fname);