Html5 Uncaught ref error

programming web dev
1

I’m trying to learn html5 and js, so I’m following a tutorial and when i try to call the javascript file it obviously isn’t called… why is this? I followed the tutorial exactly but can’t achieve the same results. The html and js file are in the same folder so what gives?

Here is html


<!doctype html>
<html lang="en">
    
    <head>
        
        <title>HTML5 Example</title>


        <script type="text/javascript" src="person2.js"></script>
        <script type="text/javascript">


            function init() {
                var lee = new Person("cool_guy", "3445 market street")
                lee.sayHello();
                console.log(lee);
            }


        </script>


    </head>


    <body onload="init()">
        
        
        
    </body>


</html>

here is javascript


(function(window) {


    function Person(name, address) {
        this.name = name;
        this.address = address;
    }


    Person.prototype.sayHello = function() {
        console.log(this.name + " says hello");
    };


    Person.SPECIES = "human";


}(window));