topic Using Prototype in ArcGIS JavaScript Maps SDK Questions

Using Prototype

LTran — Tue, 28 May 2013 02:19:57 GMT

Here's my code:

var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");


var Shape = function(){}

Shape.prototype.Circle = function(){
 // Some code here
};

Shape.prototype.Square = function(){
 // Some code here
};


MainMenu.prototype = new Shape();

var MainMenu = function(ctx){
   this.draw{
 this.Circle();
 this.Square();
   }
}

What I want to do is to call the Circle() and Square() function inside my draw() function.
But it doesn't work.
Is this even possible??
I'm going crazy trying to figure this out!!

Re: Using Prototype

VinayBansal — Sun, 12 Dec 2021 07:49:45 GMT

<html>
<head>
    <title></title>
    <script type="text/javascript" language="javascript">
        var Shape = function () { }

        Shape.prototype.Circle = function () {
            alert("Calling circle");
        };

        Shape.prototype.Square = function () {
            alert("Calling Square");
        };

        var MainMenu = new Shape();

        MainMenu.draw = function (ctx) {            
            this.Circle();
            this.Square();
        };

        function callThisOne() {
            MainMenu.draw(null);
        }
    </script>
</head>
<body>
    <input type="button" value="Click" onclick="callThisOne();" />
</body>
</html>

Try this way.....