Question

function myClass(a,b,c) {
     this.alertMyName=function(){alert(instancename)}

{...}


}

and then

foo = myClass(a,b,c);
boo = myClass(a,b,c);

foo.alertMyName(); //it should alert 'foo'
boo.alertMyName(); //it should alert 'boo'

In practice I’ll need it for class that is creating a lot of html objects to prefix their ID’s to differentiate them from same object created by another instance of this class.

Answer 1

Further to David’s answer, variables in javascript have a value that is either a primitive or a reference to an object. Where the value is a reference, then the thing it references has no idea what the “name” of the variable is.

Consider:

var foo = new MyThing();
var bar = foo;

So now what should foo.alertMyName() return? Or even:

(new MyThing()).alertMyName();

If you want instances to have a name, then give them a property and set its value to whatever suits.