How do I access properties of a javascript object if I don't know the names?

Question

Say you have a javascript object like this:

var data = { foo: \'bar\', baz: \'quux\' };

You can access the properties by the property name:

Answer 1

You often will want to examine the particular properties of an instance of an object, without all of it's shared prototype methods and properties:

 Obj.prototype.toString= function(){
        var A= [];
        for(var p in this){
            if(this.hasOwnProperty(p)){
                A[A.length]= p+'='+this[p];
            }
        }

    return A.join(', ');
}