Hi, I'm having trouble extending instances of ActiveXObject using
Object.extend in IE.
I'm getting the message: "Object doesn't support this property or
method"
Here's my sample code, to show working and non-working examples:
var newDef = {
foo : function(){
return "hey there";
}
};
alert("starting");
var string;
var doc;
var obj;
try{
if(typeof ActiveXObject == "undefined"){
doc = document.implementation.createDocument("", "", null);
}else{
doc = new ActiveXObject("Microsoft.XMLDOM");
}
Object.extend(doc, newDef);
alert("1 object Extended");
// FF: this message is displayed
}catch(e){
alert("2 " + e.description);
// IE : this message is displayed.
}
if(typeof ActiveXObject != "undefined"){
try{
Object.extend(ActiveXObject.prototype, newDef);
alert("3 extended ActiveXObject.prototype");
// IE : this message is displayed
doc = new ActiveXObject("Microsoft.XMLDOM");
try{
var text = doc.foo();
alert("4 " + text);
}catch(e){
alert("5 " + e.description);
// IE : this message is displayed
}
}catch(e){
alert("6 " + e.description);
}
}
try{
obj = new Object();
Object.extend(obj, newDef);
alert("7 extended string");
// IE & FF : this message is displayed.
}catch(e){
alert("8 " + e.description);
}
try{
alert("9 " + obj.foo());
// IE & FF: this message is displayed.
}catch(e){
alert("10 " + e.description);
}
try{
string = "hey";
Object.extend(String.prototype, newDef);
alert("11 " + string.foo());
// IE & FF : this message is displayed.
}catch(e){
alert("12 " + e.description);
}
the problem areas for me are messages 2 and 5. Is there a reason I
can't extend the ActiveXObject instance, or if, when I extend the
prototype, I can't actually use the methods defined?
I'm able to extend the document instance firefox creates, and I was
really hoping to use the same approach in IE. Is there a workaround?
Sorry if maybe I've posted this twice...
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