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Answer 1

+2 A:

import flash.utils.describeType;
...
function methodExists(obj:Object,name:String):Boolean
{
        var desc:XML=flash.utils.describeType(obj);
        return (desc.method.(@name==name).length()>0);
}

(Note: done off the top of my head)

Jason B 2010-01-31 04:35:10

`describeType` does not list dynamic properties. Try it on this object for instance: `var target:Object = {a:123, b:"ASD", c:function():void{trace("hello");}}` - outputs the description of a plain object with just `hasOwnProperty`, `isPrototypeOf` and `propertyIsEnumerable`.

Amarghosh 2010-01-31 10:07:04

Answer 2

+3 A:

var target:Object;// = some object
var name:String;// = some name
if(name in target){
    // if property/method exists
}else{
    // if property/method not exists
}

a_w 2010-01-31 08:41:12

+1 But note that this won't list private/protected properties/functions of the object.

Amarghosh 2010-01-31 10:10:55

yea, i probably wont need it if its private or protected. thanks

numerical25 2010-01-31 19:20:47

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Check to see if a class has a method

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