CODEWITHSUNDEEP
actionscript-3actionscript
Amir Arad
Amir Arad

Reputation: 6754

how do I add properties named by runtime arguments to an actionscript object?

I need a function that gets two array parameters of the same length: property-names (Strings) and property-values.

the function should create an object with properties so that, for an example, after calling

var obj:Object = makeObject({"prop1","prop2"},{1,2});

the testing condition (obj.prop1 == 1 && obj.prop2 == 2) should be true.

I'm led to believe that this should be an easy one if you know your actionscript - maybe it's just a syntax thing.

late addition
after re-reading my question, it appears It wasn't very easy to understand.
my problem was naming properties based on runtime values, that is, using a string parameter to refer a property name.

Upvotes: 0

Views: 1349

Answers (2)

Matt Dillard
Matt Dillard

Reputation: 14853

An Object can be treated like a map (or associative array) with strings for keys - I believe that's what you want to do. You can read up on associative arrays in Flex in Adobe's documentation.

private function makeObject( keys : Array, values : Array ) : Object
{
    var obj : Object = new Object();

    for( var i : int = 0; i < keys.length; ++i )
    {
        obj[ String(keys[i]) ] = values[i];
    }

    return obj;
}

This will create a new Object with keys equal to the values in the first array, and values equal to the items in the second array.

Upvotes: 3

Eric Belair
Eric Belair

Reputation: 10692

Not sure I understand your question, but you can create the Object using an Object literal:

var item:Object = {prop1: 1, prop2: 2};

trace (item.prop1 == 1 && item.prop2 == 2) // true

Upvotes: 3

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