Question

I have some XML nodes in AS3 which I can successfully reference using:

serverXML.wednesday.morning.title

I hace a variable called dayOfWeek that has the value “wednesday” but of course this doesn’t work:

serverXML.dayOfWeek.morning.title

How can I use variables to reference XML nodes?

Answer 1

If you are using E4X notation to reference XML in AS3, you can do this to get the first match:

serverXML.item.(@dayOfWeek == "wednesday")[0].morning.title

would return the title node, assuming:

serverXML = <data>
<item dayOfWeek="friday"></item>
<item dayOfWeek="wednesday">
  <morning>
    <title>target</title>
  </morning>
</item>
</data>

if there’s a chance that there is no node with the attribute match, assign it to an XMLList first to prevent errors:

var foo:XMLList = serverXML.item.(@dayOfWeek == "wednesday");

check that it has length, then reference.