Converting a simple XPath query to an E4X query

Question

One might think the corresponding E4X query for the XPath query, //*[@foo = "bar"], would be ..*.(@foo == "bar"), but that will throw an error whenever it gets to an element without a foo attribute. I am currently using ..*.(function::valueOf().@foo == "bar") instead.

My question is if there is another, less of a hack-way to do this.

Answer 1

little bit less hacky way might be using the attribute function:

..*.(function::attribute("foo") == "bar")