Question

174

Count the number of nodes in an XML snippet using Javascript/E4X

rated 0 times [ 175] [ 1] / answers: 1 / hits: 27067 / 15 Years ago, tue, july 21, 2009, 12:00:00

Consider this problem:

Using Javascript/E4X, in a non-browser usage scenario (a Javascript HL7 integration engine), there is a variable holding an XML snippet that could have multiple repeating nodes.

<pets>       

 <pet type=dog>Barney</pet>

 <pet type=cat>Socks</pet>

</pets>

Question: How to get the count of the number of pet nodes in Javascript/E4X ?

EDIT: To clarify, this question should be around E4X (ECMAScript for XML). Apologies to those who answered without this information. I should have researched & posted this info beforehand.

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answered 15 Years ago lesli · Accepted Answer

Use an E4X XML object to build an XMLList of your 'pet' nodes. You can then call the length method on the XMLList.

//<pets>

//    <pet type=dog>Barney</pet>

//    <pet type=cat>Socks</pet>

//</pets>  



// initialized to some XML resembling your example

var petsXML = new XML();  



// build XMLList

var petList = petsXML['pet'];  



// alternative syntax

// var petList = petsXML.pet;  



// how many pet nodes are under a given pets node?

var length = petList.length();