CODEWITHSUNDEEP
javascripthtmlxmlxquery
scifirocket
scifirocket

Reputation: 1051

Querying XML in Javascript

I'm at a loss as to how to go about querying an XML file using Javascript. It's possible this isn't something XML is really suited for (i know a fully featured database might be a better option). I've looked into tools like XQuery, but I don't know how or if this is something I can use. Do browsers support XQuery? Can I write XQuery statements in Javascript files in such a way that I can use the results in other javascript functions? Any help would be appreciated.
Here is some context:

$.ajax({

    url: "http://api.wunderground.com/api/test.json",
    dataType: "jsonp",
    success: function (parsed_json) {
        //do stuff with json file
    $.ajax({
        type: "GET",
        url: "weather_map.xml",
        dataType: "xml",
        success: function(xml) {
            var value = $(xml).find('condition[name="Clear"]').text();
            alert(value);
                    // do stuff with XML file
        }
    });
        //do more stuff with json file
 });

Upvotes: 4

Views: 9812

Answers (5)

evil otto
evil otto

Reputation: 10582

E4X support is in some browsers, but I don't know how wide the coverage is. It's not xquery, but it is a very natural way of processing xml data in javascript. 

var x=new XML("<root><el>hello, world</el></root>");
alert(x.el);

A good guide to E4X is http://rephrase.net/days/07/06/e4x

Upvotes: 0

wcandillon
wcandillon

Reputation: 2156

Did you consider XQuery in the browser from http://xqib.org?

There is a nice demo there: http://xqueryguestbook.my28msec.com/

Upvotes: 0

JaredPar
JaredPar

Reputation: 754545

One of the easiest ways to process XML in JavaScript is to use jQuery. This is a very common JavaScript library which can be used to process XML files. For example

var xml = '<students><student name="bob" last="smith"/><student name="john" last="doe"/></students>';
var value = $(xml).find('student[name="bob"]').attr('last');
console.log(value);  // prints: smith

Nice Tutorial: http://www.switchonthecode.com/tutorials/xml-parsing-with-jquery

Upvotes: 4

Birey
Birey

Reputation: 1802

Have a look at http://www.w3schools.com/dom/dom_loadxmldoc.asp

Upvotes: 0

Mike
Mike

Reputation: 1899

for $x in doc("books.xml")/bookstore/book
where $x/price>30
order by $x/title
return $x/title

Upvotes: 0

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