I am a bit novice in JS and trying to parse and XML file as a response via an AJAX call which is following format:
<chart>
<categories>
<name>'MSIE'</name>
<name>'Firefox'</name>
<name>'Chrome'</name>
<name>'Safari'</name>
<name>'Opera'</name>
</categories>
<name>'Browser Brands'</name>
<data>
<series>
<y>55.11</y>
<drilldown>
<name>'MSIE versions'</name>
<categories>
<name>'MSIE 8.0'</name>
<name>'MSIE 6.0'</name>
<name>'MSIE 7.0'</name>
<name>'MSIE 9.0'</name>
</categories>
<data>
<series>
<y>33.06</y>
<drilldown>
<name>'drilldown next level'</name>
<categories>
<name>'a'</name>
<name>'b'</name>
<name>'c'</name>
</categories>
<data>
<point>23</point>
<point>54</point>
<point>47</point>
</data>
</drilldown>
</series>
<point>10.85</point>
<point>7.35</point>
<point>2.41</point>
</data>
</drilldown>
</series>
<series>
<y>21.63</y>
<drilldown>
<name>'Firefox versions'</name>
<categories>
<name>'Firefox 3.6'</name>
<name>'Firefox 4.0'</name>
<name>'Firefox 3.5'</name>
<name>'Firefox 3.0'</name>
<name>'Firefox 2.0'</name>
</categories>
<data>
<point>13.52</point>
<point>5.43</point>
<point>1.58</point>
<point>0.83</point>
<point>0.20</point>
</data>
</drilldown>
</series>
<series>
<y>11.94</y>
<drilldown>
<name>'Chrome versions'</name>
<categories>
<name>'Chrome 10.0'</name>
<name>'Chrome 11.0'</name>
<name>'Chrome 8.0'</name>
<name>'Chrome 9.0'</name>
<name>'Chrome 12.0'</name>
<name>'Chrome 6.0'</name>
<name>'Chrome 5.0'</name>
<name>'Chrome 7.0'</name>
</categories>
<data>
<point>9.91</point>
<point>0.50</point>
<point>0.36</point>
<point>0.32</point>
<point>0.22</point>
<point>0.19</point>
<point>0.12</point>
<point>0.12</point>
</data>
</drilldown>
</series>
<series>
<y>7.15</y>
<drilldown>
<name>'Safari versions'</name>
<categories>
<name>'Safari 5.0'</name>
<name>'Safari 4.0'</name>
<name>'Safari Win 5.0'</name>
<name>'Safari 4.1'</name>
<name>'Safari/Maxthon'</name>
<name>'Safari 3.1'</name>
<name>'Safari 41'</name>
</categories>
<data>
<point>4.55</point>
<point>1.42</point>
<point>0.23</point>
<point>0.21</point>
<point>0.20</point>
<point>0.19</point>
<point>0.14</point>
</data>
</drilldown>
</series>
<series>
<y>2.14</y>
<drilldown>
<name>'Opera versions'</name>
<categories>
<name>'Opera 11.x'</name>
<name>'Opera 10.x'</name>
<name>'Opera 9.x'</name>
</categories>
<data>
<point>1.65</point>
<point>0.37</point>
<point>0.12</point>
</data>
</drilldown>
</series>
</data>
</chart>
So the repeating and traversing nodes I believe should be in following way:
series->drilldown->series->drilldown....
drilldown->categories
drilldown->data
Traversing path approach to be taken =
loop
{
for (mainseries)
{
get y
for(series->drilldown)
{
get name, categories(names), data(points)
for(drilldown->series)
{
mainseries = currentseries
}
}
}
}
As I am a novice I am somehow not getting the traversing and parsing logic which I want to implement:
$.get('ex.xml', function(xml) {
var $xml = $(xml);
$xml.find('chart categories name').each(function(i, category) {
options.xAxis.categories.push($(category).text());
});
chart.setTitle.push($xml.find('chart name').text());
$xml.find('series').each(function(i, series) {
var seriesOptions = {
y: parseInt($(series).find('y').text()),
drilldown : []
};
$xml.find('series drilldown').each(function(i, drilldown) {
name : $(drilldown).find('name').text()
categories : [],
data: []
$xml.find('drilldown categories').each(function(i, categories) {
name : $(categories).find('name').text()
});
$xml.find('drilldown data').each(function(i, data) {
$xml.find('data point').each(function(i, point) {
seriesOptions.drilldown.data.push(parseInt($(point).text()))
});
});
});
});
});
How can I have the traversing and each leaf / branch node be visited so that I can get the chart data, note that:
A series will never have values leaf node
A series is represented as a {..<property : values>..}
A series will always one drilldown and a drilldown will have one series in itself which goes in repetition
A series will always have a proerty y or a drilldown
A drilldown will have name leaf node,categories branch and either a another series or a data branch
A category branch will always have a name leaf node
A data branch will always have values leaf node
Please help me in achieveing the objective.
Thanks in advance
I think the key to the answer you’re looking for is to use the $(this) in jQuery. That is a self-referencing element within the each() function so that for each element, $(this) refers to that element.
With that in mind, you can then do:
Note that I am storing the $(this) reference to a variable so that the value is accessible within the function closure scope.
Hope this answers your question
Edit: example code for recursive depth search for your xml (haven’t been checked for syntax!)