Convert FusionCharts Data-XML To JavaScript Array

This is a snippet of JavaScript that would allow you to easily retrieve all “set” values from a FusionCharts data-XML in form of an Array.

One can use it to perform various mathematical or visual operations by retrieving the data-XML from FusionCharts object using the getXMLData() method and then passing on the same to this function.

<

pre lang=”javascript”>/**
* Returns all the values from FusionCharts data-xml in form of Array
* @id FusionChartsGetValues
*
* @return Array
* @type Array
*
* @code
* getValuesFromFusionChartsXML(sourceXML);
*
* @param sourceXML {String}
* @param forceSingleSeries {Boolean}
*
* @note
* The function returns double-dimension array for multi-series XML,
* but can be forced to return a single-dimension array
* forceSingleSeries=true
*/
getValuesFromFusionChartsXML = function(sourceXML, forceSingleSeries) {
// validate innput argument type
if(typeof sourceXML != “string”) {
throw “ArgumentException() :: sourceXML is not string.”;
}

var r = []; // array to store results

// in case of multi-series, recurse
var d = sourceXML.match(/<dataset[sS]*?</dataset>/ig);
if(!forceSingleSeries && d && d.length) {
    while(d && d.length){
        r.push(getValuesFromFusionChartsXML(d.pop(), true));
    }
    return r;
}

// parse set elements to retrieve values
var a = sourceXML.replace(/<set .*?value='(.*?)'|<set .*?value="(.*?)"/ig,
   function($1, $2, $3) { r.push(parseInt($2 || $3)); });

return r;
};

Download the above script: FusionCharts.XML2Array.js

How to use this script?

One needs to copy the above script within the section of a page or include it as a separate .js file. In either case, a JavaScript function will be created that accepts a valid FusionCharts data-XML as parameter.

Depending upon the type of the source XML (single-series or multi-series,) the function will return a single-dimension or two-dimensional Array containing the values of all set elements.

Sample Implementation Snippets

getValuesFromFusionChartsXML("<chart><set value="100" /><set value="50" /> </chart>"); will return an array of two integers in an Array [100, 50].

Retrieving the sum of all values from within a FusionCharts object:

function getSum(chartId) {
    var s = 0,
        v = getValuesFromFusionChartsXML(getChartFromId(chartId).getXMLData());

    while(v && v.length) {
        s += v.pop();
    }
    return s;
};

Profiling Results

The above code primarily uses regular-expressions to parse the data-XML instead of using any dedicated XML parser and consequently is extremely fast. It takes approximately 1.9ms to convert 2kb of data on Mozilla FireFox.