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robbypelssers/gist:10757404

Created April 15, 2014 18:38
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Javascript Xpath Demo: xpath.js
Raw
gistfile1.js
/**
https://developer.mozilla.org/en-US/docs/Web/XPath
**/
requirejs([], function() {
//count the number of <li> tags
var listItemCount = document.evaluate( 'count(/html/body//li)', document, null, XPathResult.ANY_TYPE, null );
alert("There are " + listItemCount.numberValue + " <li> tags inside the <body> tag");
//output: There are 5 <li> tags inside the <body> tag
//stringjoin the values of the <li> nodes
var iterator = document.evaluate('/html/body//li', document, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE, null );
var listItem;
var listItemValues = [];
while (listItem = iterator.iterateNext()) {
listItemValues.push(listItem.textContent);
}
alert("The languages listed are '" + listItemValues.join() + "'.");
//output: The languages listed are 'Javascript,Java,Scala,Ceylon,Python'.
});
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