Created
October 24, 2008 16:06
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// $XA | |
// | |
// $XA(exp, context, resolver)(function(node){}); | |
function $XA(exp, context, resolver) { | |
context || (context = document); | |
var XPE = new XPathEvaluator(); | |
var Doc = context.ownerDocument || context, expr = XPE.createExpression(exp, resolver ? resolver : | |
Doc.documentElement.namespaceURI ? function(prefix) { | |
return XPE.createNSResolver(Doc.documentElement).lookupNamespaceURI(prefix) || | |
context.namespaceURI || document.documentElement.namespaceURI || ""; | |
} : null); | |
var result = expr.evaluate(context, XPathResult.ANY_TYPE, null); | |
switch (result.resultType) { | |
case XPathResult.STRING_TYPE : return function(fnc,thisObject) {fnc.call(thisObject,result.stringValue);}; | |
case XPathResult.NUMBER_TYPE : return function(fnc,thisObject) {fnc.call(thisObject,result.numberValue);}; | |
case XPathResult.BOOLEAN_TYPE: return function(fnc,thisObject) {fnc.call(thisObject,result.booleanValue);}; | |
case XPathResult.UNORDERED_NODE_ITERATOR_TYPE: | |
result = expr.evaluate(context, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, result); | |
return function(fnc, thisObject) { | |
for (var i = 0, len = result.snapshotLength; i < len; i++) { | |
fnc.call(thisObject, result.snapshotItem(i)); | |
} | |
}; | |
} | |
return null; | |
} |
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