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t-f-m/gist:893182

Created March 29, 2011 20:29
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XPathの動作確認
Raw
gistfile1.html
<html>
<head>
<script>
//utilities via AutoPagerize
function getElementsByXPath(xpath, node) {
var nodesSnapshot = getXPathResult(xpath, node,
XPathResult.ORDERED_NODE_SNAPSHOT_TYPE)
var data = []
for (var i = 0; i < nodesSnapshot.snapshotLength; i++) {
data.push(nodesSnapshot.snapshotItem(i))
}
return data
}
function getXPathResult(xpath, node, resultType) {
var node = node || document
var doc = node.ownerDocument || node
var resolver = doc.createNSResolver(node.documentElement || node)
// Use |node.lookupNamespaceURI('')| for Opera 9.5
var defaultNS = node.lookupNamespaceURI(null)
if (defaultNS) {
const defaultPrefix = '__default__'
xpath = addDefaultPrefix(xpath, defaultPrefix)
var defaultResolver = resolver
resolver = function (prefix) {
return (prefix == defaultPrefix)
? defaultNS : defaultResolver.lookupNamespaceURI(prefix)
}
}
return doc.evaluate(xpath, node, resolver, resultType, null)
}
function check(){
one=getElementsByXPath('id("one")/li[self::li/a/@href=preceding-sibling::li/a/@href]/a')
for(a=one[0],i=0;i<one.length;a=one[i],++i)
alert("one: "+a.title+" "+a.href)
two=getElementsByXPath('id("two")/li[self::li/a/@href=preceding-sibling::li/a/@href]/a')
for(a=two[0],i=0;i<two.length;a=two[i],++i)
alert("two: "+a.title+" "+a.href)
three=getElementsByXPath('id("three")/li[self::li/a/@href=preceding-sibling::li/a/@href]/a')
for(a=three[0],i=0;i<three.length;a=three[i],++i)
alert("three: "+a.title+" "+a.href)
one=getElementsByXPath('id("onedash")/li[substring-before(self::li/a/@href,"p")=substring-before(preceding-sibling::li/a/@href,"n")]/a')
for(a=one[0],i=0;i<one.length;a=one[i],++i)
alert("one': "+a.title+" "+a.href)
two=getElementsByXPath('id("twodash")/li[substring-before(self::li/a/@href,"p")=substring-before(preceding-sibling::li/a/@href,"n")]/a')
for(a=two[0],i=0;i<two.length;a=two[i],++i)
alert("two': "+a.title+" "+a.href)
three=getElementsByXPath('id("threedash")/li[substring-before(self::li/a/@href,"p")=substring-before(preceding-sibling::li/a/@href,"n")]/a')
for(a=three[0],i=0;i<three.length;a=three[i],++i)
alert("three': "+a.title+" "+a.href)
}
window.onload=check
</script>
</head>
<body>
<ul id="one">
<li><a href="0000" title="prev">prev</a></li>
<li><a href="0001" title="main">main</a></li>
<li><a href="0001" title="next">next</a></li>
</ul>
<ul id="two">
<li><a href="0001" title="prev">prev</a></li>
<li><a href="0001" title="main">main</a></li>
<li><a href="0001" title="next">next</a></li>
</ul>
<ul id="three">
<li><a href="0001" title="prev">prev</a></li>
<li><a href="0001" title="main">main</a></li>
<li><a href="0002" title="next">next</a></li>
</ul>
<ul id="onedash">
<li><a href="0000p" title="prev">prev</a></li>
<li><a href="0001n" title="main">main</a></li>
<li><a href="0001p" title="next">next</a></li>
</ul>
<ul id="twodash">
<li><a href="0001p" title="prev">prev</a></li>
<li><a href="0001n" title="main">main</a></li>
<li><a href="0001p" title="next">next</a></li>
</ul>
<ul id="threedash">
<li><a href="0001p" title="prev">prev</a></li>
<li><a href="0001n" title="main">main</a></li>
<li><a href="0002p" title="next">next</a></li>
</ul>
</body>
</html>
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