function getElementsByXPath(xpath, parent)
{
let results = [];
let query = document.evaluate(xpath,
parent || document,
null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
for (let i=0, length=query.snapshotLength; i<length; ++i) {
results.push(query.snapshotItem(i));
}
return results;
}
getElementsByXPath('/html/body//h2')[0].innerText;
getElementsByXPath('/html/body//h2')[1].innerText;
