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99 lines
3.1 KiB
HTML
99 lines
3.1 KiB
HTML
<!DOCTYPE html>
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<meta charset=utf-8>
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<title>Node.childNodes</title>
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<link rel=help href="https://dom.spec.whatwg.org/#dom-node-childnodes">
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<link rel=author title="Tim Taubert" href="mailto:ttaubert@mozilla.com">
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<link rel=author title="Ms2ger" href="mailto:Ms2ger@gmail.com">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div id="log"></div>
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<script>
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test(function() {
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var element = document.createElement("p");
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assert_equals(element.childNodes, element.childNodes);
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}, "Caching of Node.childNodes");
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var check_parent_node = function(node) {
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assert_array_equals(node.childNodes, []);
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var children = node.childNodes;
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var child = document.createElement("p");
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node.appendChild(child);
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assert_equals(node.childNodes, children);
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assert_array_equals(children, [child]);
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assert_equals(children.item(0), child);
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var child2 = document.createComment("comment");
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node.appendChild(child2);
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assert_array_equals(children, [child, child2]);
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assert_equals(children.item(0), child);
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assert_equals(children.item(1), child2);
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assert_false(2 in children);
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assert_equals(children[2], undefined);
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assert_equals(children.item(2), null);
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};
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test(function() {
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check_parent_node(document.createElement("p"));
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}, "Node.childNodes on an Element.");
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test(function() {
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check_parent_node(document.createDocumentFragment());
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}, "Node.childNodes on a DocumentFragment.");
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test(function() {
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check_parent_node(new Document());
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}, "Node.childNodes on a Document.");
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test(function() {
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var node = document.createElement("div");
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var kid1 = document.createElement("p");
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var kid2 = document.createTextNode("hey");
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var kid3 = document.createElement("span");
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node.appendChild(kid1);
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node.appendChild(kid2);
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node.appendChild(kid3);
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var list = node.childNodes;
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assert_array_equals([...list], [kid1, kid2, kid3]);
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var keys = list.keys();
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assert_false(keys instanceof Array);
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keys = [...keys];
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assert_array_equals(keys, [0, 1, 2]);
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var values = list.values();
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assert_false(values instanceof Array);
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values = [...values];
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assert_array_equals(values, [kid1, kid2, kid3]);
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var entries = list.entries();
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assert_false(entries instanceof Array);
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entries = [...entries];
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assert_equals(entries.length, keys.length);
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assert_equals(entries.length, values.length);
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for (var i = 0; i < entries.length; ++i) {
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assert_array_equals(entries[i], [keys[i], values[i]]);
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}
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var cur = 0;
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var thisObj = {};
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list.forEach(function(value, key, listObj) {
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assert_equals(listObj, list);
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assert_equals(this, thisObj);
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assert_equals(value, values[cur]);
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assert_equals(key, keys[cur]);
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cur++;
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}, thisObj);
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assert_equals(cur, entries.length);
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assert_equals(list[Symbol.iterator], Array.prototype[Symbol.iterator]);
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assert_equals(list.keys, Array.prototype.keys);
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if (Array.prototype.values) {
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assert_equals(list.values, Array.prototype.values);
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}
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assert_equals(list.entries, Array.prototype.entries);
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assert_equals(list.forEach, Array.prototype.forEach);
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}, "Iterator behavior of Node.childNodes");
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</script>
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