Test that different ways of changing an element's id all work properly. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". 1. Check id after parsing. PASS document.getElementById("a") is document.body PASS document.body.id is "a" PASS document.body.getAttributeNode("id").isId is true PASS document.body.getAttributeNode("id").textContent is "a" 2. Change Attr.value. PASS document.getElementById("a") is null PASS document.getElementById("b") is document.body PASS document.body.getAttributeNode("id").textContent is "b" 3. Change HTMLElement.id. PASS document.getElementById("b") is null PASS document.getElementById("c") is document.body PASS document.body.getAttributeNode("id").textContent is "c" 4. Change id attribute via setAttribute(). PASS document.getElementById("c") is null PASS document.getElementById("d") is document.body PASS document.body.getAttributeNode("id").textContent is "d" 5. Change id attribute via setAttributeNS(). PASS document.getElementById("d") is null PASS document.getElementById("e") is document.body PASS document.body.getAttributeNode("id").textContent is "e" 6. Change Attr.nodeValue. PASS document.getElementById("e") is null PASS document.getElementById("f") is document.body PASS document.body.id is "f" PASS document.body.getAttribute("id") is "f" PASS attrNode.textContent is "f" PASS attrNode.childNodes.length is 1 7. Attr.replaceChild(). PASS document.getElementById("f") is null PASS document.getElementById("g") is document.body PASS document.body.id is "g" PASS document.body.getAttribute("id") is "g" PASS attrNode.textContent is "g" PASS attrNode.childNodes.length is 1 8. Attr.insertBefore(). PASS document.getElementById("g") is null PASS document.getElementById("0g") is document.body PASS document.body.id is "0g" PASS document.body.getAttribute("id") is "0g" PASS attrNode.textContent is "0g" PASS attrNode.childNodes.length is 2 9. attr.appendChild(). PASS document.getElementById("0g") is null PASS document.getElementById("0g2") is document.body PASS document.body.id is "0g2" PASS document.body.getAttribute("id") is "0g2" PASS attrNode.textContent is "0g2" PASS attrNode.childNodes.length is 3 10. Attr.removeChild() PASS document.body.getAttributeNode("id").childNodes.length is 0 PASS document.getElementById("h") is null PASS document.getElementById("") is null PASS document.body.id is "" PASS document.body.getAttribute("id") is "" PASS document.body.getAttributeNode("id").textContent is "" 11. Changing Text.nodeValue. PASS attrNode.firstChild.nodeValue is "i" PASS document.getElementById("i") is document.body PASS document.body.id is "i" PASS document.body.getAttribute("id") is "i" PASS attrNode.textContent is "i" PASS attrNode.childNodes.length is 1 12. Chnaging Attr.textContent. PASS document.getElementById("i") is null PASS document.getElementById("hi") is document.body PASS document.body.id is "hi" PASS document.body.getAttribute("id") is "hi" PASS attrNode.textContent is "hi" PASS attrNode.childNodes.length is 1 13. Text.splitText(). PASS document.getElementById("hi") is document.body PASS document.body.id is "hi" PASS document.body.getAttribute("id") is "hi" PASS document.body.getAttributeNode("id").textContent is "hi" PASS document.body.getAttributeNode("id").childNodes.length is 2 14. Node.normalize(), joining text nodes. PASS document.getElementById("hi") is document.body PASS document.body.id is "hi" PASS document.body.getAttribute("id") is "hi" PASS document.body.getAttributeNode("id").textContent is "hi" PASS document.body.getAttributeNode("id").childNodes.length is 1 15. Changing Attr.nodeValue. PASS document.getElementById("hi") is null PASS document.getElementById("j") is document.body PASS document.body.id is "j" PASS document.body.getAttribute("id") is "j" PASS attrNode.textContent is "j" PASS attrNode.childNodes.length is 1 16. Changing Text.data. PASS document.getElementById("j") is null PASS document.getElementById("k") is document.body PASS document.body.id is "k" PASS document.body.getAttribute("id") is "k" PASS attrNode.textContent is "k" PASS attrNode.childNodes.length is 1 17. Changing text child with appendData(). PASS document.getElementById("k") is null PASS document.getElementById("kl") is document.body PASS document.body.id is "kl" PASS document.body.getAttribute("id") is "kl" PASS attrNode.textContent is "kl" PASS attrNode.childNodes.length is 1 18. Changing text child with insertData(). PASS document.getElementById("kl") is null PASS document.getElementById("k1l") is document.body PASS document.body.id is "k1l" PASS document.body.getAttribute("id") is "k1l" PASS attrNode.textContent is "k1l" PASS attrNode.childNodes.length is 1 19. Changing text child with deleteData(). PASS document.getElementById("k1l") is null PASS document.getElementById("l") is document.body PASS document.body.id is "l" PASS document.body.getAttribute("id") is "l" PASS attrNode.textContent is "l" PASS attrNode.childNodes.length is 1 20. Changing text child with replaceData(). PASS document.getElementById("l") is null PASS document.getElementById("mn") is document.body PASS document.body.id is "mn" PASS document.body.getAttribute("id") is "mn" PASS attrNode.textContent is "mn" PASS attrNode.childNodes.length is 1 21. Remove an Attr node. PASS document.body.id is "" PASS document.getElementById("mn") is null PASS document.body.getAttribute("id") is null PASS document.body.getAttributeNode("id") is null 22. Add an Attr node. PASS document.getElementById("o") is document.body PASS document.body.id is "o" PASS document.body.getAttribute("id") is "o" 23. Add an Attr node over an existing one. PASS document.getElementById("o") is null PASS document.getElementById("p") is document.body PASS document.body.id is "p" PASS document.body.getAttribute("id") is "p" PASS successfullyParsed is true TEST COMPLETE