<ul id="ul1">

  <li id="li1" class="class1">001</li>

  <li id="li2" class="class1">002</li>

  <li id="li3" class="class1">003</li>

  <li id="li4" class="class1">004</li>

  <li id="li5" class="class1">005</li>

</ul>

var oUl=document.getElementById("ul1");

var oLi=document.getElementsByTagName("li");

​

var x=oUl.attributes;

var y=document.body.childNodes[1].childNodes[1].classList.add("class2")

//var z=document.body.childNodes[1].childNodes[1].contentEditable=true

var a=document.body.childNodes[1].childNodes[1].nextSibling.nextSibling.parentNode.id;

function myfun1(){

  alert("ok")

}

oLi[0].addEventListener("click",myfun1);

oLi[1].addEventListener("click",myfun1);

oLi[0].removeEventListener("click",myfun1);

​

var node=document.body.childNodes[1].childNodes[1].cloneNode(true);

oUl.appendChild(node);

​

var b=oUl.getAttributeNode("id").nodeType;

var c=oUl.hasAttribute("id");

​

document.write(c+"<br>")

document.write(b+"<br>")

document.write(a+"<br>")