Js gets all the li under the element in two ways

Js gets all the li under the element

 
var content=document.getElementById("content"); 
var items=content.getElementsByTagName("ul"); 
var itemss=items[2].getElementsByTagName("li"); 

or

 
var div=document.getElementById('a'); 
var ul=div.childNodes.item(0); 
var lis=ul.childNodes; 
for(var i=0;i<lis.length;i++){ 
alert("Item "+i+": "+lis.item(i).innerHTML); 
}