where does append add the new elements javascript code example

Example 1: create and append element in javascript

//create and append element
 var node = document.createElement("LI");                 // Create a <li> node

 var textnode = document.createTextNode("Water");         // Create a text node

 node.appendChild(textnode);                              // Append the text to <li>

 document.getElementById("myList").appendChild(node);

Example 2: how to append in javascript

var list=[1, 2, 3, 4, 5];
list.push(6);
// .push allows you to add a value to the end of a list