How to append data to div using JavaScript?

Question

I\'m using AJAX to append data to div element, where I fill the div from JavaScript, how can I append new data to the div without losing the previous data found in div?

Answer 1

Using appendChild:

var theDiv = document.getElementById("");
var content = document.createTextNode("");
theDiv.appendChild(content);

Using innerHTML:
This approach will remove all the listeners to the existing elements as mentioned by @BiAiB. So use caution if you are planning to use this version.

var theDiv = document.getElementById("");
theDiv.innerHTML += "";