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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?

2017/07/23
1
407
7/23/2017 11:42:45 AM

Accepted Answer

Try this:

var div = document.getElementById('divID');

div.innerHTML += 'Extra stuff';
2017/08/08
594
8/8/2017 9:28:17 PM


Beware of innerHTML, you sort of lose something when you use it:

theDiv.innerHTML += 'content';

Is equivalent to:

theDiv.innerHTML = theDiv.innerHTML + 'content';

Which will destroy all nodes inside your div and recreate new ones. All references and listeners to elements inside it will be lost.

If you need to keep them (when you have attached a click handler, for example), you have to append the new contents with the DOM functions(appendChild,insertAfter,insertBefore):

var newNode = document.createElement('div');
newNode.innerHTML = data;
theDiv.appendChild(newNode);
2020/07/13

If you want to do it fast and don't want to lose references and listeners use: .insertAdjacentHTML();

"It does not reparse the element it is being used on and thus it does not corrupt the existing elements inside the element. This, and avoiding the extra step of serialization make it much faster than direct innerHTML manipulation."

Supported on all mainline browsers (IE6+, FF8+,All Others and Mobile): http://caniuse.com/#feat=insertadjacenthtml

Example from https://developer.mozilla.org/en-US/docs/Web/API/Element/insertAdjacentHTML

// <div id="one">one</div>
var d1 = document.getElementById('one');
d1.insertAdjacentHTML('afterend', '<div id="two">two</div>');

// At this point, the new structure is:
// <div id="one">one</div><div id="two">two</div>
2016/05/20

If you are using jQuery you can use $('#mydiv').append('html content') and it will keep the existing content.

http://api.jquery.com/append/

2015/05/07

Even this will work:

var div = document.getElementById('divID');

div.innerHTML += 'Text to append';
2014/06/10

IE9+ (Vista+) solution, without creating new text nodes:

var div = document.getElementById("divID");
div.textContent += data + " ";

However, this didn't quite do the trick for me since I needed a new line after each message, so my DIV turned into a styled UL with this code:

var li = document.createElement("li");
var text = document.createTextNode(data);
li.appendChild(text);
ul.appendChild(li);

From https://developer.mozilla.org/en-US/docs/Web/API/Node/textContent :

Differences from innerHTML

innerHTML returns the HTML as its name indicates. Quite often, in order to retrieve or write text within an element, people use innerHTML. textContent should be used instead. Because the text is not parsed as HTML, it's likely to have better performance. Moreover, this avoids an XSS attack vector.

2020/06/20

Source: https://stackoverflow.com/questions/5677799
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