Question

44

Replace element contents with document fragment javascript

rated 0 times [ 47] [ 3] / answers: 1 / hits: 18242 / 12 Years ago, fri, november 9, 2012, 12:00:00

I'm trying to replace all contents of an element with a document fragment:

var frag = document.createDocumentFragment()

The document fragment is being created just fine. No problems there. I add elements to it just fine, no problems there either. I can append it using element.appendChild(frag). That works just fine too.

I'm trying to create a replace method similar to jQuery's HTML. I'm not worried about old-browser compatibility. Is there a magical function to replace all content of an element?

I have tried element.innerHTML = frag.cloneNode(true), (as per every 'replace element content' wiki I could find), that doesn't work. It gives me <div>[object DocumentFragment]</div>.

No libraries, please, not even a jQuery solution.

For clarity, I'm looking for a magic solution, I know how to remove all the existing elements one at a time and then append my fragment.

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agustindejonm

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answered 12 Years ago samsons · Accepted Answer

Have you tried replaceChild

something like this

element.parentNode.replaceChild(frag, element)

source: https://developer.mozilla.org/en-US/docs/DOM/Node.replaceChild

original jsFiddle: http://jsfiddle.net/tomprogramming/RxFZA/

EDIT: ahh, I didn't see replace contents. Well, just remove them first!

element.innerHTML = ;

element.appendChild(frag);

jsfiddle: http://jsfiddle.net/tomprogramming/RxFZA/1/

note that in the jsfiddle, I only use jquery to hook up the button, the entirety of the click handler is raw javascript.

Edit2: also suggested by pimvdb, but just append the new stuff to a detached element and replace.

var newElement = element.cloneNode();

newElement.innerHTML = ;

newElement.appendChild(frag);

element.parentNode.replaceChild(newElement, element);

http://jsfiddle.net/tomprogramming/RxFZA/3/