javascript remove all child nodes javascript / jquery

JavaScript performance comparison

Revision 297 of this test case created by eight

Preparation code

<div id="box"></div>

<script>
var boxAnchor, box, i, b, range;

boxAnchor = document.createElement('div');
boxAnchor.style.cssText="white-space:nowrap";
boxAnchor.id = 'box';

for (i = 0; i < 1000; i++) {
	b = document.createElement('B');
	b.appendChild(document.createTextNode('asdf fewf'));
	boxAnchor.appendChild(b);
}
box = document.getElementById('box');

// Clone boxAnchor to box
function refreshRange() {
	var newBox = boxAnchor.cloneNode(true);
	box.parentNode.replaceChild(newBox, box);
	box = newBox;
}

</script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

    

Preparation code output

<div id="box"></div>

Test runner

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Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
removeChild Recheck
refreshRange();
while (box.firstChild) 
  box.removeChild(box.firstChild);
pending…
removeChild lastChild with reference
refreshRange();
    var last;
    while ((last = box.lastChild)) box.removeChild(last);
pending…
firstChild haschildnodes() check
refreshRange();
while(box.hasChildNodes())
  box.removeChild(box.firstChild);
pending…
deletecontents (IE9+)
refreshRange();
var range = document.createRange();
range.selectNodeContents(box);
range.deleteContents();
pending…
replaceChild cloneNode(shallow) (DESTRUCTIVE)
refreshRange();
var newBox = box.cloneNode(false);
box.parentNode.replaceChild(newBox,box);
box=newBox;
pending…
removeChild then reAttach
refreshRange();
var parent = box.parentNode;
var next = box.nextSibling;
parent.removeChild(box);
while(box.hasChildNodes())
  box.removeChild(box.firstChild);
parent.insertBefore(box,next);
pending…
innerhtml = ""
refreshRange();
box.innerHTML = '';
pending…
jquery
refreshRange();
$(box).contents().remove();
pending…
hide
refreshRange();
var display = box.style.display;
box.style.display = 'none';
while(box.hasChildNodes())
  box.removeChild(box.firstChild);
box.style.display = display;
pending…

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