NodeList changes do not affect length

Question

i have created a NodeList with nodeList = document.createDocumentFragment().childNodes;,

then i have set nodeList[0] = document.getElementById("foo");

everything works fine, the only problem is, that nodeList.length stays 0

i have allready tried to change an Array to a NodeList. Also i have tried to use a fragment, appended children and changed them afterwards and returned the childnodes.

i cannot just append the original children, because they get removed somewere else then.

what am i missing?

yes i know i could just use an Array, but i want to NodeList element

"what am i missing?" – There's no way to accomplish that other than the ones you already mentioned you don't want. — bfavaretto, Jan 07 '14 at 20:55
... you could clone the element and appending to the fragment, instead of moving it there. would that be acceptable? — bfavaretto, Jan 07 '14 at 20:59
no because it would be a different one then, it should work like a simple array — Friedrich, Jan 07 '14 at 21:02
possible duplicate of [Should I use document.createDocumentFragment or document.createElement](http://stackoverflow.com/questions/3397161/should-i-use-document-createdocumentfragment-or-document-createelement) — Vova Bilyachat, Jan 08 '14 at 13:04

score 1 · Answer 1 · answered Jan 08 '14 at 13:10

I am not sure how duplicate works so i will add answer here

from documentation https://developer.mozilla.org/en-US/docs/Web/API/DocumentFragment?redirectlocale=en-US&redirectslug=DOM%2FDocumentFragment DocumentFragment has child property as read only so you cant write to it, instead use appendChild();

var nodeList = document.createDocumentFragment();
nodeList.appendChild(document.getElementById("foo"))

NodeList changes do not affect length

1 Answers1