Is there a way to transform a string from JSON into a DOM structure?
The Problem is:
I get the following structure (gen开发者_StackOverflow中文版erated in PHP) sent via JSON as a string.
<article>
<header>
<h2><a href="#">url</a></h2>
<p><time datetime="2009-11-05">05 Nov 2009</time></p>
</header>
<div class="entry">
<p>something</p>
...
</div>
<footer>something</footer>
</article>
I have a list of articles on the site and I need to replace an existing article with the received one. Using jQuery, I would do something like this:
var $victim = $slider.find('article.loading:first');
$fresh = $(basket.shift());
basket.shift()
is the received article in the above string form and $victim
is the existing one.
Now, normally I would do
$victim.replaceWith($fresh);
It works in good browsers (gecko, webkit) but jQuery has a known bug on using .innerHTML
with HTML5 elements, documented here. .replaceWith
uses that method internally in the end.
A solution would be to use native Javascript and methods except .innerHTML
. Something like this should work:
$victim.parent().get(0).insertBefore($fresh.get(0), $victim.get(0));
And it does, but only in good browsers, again. Something is not ok with the .get(0)
approach on the $fresh
var.
I've simulated an insertion of a node created locally in the js code and it works in IE:
var dummy = document.createElement('article');
var dummyChild = document.createElement('header');
txt = document.createTextNode("crap");
dummyChild.appendChild(txt);
dummy.appendChild(dummyChild);
$victim.parent().get(0).insertBefore(dummy, $victim.get(0));
So, is there any other way of transforming the string into a DOM subtree? Or any other way to get by the replaceWith problem?
Note: I'm no javascript guru/ninja :)
Ok, after some more reading I think I've found why the .insertBefore
doesn't work.
As the jQuery API states (http://api.jquery.com/jQuery/#creating-new-elements), when I pass the <article>
as a string, the DOM element is created also via .innerHTML
because of its complexity.
Is there a way to force $()
in using the native createElement instead? I know it sucks performance-wise, but at least it will get IE working.
You error might actually be occurring earlier than you think. When you wrap the basket.shift()
in $()
it is actually being added to a hidden div
at that point. Have you tried this:
var $victim = $slider.find('article.loading:first');
fresh = basket.shift();
$victim.replaceWith(fresh);
IE causes errors when working with HTML5 elements so try to donwload the script from this page and include it before any other in the head of the document: http://html5doctor.com/how-to-get-html5-working-in-ie-and-firefox-2/
This should prevent errors caused by HTML5 elements in IE
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