How to catch creation of DOM elements and manipulate them with jQuery
I'm trying to devise a method of when adding a simple div element with a class and some data-* in it, it will replace it or add into it some other elements. This method should not be called manually, but automatically by some kind of .live() jQuery method, a custom event or some kind like $('body').bind('create.custom'), etc. I need it this way since I wouldn't know in advance what elements will be created since they will be served through ajax like single empty div's or p's .
<!DOCTYPE html>
<html>
<head>
<title >on create</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" ></script>
<script type="text/javascript" >
jQuery(function($){
$("div.fancyInput").each(function(index,element){
var $div = $(this);
var dataId = $div.attr("data-input-id");
var inputId = '';
var labelId = '';
if(!!dataId){
inputId = 'id="' + dataId + '"';
labelId = 'id="' + dataId + 'Label"';
} // if
var dataValue = $div.attr();
$(
'<p class="fancyInput" >' +
' <label ' + labelId + ' for="' + inputId + '" >A fancy input</label>' +
' <input ' + inputId + ' name="' + inputId + '" value="A fancy input" />' +
'</p>'
).appendTo($div);
}); // .each()
}); // jQuery()
</script>
<script type="text/javascript" >
jQuery(function($){
var counter = 2;
var $form = $('#form');
$('#add').click(function(event){
$('<div class="fancyInput" data-input-id="fancyInput' + counter + '" ></div>').appendTo($form);
counter++;
}); // .click
}); // jQuery()
</script>
</head>
<body>
<a id="add" href="#" > add another one </a>
<form id="form" action="#" >
<p class="normalInput" >
<label id="normalInputLabel" for="normalInput" >A normal input</label>
<input id="normalInput" name="normalInput" value="A normal input" />
</p>
<div class="fancyInput" ></div>
</form>
</body>
</html>
Update: I checked liveQuery beforehand, it's that kind of functionality that I need, but with th开发者_如何转开发e ability to modify DOM elements while the event callback is executed. So it's not just that I need events attached, but the ability to modify the DOM upon element creation. For example: whenever a new is created, it should be filled in (even better if replaced) with the p, label and input tags
You could use a DOM Level 3 Event, like DOMNodeInserted. This could look like:
$(document).bind('DOMNodeInserted', function(event) {
// A new node was inserted into the DOM
// event.target is a reference to the newly inserted node
});
As an alternative, you might checkout the .liveQueryhelp jQuery plugin.
update
In referrence to your comment, have a look at http://www.quirksmode.org/dom/events/index.html, only browser which do not support it are the Internet Explorers of this this world (I guess IE9 does at least).
I can't say much about the performance, but it should perform fairly well.
加载中,请稍侯......
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