Trigger callback functions when native HTML or jQuery elements get added to the DOM tree
You are probably thinking: “So what is ‘oned’ actually?”. Well, you don’t have to wonder anymore: oned is a homophonic pun of the onAdd() function that this library provides and what’s also quite convenient is the following definition:
oned
meaning ‘Owned’.. Has no w, which makes it 1337er
(source: Urban Dictionary :P)
I have been working with Backbone.js a lot lately and stumbled upon the following problem:
When using Backbone.js, you are dealing with models, controllers, collections and views. The latter is meant to organize your interface, backed by models, of which each can be updated independently when the model changes, without having to redraw the page. Unfortunately, it is a common practice that the Backbone.js view does not have control over adding its own jQuery element to the DOM tree and thus the problem is that you cannot access or bind other elements within the tree from the view.initialize() or view.render() functions.
In a particular case, I wanted to bind to the click event of a button which is located outside jQuery element of the view.
To be able to do that, I have created oned.js which makes it possible to define a callback function within a native HTML or jQuery element which gets triggered when it is added (onAdd) to the DOM tree. Actually, to be more accurate, the callback function gets called when the element is appended to a DOM tree containing a certain specified parent (at default document.documentElement which is the <html> element).
Unfortunately, you are obligated to use jQuery as Internet Explorer (6, 7 & 8) Object prototypes are read-only.
Just include oned.js:
<script src="path/to/oned.js" type="text/javascript"></script>
Note: include oned.min.js for the minified version
All you have to do is call the onAdd() of a native HTML or jQuery element. It accepts the following arguments:
callback(required) – The callback function which gets triggeredparent(default:document.documentElement) – The native DOM element required as parent before triggering the callback function
var element = document.createElement("div");
element.onAdd(function() {
alert("Appended the DIV element!");
});
// elsewhere
document.getElementById("primary_content").appendChild(element);
var element = $("div");
element.onAdd(function() {
alert("Appended the DIV element!");
});
// elsewhere
$("#primary_content").append(element);
render: function() {
$(this.el).html(JST["my/mustache/template"]());
// do something
var self = this;
$(this.el).onAdd(function() {
$(self.el).closest(".shared_parent")
.find(".some_button")
.click(self.someCallbackFunction);
});
return this;
}
For support, remarks and requests please mail me at paul.engel@holder.nl.
Copyright © 2011 Paul Engel, released under the MIT license
http://github.com/archan937 – http://twitter.com/archan937 – paul.engel@holder.nl
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