Ein nett gemachter RSS Reader in Javascript, nur schade, dass der Code unkommentiert ist (aber bei so wenig Lines of Code versteht man den auch so ;-))
Ajax.RssReader = Class.create();
Ajax.RssReader.prototype = Object.extend(new Ajax.Request(), {
initialize : function( url, options ) {
options = options || {};
this.setOptions(options);
this.items = {};
var onSuccess = this.options.onSuccess || Prototype.emptyFunction;
var onFailure = this.options.onFailure || Prototype.emptyFunction;
this.options.onSuccess = (function(t) { if( this.onSuccess(t) ) { onSuccess(this); } else { this.onFailure(t); onFailure(this); } }).bind(this);
this.options.onFailure = (function(t) { this.onFailure(t); onFailure(this); }).bind(this);
this.request( url );
},
onSuccess : function( t ) {
try {
var node = t.responseXML;
var xmlChannel = node.getElementsByTagName(’channel’).item(0);
}
catch(e) {
return false;
}
this.channel = {
title: this._getElementValue(xmlChannel, ‘title’),
link: this._getElementValue(xmlChannel, ‘link’),
description: this._getElementValue(xmlChannel, ‘description’),
language: this._getElementValue(xmlChannel, ‘language’),
copyright: this._getElementValue(xmlChannel, ‘copyright’),
managingEditor: this._getElementValue(xmlChannel, ‘managingEditor’),
webMaster: this._getElementValue(xmlChannel, ‘webMaster’),
pubDate: this._getElementValue(xmlChannel, ‘pubDate’),
lastBuildDate: this._getElementValue(xmlChannel, ‘lastBuildDate’)
};
this.items = new Array();
var xmlItems = xmlChannel.getElementsByTagName(’item’);
for (var n=0; n
var xmlItem = xmlItems[n];
var item = {
title: this._getElementValue(xmlItem, 'title'),
link: this._getElementValue(xmlItem, 'link'),
description: this._getElementValue(xmlItem, 'description'),
author: this._getElementValue(xmlItem, 'author'),
category: this._getElementValue(xmlItem, 'category'),
comments: this._getElementValue(xmlItem, 'comments'),
guid: this._getElementValue(xmlItem, 'guid'),
pubDate: this._getElementValue(xmlItem, 'pubDate')
};
this.items.push( item );
}
return true;
},
onFailure : function( t ) {
},
_getElementValue : function( node, elementName ) {
try {
var value = node.getElementsByTagName(elementName).item(0).firstChild.data;
}
catch(e) {
var value = '';
}
return value;
}
});
