Friday, February 2, 2007

Ajax - Javascript feed Reader

Save the code as HTML file and enjoy :).

 <html><head>  
 <script type= "text/javascript">  
 var strArr = ['http://www.thinkdigit.com/forum/external.php?type=RSS','http://www.snapfiles.com/feeds/sf20fw.xml',
'http://www.download.com/3410-2001-0-10.xml','http://www.download.com/3412-2001-0-10.xml',
'http://www.download.com/3412-2003-0-25.xml','http://www.videohelp.com/rss/tools',
'http://www.videohelp.com/rss/forum','http://www.pcstats.com/rss/rss.xml'  
 ];  
 var newArr = [];  
 var isXml = true;  
 var isSet = 0;  
 var XMLHttpRequestObject=false;  
 function togleTab(obj){  
     var currStyleClass = obj.className;  
     var applyStyleClass = "tabActive"  
     for(i=0; i < obj.parentNode.cells.length; i++){  
         obj.parentNode.cells[i].className = 'tabInactive';  
     }  
     obj.parentNode.cells[obj.cellIndex].className=applyStyleClass;      
 }  
 function loadXml(){  
     var index = Math.floor(Math.random()*strArr.length);  
     getData(strArr[index]);  
 }  
 //loadXml();  
 function processXmlData() {  
   var divObj = document.getElementById('targetDiv');  
   if(XMLHttpRequestObject.readyState!=4 ) {  
     divObj.innerHTML = "Loading ...";  
   } else if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) {  
     var response = XMLHttpRequestObject.responseXML;  
         var _link = response.getElementsByTagName('link')[0].firstChild.nodeValue;  
 //        var _title = "<a href='"+_link+"'>"+XMLHttpRequestObject.responseXML.getElementsByTagName('title')[0].firstChild.nodeValue+"</a>";  
         var _title = response.getElementsByTagName('title')[0].firstChild.nodeValue;  
         var _desc = response.getElementsByTagName('description')[0].firstChild.nodeValue;  
         var items = response.getElementsByTagName('item');  
         var info = "<Table width='100%' style='font-size:12px;font-weight:normal;'><tr style='background:#dddddd;'><td width='30%'><b>"+_title+"</b></td><td width='70%'>"+_desc+"</td></tr>";          
         var colorCounter = 0;  
         for(var i=0;i<items.length;i++){  
             colorCounter++;  
             var link = items[i].getElementsByTagName("link")[0].firstChild.nodeValue;  
             var tr = "<tr style='background:#fafafa;'>";  
             if(colorCounter%2==0){  
                     tr = "<tr style='background:#E9D2BC;'>";  
             }  
             var title = tr+"<td width='40%'><Font color='#000000' style='size:100px;'><a href='"+ link+"'>" + items[i].getElementsByTagName("title")[0].firstChild.nodeValue+"</a></Font></td>";  
             var desc = "<td width = '60%'>"+items[i].getElementsByTagName("description")[0].firstChild.nodeValue +"</td></tr>";  
                 info += title+desc ;  
       }  
     var dataToShow = info+"</Table>";      
     //newArr[isSet]= dataToShow;  
       alert(dataToShow);  
     divObj.innerHTML = dataToShow;  
     isSet++;  
     } else if(XMLHttpRequestObject.status==204 ||XMLHttpRequestObject.status==404 ||XMLHttpRequestObject.status==400 ||XMLHttpRequestObject.status==415 ||   XMLHttpRequestObject.status==505 ){  
     obj.innerHTML = "error";  
   }   
 }  
 function getData(dataSource) {    
     if (!XMLHttpRequestObject && typeof XMLHttpRequest !='undefined') {  
         netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead");  
         XMLHttpRequestObject = new XMLHttpRequest();  
         XMLHttpRequestObject.overrideMimeType('text/xml');  
     } else if (window.ActiveXObject) {  
         XMLHttpRequestObject = new ActiveXObject("MSXML2.XMLHTTP");  
     }  
   XMLHttpRequestObject.open("GET", dataSource,true);   
   var func = processXmlData;  
   XMLHttpRequestObject.onreadystatechange = func;              
   XMLHttpRequestObject.send(null);       
 }  
 function cleartDiv(divId){  
   var obj = document.getElementById(divId);  
   if(obj){  
     //obj.style.display = 'none';  
     obj.innerText="";  
   }  
 }  
 </script>  
 </head>  
 <body>  
   <select onchange="if(this.options[this.selectedIndex].value!=0)  
   {getData(this.options[this.selectedIndex].value);}  
   else{cleartDiv('targetDiv');}" size="1" style="width:25%;">  
   <option value='0' selected="selected">Please Select</option>  
   <option value='http://www.thinkdigit.com/forum/external.php?type=RSS'>ThinkDigit.com</option>  
   <option value='http://www.snapfiles.com/feeds/sf20fw.xml'>SnapFiles.com</option>  
   <option value='http://www.articlecity.com/xml/main.xml'>ArticleCity.com</option>  
   <option value='http://www.download.com/3410-2001-0-10.xml'>Download.com populars</option>  
   <option value='http://www.download.com/3412-2001-0-10.xml'>Download.com New</option>  
   <option value='http://www.download.com/3412-2003-0-25.xml'>Download.com 25 New Titles</option>  
   <option value='http://techdudes.blogspot.com/feeds/posts/default'>TechDudes</option>  
   <option value='http://funngyan.com/feed/'>fungyan</option>    
   </select>  
   <div id="linkDiv" style="width:98%;height:25px;overflow:auto;"></div>  
   <div id="targetDiv" style="border:dashed 1px;background:#fafafa;width:70%;height:450px;overflow:auto;font-family:verdana;font-size:10px;"></div>  
 </body>  
 </html>  

1 Comment:

jigar said...

Its good. But you should take care of all browsers like Safari and Mozilla.