JavaScript
Article
By Sam Deering

jQuery Get RSS Feed Live Reader

By Sam Deering
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Use jQuery get rss (with JavaScript) to get a blogs (or websites) display rss feed on your web page. Use Google Ajax Feed API to retrieve the feed items and returns them as a list of feed items to be displayed. The feed can then be customized with your styles to suit your look – for example it could be used as a jQuery news aggregator.

jQuery RSS Viewer Demo Real World Demo

jQuery RSS Plugin Features

  • Automatically load rss feed when your web page loads
  • Refresh button to refresh the jQuery rss feed reader live
  • You can add mutiple rss feeds
  • You can specify a limit of feed items that are returned
  • Displays a loading button while reading rss feeds

jquery-blog-rss-feed

Download Source Files

The jQuery RSS Plugin Code

The jQuery RSS Plugin mainly uses JavaScript to call google.load(feed) to get the rss feed items.
var gfeedfetcher_loading_image="/images/page-images/loader.gif" //Full URL to "loading" image. No need to config after this line!!

google.load("feeds", "1") //Load Google Ajax Feed API (version 1)

function gfeedfetcher(divid, divClass, linktarget){
	this.linktarget=linktarget || "" //link target of RSS entries
	this.feedlabels=[] //array holding lables for each RSS feed
	this.feedurls=[]
	this.feeds=[] //array holding combined RSS feeds' entries from Feed API (result.feed.entries)
	this.feedsfetched=0 //number of feeds fetched
	this.feedlimit=5
	this.showoptions="" //Optional components of RSS entry to show (none by default)
	this.sortstring="date" //sort by "date" by default
	document.write('
') //output div to contain RSS entries this.feedcontainer=document.getElementById(divid) this.itemcontainer="
  • " //default element wrapping around each RSS entry item } gfeedfetcher.prototype.addFeed=function(label, url){ this.feedlabels[this.feedlabels.length]=label this.feedurls[this.feedurls.length]=url } gfeedfetcher.prototype.filterfeed=function(feedlimit, sortstr){ this.feedlimit=feedlimit if (typeof sortstr!="undefined") this.sortstring=sortstr } gfeedfetcher.prototype.displayoptions=function(parts){ this.showoptions=parts //set RSS entry options to show ("date, datetime, time, snippet, label, description") } gfeedfetcher.prototype.setentrycontainer=function(containerstr){ //set element that should wrap around each RSS entry item this.itemcontainer="" } gfeedfetcher.prototype.init=function(){ this.feedsfetched=0 //reset number of feeds fetched to 0 (in case init() is called more than once) this.feeds=[] //reset feeds[] array to empty (in case init() is called more than once) this.feedcontainer.innerHTML='

    Loading blog feeds...

    ' var displayer=this for (var i=0; i0 && this.feedlimit>this.feedurls.length && i==this.feedurls.length-1) //If this is the last RSS feed, and feedlimit/feedurls.length yields a remainder items_to_show+=(this.feedlimit%this.feedurls.length) //Add that remainder to the number of entries to show for last RSS feed feedpointer.setNumEntries(items_to_show) //set number of items to display feedpointer.load(function(label){ return function(r){ displayer._fetch_data_as_array(r, label) } }(this.feedlabels[i])) //call Feed.load() to retrieve and output RSS feed. } } gfeedfetcher._formatdate=function(datestr, showoptions){ var itemdate=new Date(datestr) var parseddate=(showoptions.indexOf("datetime")!=-1)? itemdate.toLocaleString() : (showoptions.indexOf("date")!=-1)? itemdate.toLocaleDateString() : (showoptions.indexOf("time")!=-1)? itemdate.toLocaleTimeString() : "" return ""+parseddate+"" } gfeedfetcher._sortarray=function(arr, sortstr){ var sortstr=(sortstr=="label")? "ddlabel" : sortstr //change "label" string (if entered) to "ddlabel" instead, for internal use if (sortstr=="title" || sortstr=="ddlabel"){ //sort array by "title" or "ddlabel" property of RSS feed entries[] arr.sort(function(a,b){ var fielda=a[sortstr].toLowerCase() var fieldb=b[sortstr].toLowerCase() return (fieldafieldb)? 1 : 0 }) } else{ //else, sort by "publishedDate" property (using error handling, as "publishedDate" may not be a valid date str if an error has occured while getting feed try{ arr.sort(function(a,b){return new Date(b.publishedDate)-new Date(a.publishedDate)}) } catch(err){} } } gfeedfetcher.prototype._fetch_data_as_array=function(result, ddlabel){ var thisfeed=(!result.error)? result.feed.entries : "" //get all feed entries as a JSON array or "" if failed if (thisfeed==""){ //if error has occured fetching feed alert("Some blog posts could not be loaded: "+result.error.message) } for (var i=0; i")? "
      n" : "" gfeedfetcher._sortarray(feeds, this.sortstring) for (var i=0; i" + feeds[i].title + "" var itemlabel=/label/i.test(this.showoptions)? '['+this.feeds[i].ddlabel+']' : " " var itemdate=gfeedfetcher._formatdate(feeds[i].publishedDate, this.showoptions) var itemdescription=/description/i.test(this.showoptions)? "
      "+feeds[i].content : /snippet/i.test(this.showoptions)? "
      "+feeds[i].contentSnippet : "" rssoutput+=this.itemcontainer + itemtitle + " " + itemlabel + " " + itemdate + "n" + itemdescription + this.itemcontainer.replace("")? "
    " : "" this.feedcontainer.innerHTML=rssoutput }
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    HTML Code

    Refresh live blog posts

    CSS Code

    /** RSS FEED **/
    .labelfield{ color:brown; font-size: 90%; }
    .datefield{ color:gray; font-size: 90%;}
    #rssfeeds a{ color: purple;text-decoration: none;font-weight: bold;}
    #rssfeeds p{ margin-bottom: 2px;}
    code{ color: red;}
    #blogoolafeed, #blogoolafeed a { color:white; }
    #blogoolafeed a:hover{ color:#8E7BD3; }
    #blogoolafeed ul { margin-left:-15px }
    #rssfeed-wrap { text-align:left; margin-left:15px; }

    Plugin source: http://www.dynamicdrive.com

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