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Editorial Team
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Asked: 2026-05-28T06:33:58+00:00

I was trying to develop a Chrome extension that can display me the last

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I was trying to develop a Chrome extension that can display me the last 3 news from a soccer news site (obviously the page is not open in any tab), by refreshing every 5 minutes. My ideea was to load the page inside an iframe and, once the page is loaded, access the page DOM and extract only the text nodes with the news. I’ve tried in many ways using ready and load functions, I tried to follow this solutions here but i always get warnings. My question is: is there a way I can do that without having troubles with cross-domain security? Are there any simple examples i can use?

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1 Answer

  1. Editorial Team

    Here’s how you could do it using JQuery (please keep in mind I dont know JQuery, just saw this approach somewhere and thought it might work for you).
    I put this in a popup and it worked….

    <!DOCTYPE html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js"></script>
<script>

function renderNews(newsList){
      $('#news').html('');
      $(newsList).each(function(i,item){
         var link = document.createElement('a');
         $(link).attr('href',item.link);
         $(link).html(item.description);
         $(link).click(function(){
            chrome.tabs.create({url:$(this).attr('href')});
         });

         var linksDate = document.createElement('span');
         //$(linksDate).text(item.date);
         $(linksDate).text(item.day + '-' + item.month + ' ' + item.hour + ':' + item.minute+' - ');

         var listItem = document.createElement('li');
         $(listItem).append(linksDate).append(link);

         $("#news").append(listItem);
       });
}


  function getNews() {
   $.get("http://www.milannews.it/?action=search&section=32", null,  function(data, textStatus)
    {

        if(data) {
        var news=$(data).find(".list").find('li').slice(0,3) ;
        $("#status").text('');

      var newsList=[];
      $(news).each(function(i, item){
       var newsItem={};
       newsItem.description=$(item).find('a').html();
       newsItem.link='http://www.milannews.it/'+$(item).find('a').attr('href');
       newsItem.date=$(item).find('span').first().text();
       newsItem.day=newsItem.date.split(' ')[0].split('.')[0];
       newsItem.month=newsItem.date.split(' ')[0].split('.')[1];
       newsItem.hour=newsItem.date.split(' ')[1].split(':')[0];
       newsItem.minute=newsItem.date.split(' ')[1].split(':')[1];
       newsList[i]=newsItem;
      });
      renderNews(newsList);
      localStorage.setItem('oldNews',JSON.stringify(newsList));
        }
    });
  }

  function onPageLoad(){
   if (localStorage["oldNews"]!=null) renderNews(JSON.parse(localStorage["oldNews"]));
   getNews();
  }
</script>
</head>
<body onload="onPageLoad();" style="width: 700px">
<ul id="news"></ul>
<div id="status">Checking for new news...</div>
</body>
</html>

    And dont forget to put the urls your getting with the xhr stuff in the permissions part of your manifest….
    http://code.google.com/chrome/extensions/xhr.html

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