chrome extention sample

main.js

var api = 'http://api.twitter.com/1/statuses/home_timeline.json' ;
var OAUTH_CONSUMER_KEY    = 'XXX' ;
var OAUTH_CONSUMER_SECRET = 'XXX' ;
var OAUTH_ACCESS_TOKEN    = 'XXX' ;
var OAUTH_ACCESS_SECRET   = 'XXX' ;
main();

function main() {

  var accessor = {
    consumerSecret: OAUTH_CONSUMER_SECRET,
    tokenSecret: OAUTH_ACCESS_SECRET
  } ;

  var message = {
    method: "GET",
    action: api,
    parameters: {
      oauth_signature_method: "HMAC-SHA1",
      oauth_consumer_key: OAUTH_CONSUMER_KEY,
      oauth_token: OAUTH_ACCESS_TOKEN
    }
  } ;

  OAuth.setTimestampAndNonce( message ) ;
  OAuth.SignatureMethod.sign( message, accessor ) ;
  var target = OAuth.addToURL( message.action, message.parameters ) ;
  var options = {
    type: message.method,
    url: target,
    dataType: 'json',
    success: function(data) {
      onText(data);
    },
    error: function( a ) {
      window.alert( a.responseText ) ;
    },
    timeout: 1000 * 50
  };
  $.ajax( options ) ;
}

function onText( data ) {
  for( var i = 0; i < data.length; i++ ) {

    var path = data[i].user.profile_image_url;
    var userName = data[i].user.name;
    var screenName = data[i].user.screen_name;
    var tweet = data[i].text ;
    $(document.body).append($("<img>").attr("src", path));
    $(document.body).append($("<br />"));
    $(document.body).append($("<p>").text(tweet));
  }
}