<!DOCTYPE html>
<html>

  <head>
    <link data-require="bootstrap-css@3.0.3" data-semver="3.0.3" rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css" />
    <link data-require="font-awesome@*" data-semver="4.0.3" rel="stylesheet" href="//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css" />
    <script data-require="jquery@*" data-semver="2.0.3" src="http://code.jquery.com/jquery-2.0.3.min.js"></script>
    <script data-require="bootstrap@*" data-semver="3.0.3" src="//netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="script.js"></script>
  </head>

  <body>
    <h1>Iframe a ser acessado</h1>
    <iframe src="frame.html" width="80%" height="600" id="frameDemo"></iframe>
 
  </body>

</html>
$(function() {

  $( "#frameDemo" ).load(function(){
        //$(this).show();
        console.log('iframe carregado');
        console.log($(this).contents().find("a").length);
        $(this).contents().find( "a" ).css( "background-color", "#BADA55" );
    });

});
/* Styles go here */

Hello World!
<br/>

<a href="teste">Meu Link 1</a>
<br/>

<a href="teste">Meu Link 2</a>