Question

I cannot figure out why this does not alert me at least once when I visit http://www.reuters.com. Am I missing something?

// ==UserScript==
// @name        test3
// @namespace   test3
// @version     1
// ==/UserScript==

$(document).ready(function () {

    var actualHost = window.location.toString();
    var intendedHost = "www.reuters.com";

    alert("Debug 1 - " + actualHost);

    if (actualHost == intendedHost) {
        alert("Debug 2 - " + actualHost);
    }

});

Thank you.

Answer 1

does not work is a really bad description of a problem..

anyway, i see one issue here. try this:

// ==UserScript==
// @name        test3
// @namespace   test3
// @version     1
// @include     *reuters.com*
// ==/UserScript==

loadDependancies(function () {

    var actualHost = unsafeWindow.location.toString();
    var intendedHost = "www.reuters.com";

    alert("Debug 1 - " + actualHost);


    if (actualHost == intendedHost) {
        alert("Debug 2 - " + actualHost);
    }


});

You need to use the @include directive that tells GM where the script should run.
You should use unsafeWindow to access the window object of that page

you also need to load jquery if it doesnt already exist on the page:

DEBUG = true

function addScript(url){
    var s = document.createElement('script');
    s.src = url;
    s.type = 'text/javascript';
    document.getElementsByTagName('head')[0].appendChild(s);
}

function log(msg){
  if(DEBUG){
    unsafeWindow.console && unsafeWindow.console.log(msg);
  }
}

function loadDependancies(boostrapFn) {

  addScript('jquery CDN url goes here..');

  var check = function(){
    log("waiting for dependancies to load: "+ typeof unsafeWindow.jQuery);
    if(typeof unsafeWindow.jQuery == 'undefined'){
      window.setTimeout(check, 500);
    }    else {
      jQuery = $ = unsafeWindow.jQuery;
      boostrapFn();
    }
  }
  check();
}

thats your new script. it will load jquery for you to use