Retrieve page title from any site with Javascript

Question

Hi I'm looking for an API that retrieve page title in Javascript, for an address given.

Thanks

Answer 1

Javascript cannot access external document's titles

Answer 2

You can retrieve the title of the current window by using document.title:

<button onclick="alert(document.title);">show title</button>

You can how ever use an iframe for different pages provided that they are on the same domain:

<script>
   function iframeLoaded(iframe){
        alert(iframe.contentWindow.document.title);
   }

   function getTitle(){
        var url = "<some url here>";
        var htm = '<iframe src="'  + url + '" onload="iframeLoaded(this)"></iframe>';
        document.getElementById('loader').innerHTML = htm;
   }
</script>
<button onclick="getTitle()">get title</button>
<div id="loader" style="display:none">

</div>