create dynamic frameset and frame with javascript

Question

I've a problem with a dynamic creation of frameset and frame, I'm write these simple script:

        function createframe(){ 
        var ahead = document.head;
        var mainfs = document.createElement('FRAMESET');
        mainfs.setAttribute("name", "mainframeset");
        mainfs.setAttribute("id", "mfs");
        mainfs.setAttribute("cols", "50,*");
        ahead.appendChild(mainfs);
        for ( var i = 0; i < 2; i++) {
          var ifrm = document.createElement("IFRAME"); 
          ifrm.setAttribute("src", "www.facebook.it"); 
          document.getElementById('mfs').appendChild(ifrm);
} 

And put in head of blank html page, but won't work!

any suggestion?

Answer 1

You're appending your frameset to the head of the html file, so nothing will appear. But your function is not working, because it's not closed yet, a "}" is missing at last. Also you need to add an event Listener, like so :

window.addEventListener("load", createframe, false);

Here's a jsfiddle link for you: Try It