Question

Is there way to prepend ‘http://’ to URL if it’s not there while adding URL with Insert Link in TinyMCE?

Answer 1

For that you would need to copy the tinymce Insert Link plugin, rename it, add the necessary code to it (the “http”-Adding) and use it as your own plugin.

EDIT: Ok, here is an example (using jQuery):

// You might need to change the event and/or tha handling 
// but this should give you a guess at what needs to be done
setup : function(ed)
{
       ed.onClick.add(function(ed, evt)
       {
           $(ed.getBody()).find('a').each(function(index, element){
               if (!$(this).attr('href').search('http')){
                    $(this).attr('href', 'http://' + $(this).attr('href'));
               }
           });
       });
},