trying to call javascript

I realize that js is really a client thing and not a server thing. Anyway, I am trying to call 

Code:

$(register_extension(
   var editorExtensionId = "mebiphcpglaighebopfapfoiimgnnbpf";

   // Make a simple request:
   chrome.runtime.sendMessage(editorExtensionId, "snapshot_mode",
       function(response) {
           if (!response.success)
                  handleError(url);

})

I try to load it with 

PHP Code:

$this->load->js("/js/javascript_funcs_extensionloaded.js");
javascript_funcs_extensionloaded(); 


I am getting:

A PHP Error was encountered

Severity: Error

Message: Call to undefined function javascript_funcs_extensionloaded()

Filename: controllers/Configure.php
Line Number: 43

Can anyone tell me how to look at this? 

proof that an old dog can learn new tricks