How to check with javascript if connection is local host?

Question

I want to have a check in my javascript if the page loading up is on my local machine.

The reason why I want to do that is that when I developing I like to make sure

Answer 1

The above answers mostly solve the problem but...

• What if localhost isn't necessarily 'localhost/'?
• What if you want to do FE validation during development?
• What if you want different behaviors during dev
  (fe validation, be validation, no validation)

One solution is to set the location hash and check it.

http://myname.foo.com/form.html#devValidation

You could add unlimited options with a switch

switch(location.hash) {}
    case '#devValidation':
        // log the results and post the form
        break;
    case '#beValidation':
        // skip front end validation entirely
        break;
    case '#noValidation':
        // skip all validation $('[name=validationType']).val('novalidation');
        break;
    case '#feValidation':
    default:
        // do fe validation
        break;
}