validatorNu-JSwebServiceAPI

Validate an HTML5 target document

Description :

       This script will send the contents of the local web
       page under test in POST format as multipart/form-data
       to https://validator.nu following the API requirements.
				 OR
       Send the URL of a hosted web page in the GET format

       For example in the browsers URL field enter one of these:
        https://validator.nu/?doc=http%3A%2F%2Fvividventures.biz
          Expect the results of the validation in web page format
        https://validator.nu/?doc=http%3A%2F%2Fvividventures.biz&out=json
          Expect the results of the validation in json format

Input :

        The a)contents or b)web-url of the page under test
        The script figures out which it will be depending on
        where the file is served.  a) if local and b) if hosted.

Output :

        As a console.log message something like
        status = 'Ok: No detectable HTML5 errors in data tested at validator.nu'
               = 'Error: Invalid HTML5 in data tested at validator.nu'
               = 'Undefined: No testing was performed.'

        As an innerHTML insertion into the document under test

Usage:

       Insert this script into the bottom of your web page, just above
       the body end tag. For example:

         <!--This is where the simple error message will be placed-->
         <p id="validation_log" style="background-color:DarkKhaki "></p>
         <!--Run the html validation test against the markup of current page-->
         <script src="test_valid_html.js"></script>
         </body></html><!--Ref only - obviously do not insert these end tags-->

Requires :

       The following external files, functions need to be available
       
          The webservice at https://validator.nu

         (For some reason jQuery does not seem to do
          multipart/form-data with the validator.nu API
          which means this code is in native XMLHttpRequest
          NO jQuery!)

Reference:

  https://github.com/validator/validator/wiki
  https://wiki.whatwg.org/wiki/Validator.nu_Web_Service_Interface
  http://en.wikipedia.org/wiki/Query_string
  http://en.wikipedia.org/wiki/URI_scheme
  https://developer.mozilla.org/en-US/docs/Web/API/FormData/append
  https://developer.mozilla.org/en-US/docs/Web/Guide/Using_FormData_Objects
  https://developer.mozilla.org/en-US/docs/AJAX/Getting_Started