ruby - Error calling Javascript in Camping App -

i want learn webapps. decided learn doing , chose start simple camping (i). small & (ii). know ruby.

i think comfortable html , css side of things , using mab. decided step , add javascript fails work. here offending code snippet view:

    div.image       link :rel => 'stylesheet', :href => 'styles.css'       script :type =>"text/javascript", :src => 'display_date.js'       # hash argument go @ end.       button 'display date', :type => "button", :onclick => "displaydate"      end 

the javascript file looks this:

function displaydate() {  document.getelementbyid("demo").innerhtml=date(); } 

when click 'display date' button on screen firefox webconsole reports

-- [18:32:46.762] referenceerror: displaydate not defined

it not work on ie either. camping file , javascript file in same directory. please advise. result better adding javascript inline results in stack error, can live without inline js handy know how code also.

i'm new camping , ruby too, may horrible. works though ;)

give controllers module route serve display_date.js client:

class myjs < r '/display_date\.js'       js = file.read('display_date.js')   def     @headers['content-type'] = 'application/javascript; charset=utf-8'     js   end end 

call displaydate function, parens: :onclick => displaydate().