javascript not working on form -

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can tell me why script in header tag doesn't work. can form show up, enter of information, click submit don't output show up. i've looked @ code on , on don't see problem is. appreciate help. teacher @ school doesn't much. 

<!doctype html> <html> <head> <title>     event scheduler </title>  </head> <body> <header> <script>     function scheduledevent(evtdate, evttitle, maxattendees, coordinator,        phonenum, email, infourl, printevent)     {         this.evtdate = evtdate;         this.evttitle = evttitle;         this.maxattendees = maxattendees;         this.coordinator = coordinator;         this.phonenum = phonenum;         this.email = email;         this.infourl = infourl;         this.printevent = printevent;          function printevent()         {             document.write("<p>you have scheduled event named " +   this.evttitle);             document.write(" occur on " + this.evtdate + " , allow " + this.maxattendees + " attendees.");             document.write("the event coordinated " + this.coordinator + " can reached @ " + this.phonenum);             document.write(" or email @ " + this.email + ". ");             document.write("more information event available @  <a href= '" + this.infourl + "'> " + this.infourl + "</a></p>");             }         function validate()          {             (document.evtform)              {              evt = new scheduledevent(evtdate.value, evttitle.value, maxattendees.value, evtcoordinator.value, phonenum.value, email.value, infourl.value);             }              (evt)             {                 evt.printevent();             }              return true;         } </script>  </header> <form name= "evtform" method= "post"> <table>  <tr> <td> event date: </td><td><input type= date id= "evtdate" /></td></td>  <tr><td>title:</td><td><input id= "evttitle" /></td></tr>  <tr><td> maximum attendees: </td><td><input id= "evtcoordinator" /><td></tr>  <tr><td> phone number (numbers only): </td><td><input type= tel id= "phonenum" />     </td></tr>  <tr><td> email: </td><td><input type= email id= "email" /></td></tr>    <tr><td>  more info: </td><td><input type= url id= "infourl" /></td></tr> </table> <input type= submit value= "submit" /> </form> </body> </html>

well input fields missing quotations arround name attributes.

you have: 

<input type= date id= "evtdate" />

when should have:

<input type="date" id="evtdate" />

you not doing on click of submit button.

you need start function somehow in click method or something. seem expect magically start working.


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