Passing Input From Window.open To Parent Page

I have created a frameset, in which one of its frames open a pop-up using window.open . In that window opened i have a form to collect input from users. Input which i'm trying to r

Solution 1:

Here is a proposal (I changed small things, please be careful):

Body of parent.html:

<buttontype="button"onclick="popup('popup.html', '', 400, 200);">Opinion</button>
=&gt;<spanid="choiceDisplay">No choice.</span>

JavaScript of parent.html:

functionpopup(url, title, width, height) {
  var left = (screen.width/2) - (width/2);
  var top = (screen.height/2) - (height/2);
  var options = '';

  options += 'toolbar=no,location=no,directories=no,status=no';
  options += ',menubar=no,scrollbars=no,resizable=no,copyhistory=no';

  options += ',width='  + width;
  options += ',height=' + height;
  options += ',top='    + top;
  options += ',left='   + left;

  returnwindow.open(url, title, options);
}

functionsetLang(choice) {
  var languages = {
      'en': 'English',
      'fr': 'French',
      'ch': 'Chinese',
      'por': 'Portugese'
  };

  var choiceMessage = 'You have chosen "' + languages[choice] + '".';

  document.getElementById('choiceDisplay').innerHTML = choiceMessage;
}

Body of popup.html:

<formname="f"onsubmit="sendChoiceAndClose()"><fieldset><legend>Chinese/Portuguese</legend><p><inputtype="radio"name="lang"value="ch"checked>Chinese</p><p><inputtype="radio"name="lang"value="por">Portuguese</p><p><inputtype="submit" /></p></fieldset></form>

JavaScript of popup.html:

functionsendChoiceAndClose() {
  var form = document.forms['f'];
  var choice = form.lang.value;
  opener.setLang(choice);

  this.close();
}

Here is a overview of the result:

So to give a short explanation, a JavaScript function defined in the opener window is called from the pop-up window to send back the choice information.

Be careful though, if the JavaScript called contains blocking code (for instance alert(...)), the pop-up will be closed only after the blocking code has finished (i.e. after the alert window has been closed for instance).