Wordpress surveyjs plugin - Cannot change textftield value

[Chatzimina]

Hello everyone,

I have a weird problem. I have used surveyjs plugin with a wordpress site (version : 5.1.1) and I have created a quesionnaire but I would like to keep which user is completing the questionnaire. I created a textfield and tried to complete automatically (because the user may not complete it properly) it by using this code:

  var textfield = document.getElementsByClassName('sv_q_text_root')[0];
  textfield[i].value = '<?php $current_user = wp_get_current_user(); echo $current_user->user_email ;?>';

Although I see the email shown inside the textfield when I save the survey it is not saved in the results. Then if I add by pressing in the keybord an extra letter after the email the result is saved. For example if I add by javascript the "[email protected]" in the textfiled it is not saved but if i write a letter by keyboard after it like this "[email protected]" it is saved.

Then I tried to simulate a keyboard press like this :

   jQuery(function($) {
      $( "#sv_q_text_root" ).trigger(
      jQuery.Event( 'keyup', { keyCode: "65", which: "65" } )
   )});

but still it doesn't save. If also you know another way to save the users with the results, I couldn't find something about wordpress. Thank you