Uncaught TypeError: undefined is not a function while using jQuery

Question

I've written this script to make a TCPIP request to my machine, this works fine.

When I get status = 0 in the switch (0 = card reader not ready) I wrote the code so that an interval after 10 seconds "presses" again the "#print_card" button so that it tries the request again.

Everything works fine but when I press the button again with $('#print_card').trigger("click"); I get the famous error:

Uncaught TypeError: undefined is not a function while using jQuery and the console gives this to the bootstrap.min.js:6 file (which is the original Bootstrap file).

I tried $('#print_card').click(); and nothing changes...

This is my code. If I remove line #439 $('#print_card').trigger("click"); I don't get the error...:

  var interval;
  var status_timer;
  function attendi_e_riprova(txt){
    var sec = 10;

    var interval = setInterval(function(){
      if(sec != 1){
        sec--;
        if(sec == 1){
          sec_word = 'secondo';
        }else{
          sec_word = 'secondi';
        }
        $('#card-modal-body').html('<p>'+txt+'</p>');
      }else{
        clearInterval(interval);

        //THIS IS THE TRIGGER <-----------------------------------
        $('#print_card').trigger("click");
        //THIS IS THE TRIGGER <-----------------------------------

        return false;
      }
    }, 1000);

    $('.close').click(function(){
      clearInterval(interval);
      clearInterval(status_timer);         
    }); 

  }

  var codemaster = '1';
  var chain = 1;
  var shop = 1;

  function scriviCard(){
    //Another function
  }


  $('#print_card').click(function(){
    $('#card-modal-body').html('<p><i class="fa fa-spinner fa-spin"></i> Ricerca del lettore e card, attendere&hellip;</p>');

    var req = '"CWD2";"';

    $.post(base_url()+'config/RichiestaTCPIP', {array:req}, function(status){
      if(status == 'err'){
        console.error('Errore: controller file config.php funzione di linea #117');
      }else{
        console.log('Status: '+status)

        switch(status){
          case '0':
            attendi_e_riprova('<i class="fa fa-ban text-danger"></i> Lettore NON disponibile. Assicurarsi che sia collegato.');
          break;
          case '1':
            attendi_e_riprova('Lettore vuoto. Inserire una card vergine per poterla scrivere.');
          break;
          case '4':
            attendi_e_riprova('<i class="fa fa-check text-success"></i> Card trovata. In attesa di riconoscimento...');
          break;
          case '5':
            attendi_e_riprova('<i class="fa fa-ban text-danger"></i> Card in scrittura. Attendere completamento.');
          break;
          default:
            //Nuova richiesta per la creazione card (per status 2 o 3)
            scriviCard();
            //console.log(status)
          break;
        }
      }         
    })

  })

Are you loading jQuery before the bootstrap file? Are you waiting the DOM is loaded before using jQuery in your code? — MarcoL
– MarcoL, Commented Jun 5, 2014 at 9:10
"I've written this script to make a TCPIP request to my machine..." Not nearly that low-level. :-) You're asking the browser to make an HTTP request for you. — T.J. Crowder
– T.J. Crowder, Commented Jun 5, 2014 at 9:11
You are missing a few ; on a few places, like after the clearInterval(t); }) for example — urbz
– urbz, Commented Jun 5, 2014 at 9:11
@MarcoCI jQuery loads first, second the bootstrap and third this code which is not in an external file but in the page itself. — Mr.Web
– Mr.Web, Commented Jun 5, 2014 at 9:12

Amin Jafari · Accepted Answer · 2014-06-12 08:08:58Z

4

+50

I think you should try defining your function in a variable before the trigger command! something like this:

window.clickFunction=function(
    $('#card-modal-body').html('<p><i class="fa fa-spinner fa-spin"></i> Ricerca del lettore e card, attendere&hellip;</p>');

var req = '"CWD2";"';

$.post(base_url()+'config/RichiestaTCPIP', {array:req}, function(status){
  if(status == 'err'){
    console.error('Errore: controller file config.php funzione di linea #117');
  }else{
    console.log('Status: '+status)

    switch(status){
      case '0':
        attendi_e_riprova('<i class="fa fa-ban text-danger"></i> Lettore NON disponibile. Assicurarsi che sia collegato.');
      break;
      case '1':
        attendi_e_riprova('Lettore vuoto. Inserire una card vergine per poterla scrivere.');
      break;
      case '4':
        attendi_e_riprova('<i class="fa fa-check text-success"></i> Card trovata. In attesa di riconoscimento...');
      break;
      case '5':
        attendi_e_riprova('<i class="fa fa-ban text-danger"></i> Card in scrittura. Attendere completamento.');
      break;
      default:
        //Nuova richiesta per la creazione card (per status 2 o 3)
        scriviCard();
        //console.log(status)
      break;
    }
  }});

and then when you want to call it use it like this:

$('#print_card').click(window.clickFunction);

or

window.clickFunction.trigger();

NOTE: you have to define the variable as a global variable and MUST be defined before the trigger or click line!

let me know how it goes.

answered Jun 12, 2014 at 8:08

Amin Jafari

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1 Comment

Mr.Web Over a year ago

OK, that worked! I did it this way: window.clickFunction=function{...} and instead of window.clickFunction.trigger(); I just placed a normal javascript clickFunction();

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