Mottie Keyboard: Change focus when input field equals maxlength

Question

I will make input automatically change focus to next input if input field equals maxlength. The input field is integrated with Mottie Keyboard. Is it possible to do this?

Here's DEMO : JSFIDDLE

If Virtual Keyboard is not used, it's easy to use this code:

$("input").bind("input", function() {
        var $this = $(this);
        setTimeout(function() {
            if ( $this.val().length >= parseInt($this.attr("maxlength"),10) )
                $this.next("input").focus();
        },0);
    });

When I combine script given above with Mottie Keyboard, it doesn't work.

Answer 1

I think you also opened the issue in the repository?

To summarize my response there, use the change callback with the switchInput API function to accomplish what you need (demo):

HTML (example)

<input type="text" /> <!-- max len = 3 -->
<input type="text" /> <!-- max len = 3 -->
<input class="last" type="text" /> <!-- max len = 4 -->

Script

$(function() {
  $("input").keyboard({
    position: {
      // position under center input
      of: $("input:eq(1)"),
      // move down 12px; not sure why it doesn't line up
      my: 'center top+12',
      at: 'center top'
    },
    enterNavigation: true,
    maxLength: 4,
    layout: 'num',
    autoAccept: true,
    usePreview: false,
    change: function(e, keyboard, el) {
      var len = keyboard.$el.hasClass("last") ? 4 : 3;
      if (keyboard.$el.val().length >= len) {
        // switchInput( goToNext, isAccepted );
        keyboard.switchInput(true, true);
      } else if (keyboard.$el.val() === "" && keyboard.last.key === "bksp") {
        // go to previous if user hits backspace on an empty input
        keyboard.switchInput(false, true);
      }
    }
  });
});