$(document).ready(function() {
  $('#summernote').summernote({
              callbacks: {
                onKeydown: function (e) {
                    debugger
                    var t = e.currentTarget.innerText;
                    if (t.trim().length >= 10) {
                        //delete key
                        if (e.keyCode != 8)
                            e.preventDefault();
                    }
                },
                onKeyup: function (e) {
                    debugger
                    var t = e.currentTarget.innerText;
                    var tlength = t.trim().length;
                    $('#maxContentPost').text(10 - t.trim().length);
                },
                onPaste: function (e) {
                    debugger
                    var t = e.currentTarget.innerText;
                    var bufferText = ((e.originalEvent || e).clipboardData || window.clipboardData).getData('Text');
                    var all = t + bufferText;
                    document.execCommand('insertText', false, all.trim().substring(0, 10));
                    //$('#maxContentPost').text(1000 - t.length);
                    $('#maxContentPost').text(t.length);
                }
            }
  });
});