javascript - How to correctly change value of input form to be noticed by "change" event? -

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i'm trying create keyboard input symbols in dynamically created fields. i'm using on() function handle blur , change events of input form. i'd input special chars on caret position. possible make without using global variables? change noticed if add letters keyboard , loose focus or press enter, or if type (letter , special character) || (special character , special character) without loosing blur or pressing enter. 

  // checking click targets   var clicky;   $(document).mousedown(function(e) {     clicky = $(e.target);   });    // handling dbclick , enter press   $(document).on("dblclick", "input#word", function (){     $(this).parent().parent().css('background-color', setoneditcolor);     $(this).prop("readonly", false);     $(this).keypress(function(e) {       if(e.which == 13) {         $(this).focusout();       }     });   });    // handling blur on input form   $(document).on("blur", "input#word", function (e){     lastfocus = $(this);      // checking if keyboardletter element clicked,     // if yes want keep focus on current input     if(clicky.attr('class') == 'keyboardletter'){       return false;     }     $(this).prop("readonly", true);     $(this).parent().parent().css('background-color', setdefaultcolor);     // $(this).trigger("change");   });    // onchange triggered on blur   $(document).on("change", "input#word", function (){     savechanges($(this).closest('tr').attr('id'), $(this).val(), 1);   });     //clicking on special characters     $(document).on("click", ".keyboardletter", function (){       pos = $(lastfocus).caret(); //getting caret position of focused input       lastfocus.val(lastfocus.val().insertat(pos, $(this).text().trim()));       $(lastfocus).caret(pos+1);     });

call .change() after setting value:

lastfocus.val(lastfocus.val().insertat(pos, $(this).text().trim())); $(lastfocus).change(); //this line

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