jquery - enter key do something javascript -


i using bootstrap , jquery. when enter tracking field hit enter key nothing happens. because not using attribute. if write press check button loads modal , executes checkform() function. question: want same thing when press button. how can this?

html:

<input type="text" placeholder="tracking kod" name="tracking"  id="tracking"         class="form-control" autocomplete="off" required>  <button type="submit" class="btn btn-success" id="checkbutton"          onclick="checkform();" data-toggle="modal" data-target="#mymodal">     <span class="glyphicon glyphicon-check"></span> check </button>

javascript:

function checkform() {     var tracking = document.getelementbyid("tracking");     var modal = document.getelementbyid("modal");     if(tracking.value == '')     {         modal.innerhtml = '<div class="alert alert-danger" role="alert"><span class="glyphicon glyphicon-remove"></span> xahiş edirik tracking daxil edin!</div>';         return false;     }     else     {         modal.innerhtml = '<div class="alert alert-info" role="alert"><span class="fa fa-spinner fa-spin"></span> gözləyin</div>';     }     var url = 'track.php?tracking=' + tracking.value + '';     $.get(url, function(response) {          $( "#modal" ).hide(0.1);         $( "#modal" ).show( "slow" );         modal.innerhtml = response;     }); }

i tried code. added end of body tag:

<script> $.fn.enterkey = function (fnc) {     return this.each(function () {         $(this).keypress(function (ev) {             var keycode = (ev.keycode ? ev.keycode : ev.which);             if (keycode == '13') {fnc.call(this, ev);}         })     }) }  $("#tracking").enterkey(function () {checkform();}); </script> 

    <script type="text/javascript"> $.fn.enterkey = function (fnc) {return this.each(function () {$(this).keypress(function (ev) { var keycode = (ev.keycode ? ev.keycode : ev.which); if (keycode == '13') {document.getelementbyid("checkbutton").click();}})}) } $("#tracking").enterkey(function () {checkform();});      </script>

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