javascript - .children(":first-child") - ajax - multiple first children? -

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i have simple yet strange problem - when select .children(":first-child") multiple results given, 1 alert after another. 

//  ...          $.post(ajaxurl, data, function (response) {                 //alert(response);                  tinymce.get('geqqo-editor-new').setcontent('');                  $('#geqqo-modal-new').modal('hide');                  $('#geqqo-modal-new').on('hidden.bs.modal', function (e) {                     $('#timeline').prepend(response);                     var new_status = $('#timeline').children(":first-child").attr("id");                      alert(new_status);                 }); //    ...

how select first-child (that is, appended one) instead of multiple ones such doing.

try using one method instead of on method , :first instead of :first-child

$('#geqqo-modal-new').one('hidden.bs.modal', function (e) {                     $('#timeline').prepend(response);                     var new_status = $('#timeline').children(":first").attr("id");                      alert(new_status);                 });

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