Answers for "jquery dropdown selection changed"

dropdown option selection change event in jquery

$("select [name='element_name']").change(function(){
	// condition goes here
});

jquery on element change

// On element change.
$('mydiv').bind('DOMSubtreeModified', function () {
  console.log('changed');
});

jquery detect textarea change

$('#myTextAreaID').on('input propertychange paste', function() {
    //my Textarea content has changed
});