select onchange get value jquery
$('#the_id_select').on('change', function() { alert( this.value ); }); //or $("#the_id_select").change(function(){ alert( this.value ); });
onchange input jquery
$(document).on("input", "#payedValue", function () { var mad = $("#madyoniya").val(); var payed = $(this).val(); $("#rest").val(parseFloat(mad) - parseFloat(payed)); });
jquery onchange get element
$('.some_class').change(function (e) { console.log(e.target); console.log($(':focus').); // just remove the .get(0)
Source: stackoverflow.com