get this value on click jquery code example

Example 1: how to get value of button that click on it jquery

$("button").click(function() {
    var button = $(this).val();
    alert(button);
});

Example 2: jquery on click get element

$(document).on("click",".appDetails", function () {
   var clickedBtnID = $(this).attr('id'); // or var clickedBtnID = this.id
   alert('you clicked on button #' + clickedBtnID);
});