how to use get value of selected option in jquery code example

Example 1: jquery get selected option value

var selectedOptionText = $('#mySelectID').find(":selected").text();//selected option text
var selectedOptionVal = $('#mySelectID').find(":selected").val();//selected option value

Example 2: get selected option value jquery

$("#vacc_wellness_agegroups option:selected").val();

Example 3: jquery get selected option value

jquery get selected option value