how to prevent to change selectbox value if i say no to confirm

Question

i m using a select box of country, when user select a country then add branch link appears and user add branches under that country, but when user want to change country then al

Answer 1

You can just store the previous value and set it back if needed, like this:

var countryVal;
$("#country").change(function() {
  var newVal = $(this).val();
  if (!confirm("Are you sure you wish to destroy these country branches?")) {
    $(this).val(countryVal); //set back
    return;                  //abort!
  }
  //destroy branches
  countryVal = newVal;       //store new value for next time
});

Or use .data() as @Gaby suggests, like this:

$("#country").change(function() {
  var newVal = $(this).val();
  if (!confirm("Are you sure you wish to destroy these country branches?")) {
    $(this).val($.data(this, 'val')); //set back
    return;                           //abort!
  }
  //destroy branches
  $.data(this, 'val', newVal);        //store new value for next time
});