javascript take yes or no alert code example

Example 1: javascript confirm yes no

var proceed = confirm("Are you sure you want to proceed?");
if (proceed) {
  //proceed
} else {
  //don't proceed
}

Example 2: jquery alert with yes no

if (confirm('Are you sure ?')) {
        console.log('ok');
    }else
    {
      console.log('cancel')
    }