Answers for "jquery get array of all checked checkboxes"

jquery get all checked checkboxes

var values=[];
$('input[name="your-checkbox-name[]"]:checked').each(function () {
  values[values.length] = (this.checked ? $(this).val() : "");
});

jquery get selected checkbox value array

$("#merge_button").click(function(event){
    event.preventDefault();
    var searchIDs = $("#find-table input:checkbox:checked").map(function(){
      return $(this).val();
    }).get(); // <----
    console.log(searchIDs);
});