Save and restore check status of multiple checkboxes in a Chrome extension

I can save and restore a user input in a text field, based on the ID of the field - the code works as i expect, like:

function save_options() {
  var api = document.getElementById('text_field').value;
    chrome.storage.sync.set({
    savedApi: api,
    });
}    
document.getElementById("save").addEventListener("click", save_options);

function restore_options() {  
    chrome.storage.sync.get({"savedApi": ''}, function(items) {
      document.getElementById('text_field').value = items.savedApi;
    });
    }
document.addEventListener('DOMContentLoaded', restore_options);

Now i want to save the check status of multiple checkboxes. Should i really repeat this construction for every checkbox? Could somebody point me to a smarter way to save status of multiple checkboxes?