如果数组中存在其id，则选中该复选框

var data = [
  { id: 1, name: 'Item 1', selected: false },
  { id: 2, name: 'Item 2', selected: true },
  { id: 3, name: 'Item 3', selected: false },
  // ...
];

<ul id="item-list">
  <!-- JavaScript will populate the list here -->
</ul>

var itemList = document.getElementById('item-list');

data.forEach(function(item) {
  var listItem = document.createElement('li');
  var checkbox = document.createElement('input');
  checkbox.type = 'checkbox';
  checkbox.value = item.id;
  checkbox.checked = item.selected;

  listItem.appendChild(checkbox);
  listItem.appendChild(document.createTextNode(item.name));

  itemList.appendChild(listItem);
});

itemList.addEventListener('change', function(event) {
  if (event.target.type === 'checkbox') {
    var itemId = parseInt(event.target.value, 10);
    var item = data.find(function(item) {
      return item.id === itemId;
    });

    if (item) {
      item.selected = event.target.checked;
    }
  }
});