使用JSON字符串设置Select2选定值

// HTML
<select id="mySelect2"></select>

// JavaScript
var data = [
  { id: 1, text: 'Option 1' },
  { id: 2, text: 'Option 2' },
  { id: 3, text: 'Option 3' }
];

var selectedValues = [1, 3]; // 选定值的ID数组

$('#mySelect2').select2({
  data: data,
  multiple: true, // 允许多选
  placeholder: 'Select an option',
  initSelection: function (element, callback) {
    // 根据选定值的ID数组，找到对应的选项并返回
    var selectedOptions = [];
    for (var i = 0; i < selectedValues.length; i++) {
      var option = $.grep(data, function (item) {
        return item.id == selectedValues[i];
      })[0];
      selectedOptions.push(option);
    }
    callback(selectedOptions);
  }
});