select2js选择默认值-初始化默认值。
<script>
$('.js-example-basic-single').select2().val('{$content.cate_id}')
$('.js-example-basic-single').select2().trigger('change');
</script>
$('#mySelect2').val(['1', '2']);
$('#mySelect2').trigger('change'); // Notify any JS components that the value changed