$(document).on('click', '[data-role="tabledel"]', function() {
	var stockuniqueid = $(this).attr('data-stockuniqueid');
	//删除对应数据
	for (var i = 0; i < checkbox.length; i++) {
		if (checkbox[i]['stock'].stock_unique_id === stockuniqueid) {
			checkbox.splice(i, 1);
			i = i - 1;
		}
	}
});

重点就是这个 ↓ ↓ ↓

for (var i = 0; i < checkbox.length; i++) {
		if (checkbox[i]['stock'].stock_unique_id === stockuniqueid) {
			checkbox.splice(i, 1);
			i = i - 1;
		}
	}