js实现把textarea通过换行或者回车把多行数字分割成数组

var textarea = modal.find("[name='uids']").val();
var uidArr = textarea.split(/[(\r\n)\r\n]+/);

测试结果

"111\r\n\r\n222\n\n333\r444\n\r\r\r\r777".split(/[(\r\n)\r\n]+/)
(5) ["111", "222", "333", "444", "777"]

"111\r\n\r\n222\n\n333\r444...777".split(/[(\r\n)\r\n]+/)
(4) ["111", "222", "333", "444...777"]