Javascript - string.replace()文本跨越多行？

Question

假设我有文字(不是HTML),我是从文本区域拉出来的.看起来像:

ALTER LOGIN [user1] DISABLE 

GO 

~~~~~~~~~~~~~ important stuff to keep ~~~~~~~~~~~~~~~ 

~~~~~~~~~~~~~ important stuff to keep ~~~~~~~~~~~~~~~ 

~~~~~~~~~~~~~ important stuff to keep ~~~~~~~~~~~~~~~ 


ALTER LOGIN [user2] DISABLE 

GO

~~~~~~~~~~~~~ important stuff to keep ~~~~~~~~~~~~~~~ 

~~~~~~~~~~~~~ important stuff to keep ~~~~~~~~~~~~~~~ 

~~~~~~~~~~~~~ important stuff to keep ~~~~~~~~~~~~~~~

我正在尝试从每个用户的ALTER删除到GO.使用replace(),我可以从ALTER替换为DISABLE,但我无法弄清楚如何匹配GO(在下一行),以便它删除整个块.思考？

Answer 1

.正则表达式匹配除了之外的 每个字符\n.在一些正则表达式中,您可以添加s标志以使其与它们匹配,但不能在Javascript中.

相反,您可以使用[\s\S]匹配所有空格和所有非空白的字符类,这就是一切.在?后*意味着它不会贪心,否则会第一之间匹配ALTER和最后GO.

str = str.replace(/ALTER[\s\S]*?GO/g, '');

jsFiddle.