RegExp.prototype.multiline
RegExp
实例的 multiline
访问器属性返回此正则表达式是否使用 m
标志。
¥The multiline
accessor property of RegExp
instances returns whether or not the m
flag is used with this regular expression.
Try it
描述
¥Description
如果使用了 m
标志,则 RegExp.prototype.multiline
的值为 true
;否则,false
。m
标志指示多行输入字符串应被视为多行。例如,如果使用 m
,则 ^
和 $
从仅匹配整个字符串的开头或结尾更改为匹配字符串内任何行的开头或结尾。
¥RegExp.prototype.multiline
has the value true
if the m
flag was used; otherwise, false
. The m
flag indicates that a multiline input string should be treated as multiple lines. For example, if m
is used, ^
and $
change from matching at only the start or end of the entire string to the start or end of any line within the string.
multiline
的集合访问器是 undefined
。你不能直接更改此属性。
¥The set accessor of multiline
is undefined
. You cannot change this property directly.
示例
使用多行
规范
Specification |
---|
ECMAScript Language Specification # sec-get-regexp.prototype.multiline |
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