Regex doesn't check for end of line

Question

Regex doesn't check for end of line

Consider the following scenario (Javascript code):

regex = new RegExp((/([\d,.]+)[ $]/));
value = "2.879"

Regexp does not match value but does match (value + ""), so I think $ is not the same? Why is this?

Shouldn't $ be checking for end of line?

+3

javascript string regex end-of-line

user3452075 Apr 22 15 at 23:33

source to share

1 answer

Jordan running · Accepted Answer · 2015-04-22T23:38:22+0000

Special characters such as $

do not have the same meaning within a character class. In a character class, they are just characters, so [ $]

will match a space character or a character $

. It won't match the end of the line.

If you want to match a space character or the end of a line, you must use alternation, i.e. ( |$)

...

Regex doesn't check for end of line

More articles: