Question

As I read the documentation a backslash is used to escape a character. So I coded the regular expression as:

xxx  = new RegExp("\.$", "g");

This does not work and through trial and error I found that

new RegExp("\\.$", "g");

does work.

Is the documentation incorrect?

Answer 1

Use the m flag to make $ match end of lines, and escape the .:

var regex = /\.$/m;

or:

var regex = new RegExp("\\.$", "m");

In a string to get a literal backslash you need to escape it with another backslash.