What will the '\$' regular expression match?

Question

I have found that,

$ :       Matches the end of the line
\s:       Matches whitespace 
\S:       Matches any non-whitespace character

But what exactly does \$ do ?

Answer 1

\$ will help to find the character "$" available in the content based on the expression flags assigned to the regular expression.

Say for example:

\$: only find the single "$" in a content \$/g: find the "$" globally available in content.

Please find the screenshot, which can give you clear idea.

\$: \$ with Global expression:

Answer 2

\$ just escapes the $ character so it will match $ literally