In the last challenge, you learned to use the <code>caret</code> character to search for patterns at the beginning of strings. There is also a way to search for patterns at the end of strings.
You can search the end of strings using the <code>dollar sign</code> character <code>$</code> at the end of the regex.
testString: assert(lastRegex.source == "caboose$", 'You should search for <code>"caboose"</code> with the dollar sign <code>$</code> anchor in your regex.');
testString: assert(lastRegex.test("The last car on a train is the caboose"), 'You should match <code>"caboose"</code> at the end of the string <code>"The last car on a train is the caboose"</code>');