Anchors

Function	RegExp equivalent	Explanation
lineStart	^	Assert position at the start of string, or start of line if multiline flag is set
not.lineStart not(lineStart)	(?!^)	Assert position not at the start of string/line
lineEnd	$	Assert position at the end of string, or end of line if multiline flag is set
not.lineEnd not(lineEnd)	(?!$)	Assert position not at the end of string/line
wordBoundary	\b	Assert position at a word boundary, between word and non-word characters
not.wordBoundary not(wordBoundary)	\B	Assert position not at a word boundary