Is JavaScript search case-sensitive?

If you want only part of the regex to be case insensitive (as my original answer presumed), then you have two options:

Case Insensitive Search Both String#includes() and String#indexOf() are case sensitive . … To do case insensitive search, you can use regular expressions and the String#match() function, or you can convert both the string and substring to lower case using the String#toLowerCase() function.16 May 2019

Case Insensitive Search Both String#includes() and String#indexOf() are case sensitive . … To do case insensitive search, you can use regular expressions and the String#match() function, or you can convert both the string and substring to lower case using the String#toLowerCase() function.16 May 2019