The indexOf() method returns the index number where the target string is first found or -1 if the target is not found. Like equals(), the indexOf() method is case-sensitive , so uppercase and lowercase chars are considered to be different.
Read moreHow do I make indexOf not case-sensitive?
Both String#includes() and String#indexOf() are case sensitive. Neither function supports regular expressions. 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 .
Read moreDoes indexOf ignore case?
The indexOf() method returns the index number where the target string is first found or -1 if the target is not found. Like equals(), the indexOf() method is case-sensitive , so uppercase and lowercase chars are considered to be different.
Read moreCan I use includes JavaScript?
includes() method is intentionally generic. It does not require this value to be an Array object, so it can be applied to other kinds of objects (e.g. array-like objects).
Read moreWhat to use instead of includes in JavaScript?
indexOf() The Array#indexOf() function is a common alternative to includes() . The indexOf() function returns the first index in the array at which it found valueToFind , or -1 otherwise.
Read moreHow do you make an INC case insensitive?
To make strcmp case-insensitive, use strcasecmp from #include <strings. h> . strcasecmp can be used in exactly the same way as strcmp. To make strncmp case-insensitive, use strncasecmp from #include <strings.
Read moreHow do I use ignore case?
You ignore case when you treat the data, not when you retrieve/store it . If you want to store everything in lowercase use String#toLowerCase, in uppercase use String#toUpperCase. Then when you have to actually treat it, you may use out of the bow methods, like String#equalsIgnoreCase(java.
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