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 you use indexOf case insensitive?
You can’t make . indexOf() case insensitive. You can normalize the case between the Array and the search term. You seem to be doing a search and then converting the case, so that isn’t going to help you.
Read moreIs indexOf case sensitive?
indexOf() methods are all case-sensitive .
Read moreCan you use indexOf for an array?
IndexOf(Array, Object, Int32) Searches for the specified object in a range of elements of a one-dimensional array, and returns the index of its first occurrence . The range extends from a specified index to the end of the array.
Read moreIs indexOf case sensitive C#?
IndexOf Method is by default case sensitive . But we can make it case insensitive if we use one of the overloads: IndexOf(String, StringComparison).
Read moreWhat is indexOf in JavaScript?
indexOf() The indexOf() method, given one argument: a substring to search for, searches the entire calling string, and returns the index of the first occurrence of the specified substring .18 Şub 2022
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 .16 May 2019
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