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 you check if a string contains a substring case insensitive JavaScript?
The simplest way is to convert the entire string to either to lowercase or uppercase and use the javascript indexOf, includes methods as shown below. To check for case insensitive string contains, use the regular expressions. Add suffix “i” after the string regular expression as shown.
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