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 moreHow use contains in jQuery?
jQuery :contains() Selector The :contains() selector selects elements containing the specified string . The string can be contained directly in the element as text, or in a child element. This is mostly used together with another selector to select the elements containing the text in a group (like in the example above).
Read moreWhat is case insensitive in JavaScript?
Comparing strings in a case insensitive manner means to compare them without taking care of the uppercase and lowercase letters . To perform this operation the most preferred method is to use either toUpperCase() or toLowerCase() function.
Read moreIs jQuery function case-sensitive?
Answer 51d3cd1b8c1cccce5c004d94 Yes, it is . More generally, JavaScript is case-sensitive: tolowercase() won’t work, it must be toLowerCase() .
Read moreHow do I make a search not case-sensitive in JavaScript?
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
Read moreHow do you make a 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.
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