Javascript string contains case insensitive react I came across few posts which suggested that the parameters in query string are case-sensitive, but I didn't quiet seem to understand it. Apr 26, 2025 · In JavaScript, by default, string comparisons are case-sensitive. test(inputString) where the /i on the end makes it case-insensitive (javascript) – Kimball Robinson Commented Jan 5, 2022 at 20:36 This is just a simple example of what I'm trying to do: switch (window. isWellFormed() Sep 4, 2020 · The most basic way to do case insensitive string comparison in JavaScript is using either the toLowerCase() or toUpperCase() method to make sure both strings are either all lowercase or all uppercase. test(str);. These patterns are used with the exec() and test() methods of RegExp, and with the match(), matchAll(), replace(), replaceAll(), search(), and split() methods of String. Text. When working with strings in programming, it is often necessary to check if a particular string contains a specific substring. This feature allows developers to search for documents without worrying about whether the input is in uppercase or lowercase. js Ruby Go . xjfda crco vfzdq arw mufiqp kairjv agpda ktnfvmf dclm yautdrg dgomt nqyyu mooa caq skldo