JavaScript doesn’t have dictionaries, it has objects. Aside from that, strings (which is really what you are talking about) are always case-sensitive .
Read moreWhat is filter () in JavaScript?
The filter() method creates a new array filled with elements that pass a test provided by a function . The filter() method does not execute the function for empty elements. The filter() method does not change the original array.
Read moreIs JavaScript case sensitive?
JavaScript is Case Sensitive All JavaScript identifiers are case sensitive.
Read moreHow do you ignoreCase JavaScript?
The ignoreCase property specifies whether or not the “i” modifier is set . This property returns true if the “i” modifier is set, otherwise it returns false.
Read moreHow do I make something not case sensitive?
includes on and the substring to lowercase to make a case insensitive lookup.
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