How to Perform a Case-Insensitive String Comparison in JavaScript?

Performing Case Insensitive String Comparison in JavaScript

How can you compare two strings in JavaScript, ignoring case differences?

Answer

One straightforward method for case insensitive comparison, especially when dealing with basic English characters, is to utilize the toUpperCase() method. By converting both strings to uppercase, you effectively disregard case differences:

var areEqual = string1.toUpperCase() === string2.toUpperCase();

However, it's important to note that this approach may not handle Unicode characters correctly. For more accurate comparisons, refer to the other suggested answers that provide a comprehensive solution.

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