JavaScript toLowerCase() function
The str.toLowerCase() function converts the entire string to lowercase. This function does not affect any of the special characters, digits, and alphabets that are already in lowercase.
Syntax:
string.toLowerCase();
Example: This example uses the toLowerCase() function to compare two strings.
let str1 = "this iS geeks";
let str2 = "This IS GeeksfOrgeeks";
console.log(str1)
console.log(str2)
function myGeeks() {
let areEqual = str1.toLowerCase() === str2.toLowerCase();
console.log(areEqual);
}
myGeeks()
Output
this iS geeks This IS GeeksfOrgeeks false
Compare the Case Insensitive strings in JavaScript
Comparing strings in a case-insensitive manner means comparing them without taking care of the uppercase and lowercase letters.
Here are some common approaches to compare the case-insensitive string in JavaScript:
Table of Content
- JavaScript toUpperCase() function
- JavaScript toLowerCase() function
- Using localCompare()
- Using regular expression