isUpperCase javascript Code Snippet in 2025
stringbeginner
Last Updated: 14 April 2025
Checks if a string is upper case.
- Convert the given string to upper case, using
String.prototype.toUpperCase()and compare it to the original.
const isUpperCase = str => str === str.toUpperCase();
isUpperCase('ABC'); // true
isUpperCase('A3@$'); // true
isUpperCase('aB4'); // falsejavascript snippet similar to isUpperCase For You in April 2025
Subscribe to our Newsletter
Subscribe to get resources directly to your inbox. You won't receive any spam! ✌️