| title | tags |
|---|---|
isUpperCase |
string,beginner |
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'); // false