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Is uppercase used correctly JavaScript
For the purpose of this very problem, we define the correct use of uppercase letter by the following rules −
- All letters in a word are capitals, like "INDIA".
- All letters in a word are not capitals, like "example".
- Only the first letter in a word is capital, like "Ramesh".
We are required to write a JavaScript function that takes in a string determines whether or not the string complies with any of these three rules.
If it does then we return true, false otherwise.
Example
const detectCapitalUse = (word = '') => { let allCap = true; for (let i = 0; i < word.length; i++){ if (word.charAt(i) === word.charAt(i).toUpperCase()){ if (allCap) continue; else return false; } else { if (allCap && i > 1) return false; else allCap = false; }; }; return true; }; console.log(detectCapitalUse('INDIA')); console.log(detectCapitalUse('jdsdS')); console.log(detectCapitalUse('dsdsdsd'));
Output
And the output in the console will be −
true false true
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