JS Practice — Built-in Objects

Array.prototype.every() — check non-empty strings

📖 Usage Example

const words = ['hello', 'world']
words.every(w => w.length > 3)   // → true
words.every(w => w.startsWith('h'))  // → false

Use every() to validate that all strings in an array meet a specific criterion.

Array.prototype.every() — string validation

every() can test any condition on any element type. Testing string length is a common use case for input validation.

Challenge: Implement allNonEmpty(strs) that returns true if every string in the array has a length greater than 0.

allNonEmpty(['hello', 'world']) // → true
allNonEmpty(['hello', ''])     // → false

💡 Hints (2)