JS Practice — Built-in Objects

Number.isInteger() — integer returns true

📖 Usage Example

// Check if a value is an integer
Number.isInteger(42)    // → true
Number.isInteger(42.5)  // → false
Number.isInteger('42')  // → false

Use Number.isInteger() to verify that a value is a whole number, without type coercion.

Number.isInteger()

Number.isInteger(value) returns true if the value is a finite integer.

💡 Hints (1)