JS Practice — Built-in Objects

toExponential() — basic usage

📖 Usage Example

// Format number in exponential notation
(12345).toExponential(2)    // → '1.23e+4'
(0.00123).toExponential(1)  // → '1.2e-3'

Use toExponential() to express a number in scientific notation, useful when displaying very large or very small values.

Number.prototype.toExponential()

num.toExponential(fractionDigits?) returns a string representing the number in exponential notation.

(12345).toExponential()  // → '1.2345e+4'

💡 Hints (1)