JS Practice — Built-in Objects

toExponential() — with fractionDigits

📖 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.

toExponential(fractionDigits)

Specify the number of digits after the decimal point in the mantissa.

(0.00123).toExponential(2)  // → '1.23e-3'

💡 Hints (1)