log

log(number, base?) → number · Math

Logarithm with optional base. Without base, defaults to natural logarithm (base e).

• number (required): positive number

• base (optional): logarithm base (default: e)

log(100, 10)                             // 2
log(8, 2)                                // 3
log(e())                                 // 1 (natural log)