Number.prototype.toPrecision

Returns a string containing a number represented either in exponential or fixed-point notation with a specified number of digits.

Syntax

toPrecision(precision?)

Parameters

• precision optional

  Number of significant digits. Must be in the range from 1 to 100, inclusive. If omitted, as many digits as necessary are used to represent the number.

Return value

A string representation of the number.

Examples

(1234.5678).toPrecision(2)

"1.2e+3"

(1234.5678).toPrecision(6)

"1234.57"