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Showing content from https://webplatform.github.io/docs/javascript/Number/toExponential below:

toExponential · WebPlatform Docs

toExponential Summary

The toExponential() method formats a number to exponential notation.

Syntax

toExponential([ fractionDigits ])

fractionDigits: Optional. The number of digits after the decimal point. Must be in the range 0 - 20, inclusive.

Return Value

Returns a string representation of a number in exponential notation. The string contains one digit before the decimal point, and may contain fractionDigits digits after it.

If fractionDigits is not supplied, the toExponential method returns as many digits necessary to uniquely specify the number.

Examples

Using toExponential to format the text presentation of a number.

var pie = 3.14159;

pie.toPrecision();


pie.toPrecision(3);


pie.toPrecision(1);


pie.toPrecision(0);

Remarks Throws

RangeError when a fractionDigits outside the bounds of 0 - 20 (inclusive) was given.