Math.exp() - JavaScript 编辑

The Math.exp() function returns ex, where x is the argument, and e is Euler's number (also known as Napier's constant), the base of the natural logarithms.

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The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Syntax

Math.exp(x)

Parameters

x

A number.

Return value

A number representing ex, where e is Euler's number and x is the argument.

Description

Because exp() is a static method of Math, you always use it as Math.exp(), rather than as a method of a Math object you created (Math is not a constructor).

Examples

Using Math.exp()

Math.exp(-1); // 0.36787944117144233
Math.exp(0);  // 1
Math.exp(1);  // 2.718281828459045

Specifications

Specification
ECMAScript (ECMA-262) The definition of 'Math.exp' in that specification.

Browser compatibility

BCD tables only load in the browser

See also

• Math.E
• Math.expm1()
• Math.log()
• Math.log10()
• Math.log1p()
• Math.log2()
• Math.pow()