The valueOf()
method returns the wrapped primitive value of a Number
object.
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Syntax
numObj.valueOf()
Return value
A number representing the primitive value of the specified Number
object.
Description
This method is usually called internally by JavaScript and not explicitly in web code.
Examples
Using valueOf
let numObj = new Number(10) console.log(typeof numObj) // object let num = numObj.valueOf() console.log(num) // 10 console.log(typeof num) // number
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Number.prototype.valueOf' in that specification. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
valueOf | Chrome Full support 1 | Edge Full support 12 | Firefox Full support 1 | IE Full support 4 | Opera Full support 4 | Safari Full support 1 | WebView Android Full support 1 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 10.1 | Safari iOS Full support 1 | Samsung Internet Android Full support 1.0 | nodejs Full support 0.1.100 |
Legend
- Full support
- Full support