The valueOf()
method returns the wrapped primitive value of a Number
object.
Number.prototype.valueOf()
Try it
Syntax
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
Browser compatibility
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
valueOf |
1
|
12
|
1
|
4
|
4
|
1
|
1
|
18
|
4
|
10.1
|
1
|
1.0
|
1.0
|
0.10.0
|
See also
© 2005–2022 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/valueOf