The valueOf()
method returns the primitive value of a Symbol object.
Symbol.prototype.valueOf()
Syntax
valueOf()
Return value
The primitive value of the specified Symbol
object.
Description
The valueOf()
method of Symbol
returns the primitive value of a Symbol object as a Symbol data type.
JavaScript calls the valueOf()
method to convert an object to a primitive value. You rarely need to invoke the valueOf()
method yourself; JavaScript automatically invokes it when encountering an object where a primitive value is expected.
Examples
Using valueOf()
const sym = Symbol("example"); sym === sym.valueOf(); // true
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 |
38
|
12
|
36
|
No
|
25
|
9
|
38
|
38
|
36
|
25
|
9
|
3.0
|
1.0
|
0.12.0
|
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/Symbol/valueOf