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Symbol.prototype.valueOf()

The valueOf() method returns the primitive value of a Symbol object.

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

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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