The valueOf()
method returns the primitive value of a String
object.
Syntax
str.valueOf()
Return value
A string representing the primitive value of a given String
object.
Description
The valueOf()
method of String
returns the primitive value of a String
object as a string data type. This value is equivalent to String.prototype.toString()
.
This method is usually called internally by JavaScript and not explicitly in code.
Examples
Using valueOf()
var x = new String('Hello world'); console.log(x.valueOf()); // Displays 'Hello world'
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'String.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 3 | 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