The toString()
method returns a string representing the specified Symbol
object.
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Syntax
Symbol().toString()
Return value
A string representing the specified Symbol
object.
Description
The Symbol
object overrides the toString
method of the Object
object; it does not inherit Object.prototype.toString()
. For Symbol
objects, the toString
method returns a string representation of the object.
No string concatenation
While you can call toString()
on Symbols, you cannot use string concatenation with them:
Symbol('foo') + 'bar' // TypeError: Can't convert symbol to string
Examples
Using toString
Symbol('desc').toString() // "Symbol(desc)" // well-known symbols Symbol.iterator.toString() // "Symbol(Symbol.iterator) // global symbols Symbol.for('foo').toString() // "Symbol(foo)"
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Symbol.prototype.toString' in that specification. |
Browser compatibility
The compatibility table on 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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
toString | Chrome Full support 38 | Edge Full support 12 | Firefox Full support 36 | IE No support No | Opera Full support 25 | Safari Full support 9 | WebView Android Full support 38 | Chrome Android Full support 38 | Firefox Android Full support 36 | Opera Android Full support 25 | Safari iOS Full support 9 | Samsung Internet Android Full support 3.0 | nodejs Full support 0.12 |
Legend
- Full support
- Full support
- No support
- No support