The toString() method returns a string representing the specified Symbol object.



Return value

A string representing the specified Symbol object.


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 cannott use string concatenation with them:

Symbol('foo') + 'bar'        // TypeError: Can't convert symbol to string


Symbol('desc').toString()    // "Symbol(desc)"

// well-known symbols
Symbol.iterator.toString()   // "Symbol(Symbol.iterator)

// global symbols
Symbol.for('foo').toString() // "Symbol(foo)"


Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Symbol.prototype.toString' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Symbol.prototype.toString' in that specification.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
toStringChrome Full support 38Edge Full support 12Firefox Full support 36IE No support NoOpera Full support 25Safari Full support 9WebView Android Full support 38Chrome Android Full support 38Firefox Android Full support 36Opera Android Full support 25Safari iOS Full support 9Samsung Internet Android Full support 3.0nodejs Full support Yes


Full support  
Full support
No support  
No support

See also