Symbol.prototype.toString()
The toString()
method returns a string representing the specified Symbol
object.
Syntax
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 Language Specification # sec-symbol.prototype.tostring |
Browser compatibility
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