description

# JSSymbol extension type

A JavaScript `Symbol`.

on
  - JSSymbolType
Implemented types
  - JSAny
  - Object
Available extensions
  - JSAnyOperatorExtension
  - JSAnyUtilityExtension
  - NullableUndefineableJSAnyExtension

Annotations
  - @JS('Symbol')

## Constructors

JSSymbol([String? description])
  Creates a new, unique JavaScript `Symbol`.

## Properties

description → String
  A string containing the description of the symbol, as passed to JSSymbol.new.
  no setter
hashCode → int
  The hash code for this object.
  no setter inherited
isDefinedAndNotNull → bool

  Available on JSAny?, provided by the NullableUndefineableJSAnyExtension extension

  no setter
isNull → bool

  Available on JSAny?, provided by the NullableUndefineableJSAnyExtension extension

  Whether this value corresponds to JavaScript `null`.
  no setter
isTruthy → JSBoolean

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of `!!`this`` in JavaScript.
  no setter
isUndefined → bool

  Available on JSAny?, provided by the NullableUndefineableJSAnyExtension extension

  Whether this value corresponds to JavaScript `undefined`.
  no setter
isUndefinedOrNull → bool

  Available on JSAny?, provided by the NullableUndefineableJSAnyExtension extension

  no setter
key → String?
  Returns the shared symbol key from the global symbol registry for this symbol (as registered with forKey), if this symbol was created with JSSymbol.forKey.
  no setter
not → JSBoolean

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of `!`this`` in JavaScript.
  no setter
runtimeType → Type
  A representation of the runtime type of the object.
  no setter inherited

## Methods

add(JSAny? any) → JSAny

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` + `any`` in JavaScript.
and(JSAny? any) → JSAny?

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` && `any`` in JavaScript.
dartify() → Object?

  Available on JSAny?, provided by the JSAnyUtilityExtension extension

  Converts a JavaScript JSON-like value to the Dart equivalent if possible.
divide(JSAny? any) → JSAny

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` / `any`` in JavaScript.
equals(JSAny? any) → JSBoolean

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` == `any`` in JavaScript.
exponentiate(JSAny? any) → JSAny

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` ** `any`` in JavaScript.
greaterThan(JSAny? any) → JSBoolean

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` > `any`` in JavaScript.
greaterThanOrEqualTo(JSAny? any) → JSBoolean

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` >= `any`` in JavaScript.
instanceof(JSFunction<Function> constructor) → bool

  Available on JSAny?, provided by the JSAnyUtilityExtension extension

  Whether this `JSAny?` is an `instanceof` `constructor`.
instanceOfString(String constructorName) → bool

  Available on JSAny?, provided by the JSAnyUtilityExtension extension

  Whether this `JSAny?` is an `instanceof` the constructor that is defined by `constructorName`, which is looked up in the globalContext.
lessThan(JSAny? any) → JSBoolean

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` < `any`` in JavaScript.
lessThanOrEqualTo(JSAny? any) → JSBoolean

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` <= `any`` in JavaScript.
modulo(JSAny? any) → JSAny

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` % `any`` in JavaScript.
multiply(JSAny? any) → JSAny

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` * `any`` in JavaScript.
noSuchMethod(Invocation invocation) → dynamic
  Invoked when a nonexistent method or property is accessed.
  inherited
notEquals(JSAny? any) → JSBoolean

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` != `any`` in JavaScript.
or(JSAny? any) → JSAny?

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` || `any`` in JavaScript.
strictEquals(JSAny? any) → JSBoolean

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` === `any`` in JavaScript.
strictNotEquals(JSAny? any) → JSBoolean

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` !== `any`` in JavaScript.
subtract(JSAny? any) → JSAny

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` - `any`` in JavaScript.
toString() → String
  A string representation of this object.
  inherited
typeofEquals(String typeString) → bool

  Available on JSAny?, provided by the JSAnyUtilityExtension extension

  Whether the result of `typeof` on this `JSAny?` is `typeString`.
unsignedRightShift(JSAny? any) → JSNumber

  Available on JSAny?, provided by the JSAnyOperatorExtension extension

  The result of ``this` >>> `any`` in JavaScript.

## Operators

operator ==(Object other) → bool
  The equality operator.
  inherited

## Static Properties

asyncIterator → JSSymbol
  See `Symbol.asyncIterator`.
  no setter
hasInstance → JSSymbol
  See `Symbol.hasInstance`.
  no setter
isConcatSpreadable → JSSymbol
  See `Symbol.isConcatSpreadable`.
  no setter
iterator → JSSymbol
  See `Symbol.iterator`.
  no setter
match → JSSymbol
  See `Symbol.match`.
  no setter
matchAll → JSSymbol
  See `Symbol.matchAll`.
  no setter
replace → JSSymbol
  See `Symbol.replace`.
  no setter
search → JSSymbol
  See `Symbol.search`.
  no setter
species → JSSymbol
  See `Symbol.species`.
  no setter
split → JSSymbol
  See `Symbol.split`.
  no setter
toPrimitive → JSSymbol
  See `Symbol.toPrimitive`.
  no setter
toStringTag → JSSymbol
  See `Symbol.toStringTag`.
  no setter
unscopables → JSSymbol
  See `Symbol.unscopables`.
  no setter

## Static Methods

forKey(String key) → JSSymbol
  Searches for an existing symbol in a runtime-wide symbol registry with the given key and returns it if found.