These global properties return a simple value. They have no properties or methods.
Function propertiesThese global functionsâfunctions which are called globally, rather than on an objectâdirectly return their results to the caller.
eval()
isFinite()
isNaN()
parseFloat()
parseInt()
decodeURI()
decodeURIComponent()
encodeURI()
encodeURIComponent()
escape()
Deprecatedunescape()
DeprecatedThese objects represent fundamental language constructs.
Error objectsError objects are a special type of fundamental object. They include the basic Error
type, as well as several specialized error types.
Error
AggregateError
EvalError
RangeError
ReferenceError
SuppressedError
SyntaxError
TypeError
URIError
InternalError
Non-standardThese are the base objects representing numbers, dates, and mathematical calculations.
Text processingThese objects represent strings and support manipulating them.
Indexed collectionsThese objects represent collections of data which are ordered by an index value. This includes (typed) arrays and array-like constructs.
Array
TypedArray
Int8Array
Uint8Array
Uint8ClampedArray
Int16Array
Uint16Array
Int32Array
Uint32Array
BigInt64Array
BigUint64Array
Float16Array
Float32Array
Float64Array
These objects represent collections which use keys. The iterable collections (Map
and Set
) contain elements which are easily iterated in the order of insertion.
These objects represent and interact with structured data buffers and data coded using JavaScript Object Notation (JSON).
Managing memoryThese objects interact with the garbage collection mechanism.
Control abstraction objectsControl abstractions can help to structure code, especially async code (without using deeply nested callbacks, for example).
Iterator
AsyncIterator
Promise
GeneratorFunction
AsyncGeneratorFunction
Generator
AsyncGenerator
AsyncFunction
DisposableStack
AsyncDisposableStack
Additions to the ECMAScript core for language-sensitive functionalities.
Intl
Intl.Collator
Intl.DateTimeFormat
Intl.DisplayNames
Intl.DurationFormat
Intl.ListFormat
Intl.Locale
Intl.NumberFormat
Intl.PluralRules
Intl.RelativeTimeFormat
Intl.Segmenter
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