API Catalog

Visualize and analyze the API overlap between standards specifications and type systems within browsers.

Browser information was gathered by traversing the type system within the latest available version of the top browsers. Specification data was gathered by extracting Web IDL definitions from notable web specifications. Note that an API that is shown as detected does not necessarily mean it functions per specification; where the absence of an API under an interface could be due to the browser supporting an API in a different part of the prototype chain. This data is made publicly available to help each browser vendor work toward the goal of a more interoperable web platform. For more information, visit our FAQ page.

APIs by interface

API NameSpecificationsMicrosoft EdgeGoogle ChromeMozilla FirefoxApple Safari
Int16Array
@@toStringTag    
arguments    
buffer    
byteLength    
byteOffset    
BYTES_PER_ELEMENT
caller    
constructor
copyWithin    
entries    
every    
fill    
filter    
find    
findIndex    
forEach    
from    
indexOf    
join    
keys    
lastIndexOf    
length
map    
name
of    
prototype
reduce    
reduceRight    
reverse    
set    
slice    
some    
sort    
subarray    
toLocaleString    
toString    
values    
Int32Array
@@toStringTag    
arguments    
buffer    
byteLength    
byteOffset    
BYTES_PER_ELEMENT
caller    
constructor
copyWithin    
entries    
every    
fill    
filter    
find    
findIndex    
forEach    
from    
indexOf    
join    
keys    
lastIndexOf    
length
map    
name
of    
prototype
reduce    
reduceRight    
reverse    
set    
slice    
some    
sort    
subarray    
toLocaleString    
toString    
values    
Int8Array
@@toStringTag    
arguments    
buffer    
byteLength    
byteOffset    
BYTES_PER_ELEMENT
caller    
constructor
copyWithin    
entries    
every    
fill    
filter    
find    
findIndex    
forEach    
from    
indexOf    
join    
keys    
lastIndexOf    
length
map    
name
of    
prototype
reduce    
reduceRight    
reverse    
set    
slice    
some    
sort    
subarray    
toLocaleString    
toString    
values    
Intl
@@toStringTag    
arguments    
caller    
Collator
DateTimeFormat
name    
NumberFormat
JSON
@@toStringTag    
arguments    
caller    
name    
parse
stringify
Map
@@toStringTag
arguments    
caller    
clear
constructor
delete
entries
forEach
get
has
keys
length
name
prototype
set
values
Math
@@toStringTag    
abs
acos
acosh
arguments    
asin
asinh
atan
atan2
atanh
caller    
cbrt
ceil
clz32
cos
cosh
E
exp
expm1
floor
fround
hypot
imul
LN10
LN2
log
log10
LOG10E
log1p
log2
LOG2E
max
min
name    
PI
pow
random
round
sign
sin
sinh
sqrt
SQRT1_2
SQRT2
tan
tanh
trunc
Number
@@toStringTag    
arguments    
caller    
constructor
EPSILON
isFinite
isInteger
isNaN
isSafeInteger
length
MAX_SAFE_INTEGER
MAX_VALUE
MIN_SAFE_INTEGER
MIN_VALUE
name
NaN
NEGATIVE_INFINITY
parseFloat
POSITIVE_INFINITY
prototype
toLocaleString
valueOf
Object
@@toStringTag    
arguments    
assign
caller    
constructor
create
defineProperties
defineProperty
freeze
getOwnPropertyDescriptor
getOwnPropertyNames
getOwnPropertySymbols
getPrototypeOf
hasOwnProperty
is
isExtensible
isFrozen
isPrototypeOf
isSealed
keys
name
preventExtensions
propertyIsEnumerable
prototype
seal
setPrototypeOf
toLocaleString
toString
valueOf
Promise
@@toStringTag
arguments    
caller    
catch
constructor
length
name
prototype
race
reject
resolve
then