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
buffer    
byteLength    
byteOffset    
BYTES_PER_ELEMENT
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
buffer    
byteLength    
byteOffset    
BYTES_PER_ELEMENT
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
buffer    
byteLength    
byteOffset    
BYTES_PER_ELEMENT
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
Collator
constructor    
DateTimeFormat
length    
name    
NumberFormat
prototype    
JSON
constructor    
length    
name    
parse
prototype    
stringify
Map
clear
constructor
delete
entries
forEach
get
has
keys
length
name
prototype
set
size
values
Math
abs
acos
acosh
asin
asinh
atan
atan2
atanh
cbrt
ceil
clz32
constructor    
cos
cosh
E
exp
expm1
floor
fround
hypot
imul
length    
LN10
LN2
log
log10
LOG10E
log1p
log2
LOG2E
max
min
name    
PI
pow
prototype    
random
round
sign
sin
sinh
sqrt
SQRT1_2
SQRT2
tan
tanh
trunc
Number
constructor
EPSILON
iNaN    
isFinite
isInteger
isSafeInteger
length
MAX_SAFE_INTEGER
MAX_VALUE
MIN_SAFE_INTEGER
MIN_VALUE
name
NaN
NEGATIVE_INFINITY
parseFloat
parseInt
POSITIVE_INFINITY
prototype
toExponential
toFixed
toLocaleString
toPrecision
toString
valueOf
Object
assign
constructor
create
defineProperties
defineProperty
freeze
getOwnPropertyDescriptor
getOwnPropertyNames
getOwnPropertySymbols
getPrototypeOf
hasOwnProperty
is
isExtensible
isFrozen
isPrototypeOf
isSealed
keys
length
name
preventExtensions
propertyIsEnumerable
prototype
seal
setPrototypeOf
toLocaleString
toString
valueOf
Promise
all
catch
constructor
length
name
prototype
race
reject
resolve
then