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
Array
concat
constructor
copyWithin
entries
every
fill
filter
find
findIndex
forEach
from
indexOf
isArray
join
keys
lastIndexOf
length
map
name
of
pop
prototype
push
reduce
reduceRight
reverse
shift
slice
some
sort
splice
toLocaleString
toString
unshift
values 
ArrayBuffer
byteLength 
constructor
isView
length
name
prototype
slice
Boolean
constructor
length
name
prototype
toString
valueOf
DataView
buffer
byteLength
byteOffset
constructor
getFloat32
getFloat64
getInt16
getInt32
getInt8
getUint16
getUint32
getUint8
length
name
prototype
setFloat32
setFloat64
setInt16
setInt32
setInt8
setUint16
setUint32
setUint8
Date
constructor
getDate
getDay
getFullYear
getHours
getMilliseconds
getMinutes
getMonth
getSeconds
getTime
getTimezoneOffset
getUTCDate
getUTCDay
getUTCFullYear
getUTCHours
getUTCMilliseconds
getUTCMinutes
getUTCMonth
getUTCSeconds
length
name
now
parse
prototype
setDate
setFullYear
setHours
setMilliseconds
setMinutes
setMonth
setSeconds
setTime
setUTCDate
setUTCFullYear
setUTCHours
setUTCMilliseconds
setUTCMinutes
setUTCMonth
setUTCSeconds
toDateString
toISOString
toJSON
toLocaleDateString
toLocaleString
toLocaleTimeString
toString
toTimeString
toUTCString
UTC
valueOf
Error
constructor
length
message
name
prototype
toString
EvalError
constructor
length
name
prototype
Float32Array
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    
Float64Array
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    
Function
apply
bind
call
constructor
length
name
prototype
toString