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Title: Array: length - JavaScript | MDN

Open Graph Title: Array: length - JavaScript | MDN

Description: The length data property of an Array instance represents the number of slots in that array. The value is an unsigned, 32-bit integer that is always numerically greater than the highest index in the array. It may be greater than the number of elements if the array is sparse.

Open Graph Description: The length data property of an Array instance represents the number of slots in that array. The value is an unsigned, 32-bit integer that is always numerically greater than the highest index in the array. It may be greater than the number of elements if the array is sparse.

Opengraph URL: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length

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sparsehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array#array_methods_and_empty_slots
Try ithttps://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/length#try_it
Valuehttps://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/length#value
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Try ithttps://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/length#try_it
Valuehttps://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/length#value
Descriptionhttps://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/length#description
empty slotshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Indexed_collections#sparse_arrays
array methods and empty slotshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array#array_methods_and_empty_slots
Relationship between length and numerical propertieshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array#relationship_between_length_and_numerical_properties
Exampleshttps://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/length#examples
Iterating over an arrayhttps://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/length#iterating_over_an_array
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Create empty array of fixed lengthhttps://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/length#create_empty_array_of_fixed_length
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ECMAScript® 2027 Language Specification# sec-properties-of-array-instances-lengthhttps://tc39.es/ecma262/multipage/indexed-collections.html#sec-properties-of-array-instances-length
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from()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/from
fromAsync()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fromAsync
isArray()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray
of()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/of
[Symbol.species]https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.species
at()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at
concat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/concat
copyWithin()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/copyWithin
entries()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/entries
every()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every
fill()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/fill
filter()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
find()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
findIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex
findLast()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLast
findLastIndex()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLastIndex
flat()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flat
flatMap()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap
forEach()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
includes()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes
indexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
join()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join
keys()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/keys
lastIndexOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/lastIndexOf
map()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
pop()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/pop
push()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push
reduce()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce
reduceRight()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduceRight
reverse()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse
shift()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/shift
slice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/slice
some()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some
sort()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
splice()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toLocaleString
toReversed()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toReversed
toSorted()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSorted
toSpliced()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toSpliced
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toString
unshift()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/unshift
values()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/values
with()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/with
[Symbol.iterator]()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.iterator
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/length
[Symbol.unscopables]https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Symbol.unscopables
Object/Functionhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object
apply()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/apply
bind()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind
call()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/toString
[Symbol.hasInstance]()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/Symbol.hasInstance
displayNamehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/displayName
lengthhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length
namehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name
prototypehttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/prototype
argumentshttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/arguments
callerhttps://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/caller
__defineGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__
__defineSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineSetter__
__lookupGetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupGetter__
__lookupSetter__()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupSetter__
hasOwnProperty()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
isPrototypeOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf
propertyIsEnumerable()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable
toLocaleString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString
toString()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
valueOf()https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf
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