哪吒打字编程打字课 JavaS[数组函数]

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数组字面量的基本结构

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a

r

r

a

y

[ә'rei]

数组，有序的元素集合

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l

e

n

g

t

h

[leŋθ]

数组属性，表示元素数量

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i

n

d

e

x

['indeks]

数组索引，从0开始的整数位置

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e

l

e

m

e

n

t

['elimәnt]

数组元素，可以是任意类型

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p

u

s

h

[puʃ]

方法，在数组末尾添加元素

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p

o

p

[pɒp]

方法，移除并返回数组最后一个元素

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s

h

i

f

t

[ʃift]

方法，移除并返回数组第一个元素

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u

n

s

h

i

f

t

[ʌn'ʃift]

方法，在数组开头添加元素

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c

o

n

c

a

t

方法，合并多个数组

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j

o

i

n

[dʒɒin]

方法，将数组元素连接为字符串

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s

l

i

c

e

[slais]

方法，返回数组的浅拷贝部分

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s

p

l

i

c

e

[splais]

方法，添加/删除/替换数组元素

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r

e

v

e

r

s

e

[ri'vә:s]

方法，反转数组顺序

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s

o

r

t

[sɒ:t]

方法，对数组元素排序

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f

i

l

t

e

r

['filtә]

方法，返回满足条件的元素新数组

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m

a

p

[mæp]

方法，对每个元素执行函数并返回新数组

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f

o

r

e

a

c

h

方法，对每个元素执行函数（无返回值）

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r

e

d

u

c

e

[ri'dju:s]

方法，从左到右累计处理数组元素

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r

e

d

u

c

e

r

i

g

h

t

方法，从右到左累计处理数组元素

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f

i

n

d

[faind]

方法，返回第一个满足条件的元素

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f

i

n

d

i

n

d

e

x

方法，返回第一个满足条件的元素索引

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s

o

m

e

[sʌm]

方法，检测是否有元素满足条件

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e

v

e

r

y

['evri]

方法，检测是否所有元素满足条件

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i

n

c

l

u

d

e

s

方法，检查数组是否包含某值

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i

n

d

e

x

o

f

方法，返回元素首次出现的索引

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l

a

s

t

i

n

d

e

x

o

f

方法，返回元素最后出现的索引

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f

i

l

l

[fil]

方法，用固定值填充数组

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c

o

p

y

w

i

t

h

i

n

方法，复制数组部分到其他位置

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f

l

a

t

[flæt]

方法，将嵌套数组"拉平"

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f

l

a

t

m

a

p

方法，先映射后拉平数组

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e

n

t

r

i

e

s

方法，返回键值对迭代器

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k

e

y

s

方法，返回键名迭代器

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v

a

l

u

e

s

方法，返回值迭代器

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f

r

o

m

[frɒm]

方法，从类数组对象创建数组

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i

s

a

r

r

a

y

方法，检查值是否为数组

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o

f

[ɒv]

方法，用参数创建新数组

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s

p

r

e

a

d

[spred]

展开运算符，复制或合并数组

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[

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a

r

r

]

展开语法，浅拷贝数组

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d

e

s

t

r

u

c

t

u

r

i

n

g

解构赋值，从数组提取值到变量

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[

f

i

r

s

t

,

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.

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r

e

s

t

]

剩余参数模式，收集剩余元素

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a

r

r

a

y

.

i

s

a

r

r

a

y

(

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判断是否为数组的函数

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a

r

r

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p

u

s

h

(

)

向数组末尾添加元素的函数

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a

r

r

.

p

o

p

(

)

删除并返回数组末尾元素的函数

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a

r

r

.

u

n

s

h

i

f

t

(

)

向数组开头添加元素的函数

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a

r

r

.

s

h

i

f

t

(

)

删除并返回数组开头元素的函数

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a

r

r

.

s

l

i

c

e

(

)

从数组提取部分元素的函数

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a

r

r

.

s

p

l

i

c

e

(

)

添加、删除或替换数组元素的函数

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a

r

r

.

c

o

n

c

a

t

(

)

合并多个数组的函数

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a

r

r

.

j

o

i

n

(

)

将数组元素转为字符串并拼接的函数

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a

r

r

.

r

e

v

e

r

s

e

(

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颠倒数组元素顺序的函数

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a

r

r

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s

o

r

t

(

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对数组元素排序的函数

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a

r

r

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m

a

p

(

)

对数组元素执行函数并返回新数组的函数

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a

r

r

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f

i

l

t

e

r

(

)

筛选符合条件元素组成新数组的函数

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