EN
Size: a a a
EN
VP
let arr=[[1,2,3],[4,5,6]]
let createCol=(el,i)=>`Col${i+1}`;
let newArr=new Array(arr.length).map(createCol)
//Возвращает [null, null] А должно [Col1,Col2]
A
v
MP
let arr=[[1,2,3],[4,5,6]]
let createCol=(el,i)=>`Col${i+1}`;
let newArr=new Array(arr.length).map(createCol)
//Возвращает [null, null] А должно [Col1,Col2]
MP
A
VP
> var createCol=(el) => el.map((x)=>`Col${x}`)
> createCol([1,2,3])
Array(3) [ "Col1", "Col2", "Col3" ]
OZ
EN
v
> var createCol=(el) => el.map((x)=>`Col${x}`)
> createCol([1,2,3])
Array(3) [ "Col1", "Col2", "Col3" ]
OZ
A
EN
OZ
EN
VP
FK
IB
OZ