need your help. I have an array like;
const arr =
[ { item: { 0: 'asd' }, que: '1.question asdsad ... ' }
, { item: { 0: 'asd' }, que: '2.question asdsad ... ' }
, { item: { 0: 'asd', 1: 'asdsa', 2: 'asdsa', 3: 'asdsa' }, que: '3.question asdsad ... ' }
, { item: { 0: 'xx', 1: 'ssss', 2: 'ggg' }, que: 'Question asdsad ... ' }
, { item: { 0: 'asd' }, que: '4.question asdsad ... ' }
, { item: { 0: 'asd' }, que: '5.sdd asdsad ... ' }
, { item: { 0: 'bbb', 1: 'bbb' }, que: 'Dsad question asdsad ... ' }
]
As you see each of them has different datas. I want to create new array like chunk array. But it has to be;
**Maximum array length = 2
**Order must be same
**if array item length bigger than 3 or equal, it creates self array.
**if array item que does not begin with number, it create self array.
Expected output is;
const expArr =
[ [ { item: { 0: 'asd' }, que: '1.question asdsad ... ' }
, { item: { 0: 'asd' }, que: '2.question asdsad ... ' }
]
, [ { item: { 0: 'asd', 1: 'asdsa', 2: 'asdsa', 3: 'asdsa' }, que: '3.question asdsad ... ' } ]
, [ { item: { 0: 'xx', 1: 'ssss', 2: 'ggg' }, que: 'Question asdsad ... ' } ]
, [ { item: { 0: 'asd' }, que: '4.question asdsad ... ' }
, { item: { 0: 'asd' }, que: '5.sdd asdsad ... ' }
]
, [ { item: { 0: 'bbb', 1: 'bbb' }, que: 'Dsad question asdsad ... ' } ]
]
I tried to chunk method of splitting array.
arr.reduce((prev, next) => {
if(Object.keys(next.item).length >= 3) {
// Can be what
}
if(isNaN(next.que.split('')[0])) {
// Can be what
}
})
Above function still give me two sized array, not rule applies
Basically you can loop each object and within an if statement figure out if it the object is added to a new array or if it is added to the existing array. It is easier to see in this snippet:
const arr =
[ { item: { 0: 'asd' }, que: '1.question asdsad ... ' }
, { item: { 0: 'asd' }, que: '2.question asdsad ... ' }
, { item: { 0: 'asd', 1: 'asdsa', 2: 'asdsa', 3: 'asdsa' }, que: '3.question asdsad ... ' }
, { item: { 0: 'xx', 1: 'ssss', 2: 'ggg' }, que: 'Question asdsad ... ' }
, { item: { 0: 'asd' }, que: '4.question asdsad ... ' }
, { item: { 0: 'asd' }, que: '5.sdd asdsad ... ' }
, { item: { 0: 'bbb', 1: 'bbb' }, que: 'Dsad question asdsad ... ' }
];
let arNew = [];
let arTmp = [];
let sCurItemO = '';
for(const obj of arr){
if(obj.item['0'] != sCurItemO || arTmp.length == 2 || Object.keys(obj.item).length > 2 || isNaN(obj.que.substring(0, 1))){
if(arTmp.length)
arNew.push(arTmp)
arTmp = [obj]
}
else
arTmp.push(obj);
sCurItemO = obj.item['0'];
}
arNew.push(arTmp);
console.log(arNew)I see that this way...
const arr =
[ { item: { 0: 'asd' }, que: '1.question asdsad ... ' }
, { item: { 0: 'asd' }, que: '2.question asdsad ... ' }
, { item: { 0: 'asd', 1: 'asdsa', 2: 'asdsa', 3: 'asdsa' }, que: '3.question asdsad ... ' }
, { item: { 0: 'xx', 1: 'ssss', 2: 'ggg' }, que: 'Question asdsad ... ' }
, { item: { 0: 'asd' }, que: '4.question asdsad ... ' }
, { item: { 0: 'asd' }, que: '5.sdd asdsad ... ' }
, { item: { 0: 'bbb', 1: 'bbb' }, que: 'Dsad question asdsad ... ' }
]
const maxSize = 2
const itemMax = 3
const result = []
let lastArr = null
for (let row of arr)
{
let len = Object.keys(row.item).length
if ((len >= itemMax) || isNaN(row.que.charAt(0)))
{
result.push([row])
lastArr = null
}
else
{
if (!lastArr || lastArr.length >= maxSize)
{
lastArr = new Array()
result.push(lastArr)
}
lastArr.push(row)
}
}
console.log( result ).as-console-wrapper { max-height: 100% !important; top: 0 }