What is the best way to combine limit and fill() in one array?

Question

What is the best way to combine limit and fill() in one array?

I am looking to incorporate both limit and fill within the same array.

var array = new Array(4).fill({});
var limit = 4;

If there are dynamic records, the number may vary but I only need 4 records to display. For example: eg-1 records = 20 It should display only the first 8 records in the array. Output:

[{record 1},{record 2},{record 3},{record 4}]

Eg-2: Records = 2; It should display those 2 records and the remaining 6 indices should be filled with {} Output:

[{record 1},{record 2},{},{}]

So how can I accomplish this?

javascript arrays

Answer 1

Answer №1

To determine the length of the array generated, you can use the limit parameter. If it is shorter than expected, you can add a new array to the existing one using the Array.concat() method. The array can be generated using Array.from().

var obj = [1,2,3,4,5,6],
    limit = 4,
    index = 4,
    arr = obj.slice(index, index+limit),
    newArr = arr.length < limit ? arr.concat(Array.from({length: limit - arr.length }, _ => ({}))) : arr;
console.log(newArr);

Answer 2

To determine the length of the array generated, you can use the limit parameter. If it is shorter than expected, you can add a new array to the existing one using the Array.concat() method. The array can be generated using Array.from().

var obj = [1,2,3,4,5,6],
    limit = 4,
    index = 4,
    arr = obj.slice(index, index+limit),
    newArr = arr.length < limit ? arr.concat(Array.from({length: limit - arr.length }, _ => ({}))) : arr;
console.log(newArr);

Answer 3

Answer №2

Give this a shot.

function filterArray(arr, maxLimit) {
let filteredArr = arr.filter((element, idx) => {
    if (maxLimit >= idx) {
        return element;
    } else {
        return {};
    }
});
return filteredArr;

}

Answer 4

Give this a shot.

function filterArray(arr, maxLimit) {
let filteredArr = arr.filter((element, idx) => {
    if (maxLimit >= idx) {
        return element;
    } else {
        return {};
    }
});
return filteredArr;

}

What is the best way to combine limit and fill() in one array?

Answer №1

Answer №2

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