分页Javascript数组 [英] Paginate Javascript array

问题描述

我正在尝试编写一个 Javascript 函数，它以 array、page_size 和 page_number 作为参数并返回一个模拟分页结果的数组:

I am trying to write a Javascript function that takes an array, page_size and page_number as parameters and returns an array that mimics paginated results:

paginate: function (array, page_size, page_number) {
  return result;
}

例如当:

array = [1, 2, 3, 4, 5],
page size = 2,
page_number = 2,

函数应该返回:[3, 4].

任何想法将不胜感激.

推荐答案

您可以使用 Array.prototype.slice 并提供 (start, end) 的参数.

You can use Array.prototype.slice and just supply the params for (start, end).

function paginate(array, page_size, page_number) {
  // human-readable page numbers usually start with 1, so we reduce 1 in the first argument
  return array.slice((page_number - 1) * page_size, page_number * page_size);
}

console.log(paginate([1, 2, 3, 4, 5, 6], 2, 2));
console.log(paginate([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], 4, 1));

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