ut2/lib/chunk.js

一个现代 JavaScript 实用工具库。[点击查看在线文档]。

'use strict';

var native = require('./internals/native.js');
var isArray = require('./isArray.js');
var toLength = require('./toLength.js');

function chunk(array, size) {
    if (size === void 0) { size = 1; }
    size = toLength(size);
    if (!isArray(array) || size < 1) {
        return [];
    }
    var length = array.length;
    var result = Array(native.mathCeil(length / size));
    var resIndex = 0, index = 0;
    while (index < length) {
        result[resIndex++] = array.slice(index, (index += size));
    }
    return result;
}

module.exports = chunk;