관리-도구

편집 파일: take.js

var baseSlice = require('../internal/baseSlice'), isIterateeCall = require('../internal/isIterateeCall'); /** * Creates a slice of `array` with `n` elements taken from the beginning. * * @static * @memberOf _ * @category Array * @param {Array} array The array to query. * @param {number} [n=1] The number of elements to take. * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. * @returns {Array} Returns the slice of `array`. * @example * * _.take([1, 2, 3]); * // => [1] * * _.take([1, 2, 3], 2); * // => [1, 2] * * _.take([1, 2, 3], 5); * // => [1, 2, 3] * * _.take([1, 2, 3], 0); * // => [] */ function take(array, n, guard) { var length = array ? array.length : 0; if (!length) { return []; } if (guard ? isIterateeCall(array, n, guard) : n == null) { n = 1; } return baseSlice(array, 0, n < 0 ? 0 : n); } module.exports = take;