forked from zhurui/management
34 lines
587 B
JavaScript
34 lines
587 B
JavaScript
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/*!
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* array-slice <https://github.com/jonschlinkert/array-slice>
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*
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* Copyright (c) 2014-2017, Jon Schlinkert.
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* Released under the MIT License.
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*/
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'use strict';
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module.exports = function slice(arr, start, end) {
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var len = arr.length;
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var range = [];
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start = idx(len, start);
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end = idx(len, end, len);
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while (start < end) {
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range.push(arr[start++]);
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}
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return range;
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};
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function idx(len, pos, end) {
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if (pos == null) {
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pos = end || 0;
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} else if (pos < 0) {
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pos = Math.max(len + pos, 0);
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} else {
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pos = Math.min(pos, len);
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}
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return pos;
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}
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