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29 lines
933 B
JavaScript
29 lines
933 B
JavaScript
5 years ago
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'use strict';
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var $export = require('./_export');
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var html = require('./_html');
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var cof = require('./_cof');
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var toAbsoluteIndex = require('./_to-absolute-index');
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var toLength = require('./_to-length');
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var arraySlice = [].slice;
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// fallback for not array-like ES3 strings and DOM objects
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$export($export.P + $export.F * require('./_fails')(function () {
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if (html) arraySlice.call(html);
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}), 'Array', {
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slice: function slice(begin, end) {
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var len = toLength(this.length);
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var klass = cof(this);
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end = end === undefined ? len : end;
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if (klass == 'Array') return arraySlice.call(this, begin, end);
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var start = toAbsoluteIndex(begin, len);
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var upTo = toAbsoluteIndex(end, len);
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var size = toLength(upTo - start);
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var cloned = new Array(size);
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var i = 0;
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for (; i < size; i++) cloned[i] = klass == 'String'
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? this.charAt(start + i)
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: this[start + i];
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return cloned;
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}
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});
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