vue hello world项目
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var global = require('../internals/global');
var toAbsoluteIndex = require('../internals/to-absolute-index');
var lengthOfArrayLike = require('../internals/length-of-array-like');
var createProperty = require('../internals/create-property');
var Array = global.Array;
var max = Math.max;
module.exports = function (O, start, end) {
var length = lengthOfArrayLike(O);
var k = toAbsoluteIndex(start, length);
var fin = toAbsoluteIndex(end === undefined ? length : end, length);
var result = Array(max(fin - k, 0));
for (var n = 0; k < fin; k++, n++) createProperty(result, n, O[k]);
result.length = n;
return result;
};