# 数组
# 通过修改数组索引新增数组元素
可以通过修改数组索引的方式追加数组元素
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5var numbers = [0,1,2,3,4];
console.log(numbers.length);
numbers.length = 10;
console.log(numbers);
console.log(numbers.length)新增数组元素
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5var numebrs = [0,1,2,3,4];
console.log(numebrs.length);
numebrs[8] = 1;
console.log(numebrs);
console.log(numebrs.length);
