如何返回已删除的对象？

Question

我希望test [0]不受影响，但我想从函数中删除test [1]。这就是我想到的。

var example = function(data){
  this.information = data;

  delete this;
  return this;
}

test[1] = example("hello");

Answer 1

Array.splice

是你的朋友。

var arr = ["a", "b", "c", "d"];
arr.splice(1, 1);

// Output: ["a", "c", "d"]

进一步阅读：https://msdn.microsoft.com/library/wctc5k7s%28v=vs.94%29.aspx