JS Depth Copy Object Array example analysis _javascript skill

This paper analyzes the JS depth copy object Array. Share to everyone for your reference, specific as follows:

function Cloneobj (o)
{
  var isarray = o instanceof Array;
  var isobject = o instanceof Object;
  if (!isobject) return o;
  var n = (IsArray? [] : {});
  For (var k in o) n[k] = Cloneobj (O[k]);
  return n;
}

Problems encountered

typeof [] Result is Object
typeof {} result is Object

[] instanceof Array result is true
{} instanceof Object result to True
[] instanceof Object result also is true

Indicates that the Array in JS is a subclass of Object.

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I hope this article will help you with JavaScript programming.