个回答

• aarondeng

  2017-04-18 11:29:35

  var arr = [function(){}, null, [1,2,3], "4578", 2, false];
  var typeName = "";
  for(key in arr){
     typeName += typeof(arr[key]) + ", ";
  }
  document.write(typeName);

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• 热爱我的热爱

  2017-04-18 11:16:09

  js数据类型判断和数组判断

  
  

  0