JavaScript中console.log打印对象与数组的用法详解

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>console.log test</title>
</head>
<script type="text/javascript">
var testobj =
  {
    'id': 1,
    'content': 'test',
    'firstname': function() {
      document.getElementById('firstname').value = "zhang";
    },
    'lastname': function() {
      document.getElementById('lastname').value = "ying";
    }
  };
<!-- 打印对像 -->
  console.log(testobj);
</script>
<body>
   <input type="text" id='firstname' name="firstname" value=''>
   <input type="text" id='lastname' name='lastname' value=''>
</body>
</html>