jq 筛选json数据，根据某个属性查找对应的值

<html>
<head>
    <script type="text/javascript" src="http://www.w3school.com.cn/jquery/jquery.js"></script>
    <script type="text/javascript">
        var arr = [
          {
              "name": "apple",
              "count": "javascript"
          },
          {
              "name": "orange",
              "count": "w3school"
          },
          {
              "name": "pear",
              "count": "getJsonObj"
          },
          {
              "name": "banner",
              "count": "w3school"
          }
        ];

        function getJsonObj(keys) {
            var newArr = arr.filter(function (p) {
                return p.name === keys;
            });
            return newArr;
        }

        var obj = getJsonObj("orange")[0];
        var name = obj.name;
        var count = obj.count;
        console.log(obj);

        console.log(name,count);

    </script>
</head>
<body>

</body>
</html>