在Javascript操作JSON对象，增加删除修改全有的，详情见代码

代码如下:

<script type="text/javascript">

  var jsonObj2 = { teacher: [

    { name: "jordan", sex: "m", age: "40" },

    { name: "bryant", sex: "m", age: "28" },

    { name: "McGrady", sex: "m", age: "27" }

  ]};

  var jsonObj2New = {};

  $("#btn").click(function () {

    //invoke the update

    updateData("jordan");

    var persons = jsonObj2.teacher;

    for (var i = 0; i < persons.length; i++) {

      var cur_person = persons[i];

      alert(cur_person.sex);

    }

    //invoke the delete

    deleteData("jordan");

    var persons = jsonObj2.teacher;

    for (var i = 0; i < persons.length; i++) {

      var cur_person = persons[i];

      alert(cur_person.sex);

    }

    //push 

    var temp = { name: "kenny", sex: "m", age: "25" };

    jsonObj2.teacher.push(temp);

    var persons = jsonObj2.teacher;

    for (var i = 0; i < persons.length; i++) {

      var cur_person = persons[i];

      alert(cur_person.name);

    }

  });

  function updateData(name) {

    var persons = jsonObj2.teacher;

    //alert(name);

    for (var i = 0; i < persons.length; i++) {

      var cur_person = persons[i];

      if (cur_person.name == name) {

        persons[i].sex = "f";

      }

    }

  }

  function deleteData(name) {

    var persons = jsonObj2.teacher;

    //alert(name);

    for (var i = 0; i < persons.length; i++) {

      var cur_person = persons[i];

      if (cur_person.name == name) {

        jsonObj2.teacher.splice(i, 1);

      }

    }

  }

  </script>

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