<div style="padding: 10px;">
  <button class="king-btn-demo king-btn king-success" id="update_id">UPDATE</button>
  ID : <input id = "id_up" type="text">
  NAME : <input id = "name_up" type="text">
  AGE : <input id = "age_up" type="text">
</div>
$("#update_id").click(
  function user_update() {
    data = {
      id:$("#id_up").val(),
      name:$("#name_up").val(),
      age:$("#age_up").val()
    }
    data = JSON.stringify(data);
    $.post("http://127.0.0.1:8000/"+'user_update/',data,function (res) {
      if (res.result){
        alert('update success!!!')
      }
      else {
        alert(res.message)
      }

    })
  }
)

def user_update(request):
  data = json.loads(request.body)
  print data
  id = data["id"]
  name = data["name"]
  age = data["age"]
  User.objects.filter(id=id).update(name=name,age=age)
  return render_json({'result':True})