ajax获得json对象数组 循环输出数据的方法

var obj= [{id: 1, pId: 0, name: "采购商品", open: true}, {id: 2, pId: 1, name: "雨伞2", open: true}, {id: 2, pId: 1, name: "雨伞2", open: true}, {id: 2, pId: 1, name: "雨伞2", open: true}];var x='';  $.each(obj, function (n, value) {  // alert(n + ' ' + value);   var trs = "";   trs += "<tr><td>" + value.name + "</td> <td>" + value.id + "</td></tr>";   x += trs;  });  $("#project").append(x);