js part

_this.ajaxPost(appUrl + "reports/appointment/save", post_str, function(response) {
  var res = eval("(" + response + ")");
  if (!res.error) {
    var data = res.msg;
  } else {
    if (res.status == "error") {
      _this.showPopMsg("error", 'Error when updating db ', res.msg);
    }
  }

}, function(response) {
  alert(response);
  var res = eval("(" + response + ")");
  _this.showPopMsg("error", 'Updating DB', res.msg);
});

php部分

echo json_encode(array("error"=> false, "status"=>"success", "msg"=>$conditions['reg']->result()));

返回响应，如

{"error":false,"status":"success","msg":[{"name":"dreamhunter","mob_num":"9876543210","email":"afl@thnfgd"}]}

我正在尝试使用 js 提取 msg 部分，msg部分包含一个类似

的数组

[{"name":"dream hunter","mob_num":"9876543210","email":"afl@thnfgd"}]

这里名称，mob-num和电子邮件是密钥，我正在尝试提取其值

我试过了

var res = eval("(" + response + ")");
var data = res.msg;
alert(data[name]);//which is the first key

哪个不行。我怎样才能提取这个？

Answer 1

假设您有以下回复：

var x = '{"error":false,"status":"success","msg":[{"name":"dreamhunter","mob_num":"9876543210","email":"afl@thnfgd"}]}'

使用JSON.Parse，您可以提取对象：

var y = JSON.parse(x);

现在你有一个像这样的对象：

{
    error:false,
    msg: [{
        email: "afl@thnfgd"
        mob_num: "9876543210"
        name: "dreamhunter"
    }],
    status:"success"
}

要访问第一条消息的属性，例如email，您可以执行此操作：

console.log(y.msg[0].email);

var x = '{"error":false,"status":"success","msg":[{"name":"dreamhunter","mob_num":"9876543210","email":"afl@thnfgd"}]}'
var y = JSON.parse(x);

console.log('msg[0].email: ', y.msg[0].email);

Answer 2

您可以使用以下方式查看数据： -

alert(data[0].name);

Answer 3

使用JSON对象方法在javascript中处理JSON。

例如

var data = JSON.parse('{"error":false,"status":"success","msg":[{"name":"dreamhunter","mob_num":"9876543210","email":"afl@thnfgd"}]}')

alert(data.msg[0].name)

如何使用js从ajax调用中提取响应？

js part

php部分

3 个答案: