Question

我正在尝试创建一个简单的网络应用，它可以获取存储在JSON字符串中的纬度和经度，并使用它们在谷歌地图上放置标记。目前，我在服务器上有一个程序，当URL被输入到Web浏览器中时，它会检索带有数据的JSON字符串。生成的JSON字符串如下： -

{"employees":[{"email":"bones93@hotmail.co.uk","lat":"53","lon":"-3","alt":"0","date":"unknown","time":"unknown"},{"email":"unknown","lat":"0","lon":"0","alt":"0","date":"unknown","time":"unknown"},{"email":"unknown","lat":"0","lon":"0","alt":"0","date":"unknown","time":"unknown"}]}

我可以在JavaScript中使用哪种方法来获取生成的JSON字符串？

P.S我知道我之后需要解析文本来制作一个JSON对象，这可以在之后完成。

Answer 1

使用Jquery库的get方法从服务器请求数据。这是一个简单的W3教程的链接：http://www.w3schools.com/jquery/ajax_get.asp

您的代码将如下所示：

$("button").click(function(){
  $.get("/your/server/url",function(data){
    var result = JSON.parse(data);
    // Process result.employees
  });
});

Answer 2

您可以使用

var x = JSON.parse('{"employees":[{"email":"bones93@hotmail.co.uk","lat":"53","lon":"-3","alt":"0","date":"unknown","time":"unknown"},{"email":"unknown","lat":"0","lon":"0","alt":"0","date":"unknown","time":"unknown"},{"email":"unknown","lat":"0","lon":"0","alt":"0","date":"unknown","time":"unknown"}]}');

然后使用以下命令访问它：

x["employees"][0]["lat"];

Answer 3

尝试使用普通字符串：

JSON.parse(str)

或者如果你使用AJAX来获取Json，你可以使用如下：

$.get(..,'json')

或

$.post(..,'json')

使用Javascript读取URL中显示的JSON字符串

3 个答案: