javascript使用json(实例)

来源：互联网发布：网络教育考研究生编辑：程序博客网时间：2024/06/05 09:36

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  <title>Untitled Document</title>
  <script type="text/javascript" src="json.js"></script>
  <script type="text/javascript">
     function test() {
              var jsontext = '{"man":{"weight":"75kg", "age":"24"},"ar":["1", "2", "3", "4"]}';
     //解析json
     var aman = eval("("+jsontext+")");
     //取出json中的信息
     alert(aman.man.weight);
   }

   function showJSON() {
     var user = {
        "username":"andy",
      "age":"24",
      "info":{"tel":"123456", "cellphone":"98756"},
      "address":[
         {"city":"beijing", "postcode":"222233"},
      {"city":"newwork", "postcode":"444455"},
      ]

     }
     user.username = "tom";
     alert("username="+user.username);
     alert("age="+user.age);
     alert("info="+user.info.cellphone);
     alert("address第一个地址 =" + user.address[0].city);
     alert("address第二个地址 =" + user.address[1].city);
   }

   function showCar() {
    var carr = new Car("Donge", "Coronet R/T", 123, "yellow");
    alert(carr.toJSONString());
   }