代码示例:(标识:eg_js_json_object_nested)
<!DOCTYPE html>
<html>
<body>

<h1>JSON 对象</h1>

<p>如何访问嵌套的 JSON 对象。</p>

<p id="demo"></p>

<script>
var myObj = {
  "name":"Bill Gates",
  "age":62,
  "cars": {
  "car1":"Porsche",
  "car2":"BMW",
  "car3":"Volvo"
  }
}
document.getElementById("demo").innerHTML += myObj.cars.car2 + "<br>";
//or:
document.getElementById("demo").innerHTML += myObj.cars["car2"];
</script>

</body>
</html>
运行结果: