var nestedObj = {
  name: "John",
  age: 30,
  address: {
    street: "123 Main St",
    city: "New York",
    country: "USA"
  },
  hobbies: ["reading", "painting", "coding"]
};

function traverseObject(obj) {
  for (var key in obj) {
    if (typeof obj[key] === "object") {
      traverseObject(obj[key]);
    } else if (Array.isArray(obj[key])) {
      obj[key].forEach(function(element) {
        traverseObject(element);
      });
    } else {
      // 执行操作，例如将属性值附加到div元素
      var div = $("<div>").text(obj[key]);
      $("body").append(div);
    }
  }
}

$(document).ready(function() {
  traverseObject(nestedObj);
});