你如何序列化Ember对象？

const obj = Ember.Object.create({
  name: 'John',
  age: 30,
  city: 'New York'
});

const json = obj.serialize();
console.log(json); // 输出：{"name":"John","age":30,"city":"New York"}

const obj = Ember.Object.create({
  name: 'John',
  age: 30,
  city: 'New York'
});

const json = JSON.stringify(obj);
console.log(json); // 输出：{"name":"John","age":30,"city":"New York"}

const obj = Ember.Object.create({
  name: 'John',
  age: 30,
  city: 'New York'
});

const htmlSafeString = Ember.String.htmlSafe(obj);
console.log(htmlSafeString); // 输出：<span class="ember-view">John</span>

const json = '{"name":"John","age":30,"city":"New York"}';
const obj = Ember.Object.create(JSON.parse(json));
console.log(obj); // 输出：Object {name: "John", age: 30, city: "New York"}

const htmlSafeString = '<span class="ember-view">John</span>';
const obj = Ember.Object.create(Ember.String.htmlSafe(htmlSafeString));
console.log(obj); // 输出：Object {name: "John", age: 30, city: "New York"}