<directory>
  <app>
    <title>Carrot</title>
    <url>www.carrot.com</url>
  </app>
  <app>
    <title>Cucumber</title>
    <url>www.cucumber.com</url>
  </app>
</directory>

假设我能够读取它并将内容存储为字符串：

s = '<directory><app><title>Carrot</title><url>www.google.com</url></app><app><title>Cucumber</title><url>www.cucumber.com</url></app></directory>';

如何将其转换为JavaScript对象,如下所示？

{
  "directory": {
    "app": [
      { "title": "Carrot","url": "www.carrot.com" },{ "title": "Cucumber","url": "www.cucumber.com" }
    ]  
  }
}