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我正在使用JavaScript构建JSON对象.我如何将以下数据插入到堆栈的底部:

"hello": { "label":"Hello", "url":"#hello" }

在以下变量中:

var ListData = {
  "main": {
    "label":"Main",
    "url":"#main"
  },
  "project": {
    "label":"Project",
    "url":"#project"
  },
  "settings": {
    "label":"Settings",
    "url":"#settings",
    "subnav":[
      {
        "label":"Privacy",
        "url":"#privacy"
      },
      {
        "label":"Security",
        "url":"#security"
      },
      {
        "label":"Advanced",
        "url":"#advanced"
      }
    ]
  }
};

所以变量看起来像:

var ListData = {
  "main": {
    "label":"Main",
    "url":"#main"
  },
  "project": {
    "label":"Project",
    "url":"#project"
  },
  "settings": {
    "label":"Settings",
    "url":"#settings",
    "subnav":[
      {
        "label":"Privacy",
        "url":"#privacy"
      },
      {
        "label":"Security",
        "url":"#security"
      },
      {
        "label":"Advanced",
        "url":"#advanced"
      }
    ]
  },
  "hello": {
    "label":"Hello",
    "url":"#hello"
  } …