Curiosity is Power: 什麼是JSON格式?

JSON（JavaScript Object Notation）是一種輕量級的語言，以文字為基礎，且易於讓人閱讀。

JSON以key-value的格式儲存資料，並且必須被包在"{"與"}"符號之中。

以訂單內容為範例，JSON與XML不同格式有不同的表示方法：

(範例取自於你不可不知的 JSON 基本介紹 | 小惡魔 - 電腦技術 - 工作筆記 - AppleBOY)

JSON

{

  "orderID": 12345,

  "shopperName": "John Smith",

  "shopperEmail": "johnsmith@example.com",

  "contents": [

    {

      "productID": 34,

      "productName": "SuperWidget",

      "quantity": 1

    },

    {

      "productID": 56,

      "productName": "WonderWidget",

      "quantity": 3

    }

  ],

  "orderCompleted": true

}

XML

<object>

  <property>

    <key>orderID</key>

    <number>12345</number>

  </property>

  <property>

    <key>shopperName</key>

    <string>John Smith</string>

  </property>

  <property>

    <key>shopperEmail</key>

    <string>johnsmith@example.com</string>

  </property>

  <property>

    <key>contents</key>

    <array>

      <object>

        <property>

          <key>productID</key>

          <number>34</number>

        </property>

        <property>

          <key>productName</key>

          <string>SuperWidget</string>

        </property>

        <property>

          <key>quantity</key>

          <number>1</number>

        </property>        

      </object>

      <object>

        <property>

          <key>productID</key>

          <number>56</number>

        </property>

        <property>

          <key>productName</key>

          <string>WonderWidget</string>

        </property>

        <property>

          <key>quantity</key>

          <number>3</number>

        </property> 

      </object>

    </array>

  </property>

  <property>

    <key>orderCompleted</key>

    <boolean>true</boolean>

  </property>  

</object>