Firebase - Cloud Firestore - get data.html

<button onclick="getData()">get</button>

<script>
  function getData() {
    const docs = db.collection("to-do-list").doc("to-do");

    docs
      .get()
      .then(doc => {
        if (doc.exists) {
          console.log(doc.data());
        } else {
          console.log("找不到文件");
        }
      })
      .catch(error => {
        console.log("提取文件時出錯:", error);
      });
  }
</script>