如何在firebase中插入我的所有类别的名称？

categories
  - category1: "Category 1"
  - category2: "Category 2"
  - category3: "Category 3"

const db = firebase.database();
const categoriesRef = db.ref('categories');

const categories = {
  category1: "Category 1",
  category2: "Category 2",
  category3: "Category 3"
};

categoriesRef.set(categories)
  .then(() => {
    console.log("Categories inserted successfully");
  })
  .catch((error) => {
    console.error("Error inserting categories:", error);
  });