diff --git a/src/js/index.js b/src/js/index.js
index e69de29b..7f166e07 100644
--- a/src/js/index.js
+++ b/src/js/index.js
@@ -0,0 +1,80 @@
+const element = (selector) => document.querySelector(selector);
+
+const APP = () => {
+  const updateMenuCount = () => {
+    const menuCount = document.querySelectorAll(".menu-list-item").length;
+    element(".menu-count").textContent = `총 ${menuCount} 개`;
+  };
+
+  const addMenu = () => {
+    const menuName = element("#espresso-menu-name").value.trim();
+
+    if (menuName === "") {
+      alert("메뉴를 입력하세요!");
+      return;
+    }
+
+    element("#espresso-menu-list").insertAdjacentHTML(
+      "beforeend",
+      `<li class="menu-list-item d-flex items-center py-2">
+        <span class="w-100 pl-2 menu-name">${menuName}</span>
+        <button
+          type="button"
+          class="bg-gray-50 text-gray-500 text-sm mr-1 menu-edit-button"
+        >
+          수정
+        </button>
+        <button
+          type="button"
+          class="bg-gray-50 text-gray-500 text-sm menu-remove-button"
+        >
+          삭제
+        </button>
+      </li>`
+    );
+
+    element("#espresso-menu-name").value = "";
+    updateMenuCount();
+  };
+
+  //
+  const editMenu = (event) => {
+    const menuNameElement = event.target
+      .closest("li")
+      .querySelector(".menu-name");
+    const newName = (
+      prompt("메뉴명을 수정하세요.", menuNameElement.textContent) || ""
+    ).trim();
+    if (newName !== "") {
+      menuNameElement.textContent = newName;
+    }
+  };
+
+  const removeMenu = (event) => {
+    const menuElement = event.target.closest("li");
+    const isConfirmed = confirm("정말 삭제하시겠습니까?");
+    if (isConfirmed) {
+      menuElement.remove();
+      updateMenuCount();
+    }
+  };
+
+  // 동적으로 변경?
+  element("#espresso-menu-submit-button").addEventListener("click", addMenu);
+
+  element("#espresso-menu-form").addEventListener("submit", (event) => {
+    event.preventDefault();
+    addMenu();
+  });
+
+  element("#espresso-menu-list").addEventListener("click", (event) => {
+    if (event.target.classList.contains("menu-edit-button")) {
+      editMenu(event);
+    }
+    if (event.target.classList.contains("menu-remove-button")) {
+      removeMenu(event);
+    }
+  });
+};
+
+APP();