diff --git a/js/sub1.js b/js/sub1.js
new file mode 100644
index 0000000..a7c1031
--- /dev/null
+++ b/js/sub1.js
@@ -0,0 +1,131 @@
+const pagination = {
+	currentPage: 1,
+	startIndex: 0,
+	lastIndex: 8,
+	lastPage: 0,
+	limit: 8,
+};
+let renderType = "album";
+
+const url = "xml/nihList.xml";
+
+const result = fetch(url)
+.then(res => res.text())
+.then(data => new DOMParser().parseFromString(data, "text/xml"))
+.then(xmlData => [...xmlData.querySelectorAll("item")].map(({ children }) => {
+	return [...children].reduce(((item, { tagName, textContent }) => {
+		item[tagName] = textContent;
+
+		return item;
+	}), {});
+}));
+
+const $album = document.querySelector("#album");
+const $pagination = document.querySelector("#pagination");
+
+const render = () => {
+	[...$album.children].forEach(album => album.classList.remove("current-album"));
+
+	const { startIndex, lastIndex } = pagination;
+
+	for(let i = startIndex; i < lastIndex; i++)
+		$album.children[i]?.classList.add("current-album");
+
+	[...$pagination.children].forEach(pagi => pagi.classList.remove("active-pagination"));
+	$pagination.children[pagination.currentPage].classList.add("active-pagination");
+};
+const paginationGenerator = length => {
+	pagination.lastPage = length / pagination.limit;
+
+	const limitDivision = renderType === "album" ? length / 8 : length / 10;
+	const limitSplit = limitDivision.toString().split(".");
+
+	let pageLength = limitDivision;
+
+	if(limitDivision.toString().indexOf(".") > 0) pageLength = Number(limitSplit[0]) + 1;
+
+	pagination.lastPage = pageLength;
+
+	for(let i = 1; i < pageLength + 1; i++) {
+		if(i === 1) $pagination.insertAdjacentHTML("beforeend", `<li class="pagination active-pagination">${i}</li>`);
+		else $pagination.insertAdjacentHTML("beforeend", `<li class="pagination">${i}</li>`);
+	}
+
+	if(length > 1) {
+		$pagination.insertAdjacentHTML("afterbegin", `<button class="pagination-controller left-controller">&lt;</button>`);
+		$pagination.insertAdjacentHTML("beforeend", `<button class="pagination-controller right-controller">&gt;</button>`);
+	};
+};
+const albumRender = () => {
+	result.then(items => {
+		paginationGenerator(items.length);
+
+		[...items].forEach(async item => {
+			const { ccbaMnm1, ccbaKdcd, ccbaCtcd, ccbaAsno } = item;
+
+			const imageUrl = await fetch(`xml/detail/${ccbaKdcd}_${ccbaCtcd}_${ccbaAsno}.xml`)
+			.then(res => res.text())
+			.then(data => new DOMParser().parseFromString(data, "text/xml"))
+			.then(xmlData => xmlData.querySelector("imageUrl").innerHTML);
+
+			$album.insertAdjacentHTML("beforeend", `
+				<div class="album">
+				<img src="xml/nihcImage/${imageUrl}" alt="">
+				<li>${ccbaMnm1}</li>
+				</div>
+				`);
+		});
+
+		const { startIndex, lastIndex } = pagination;
+
+		setTimeout(render, 155);
+	});
+};
+albumRender();
+
+$pagination.addEventListener("click", ({ target }) => {
+	if(target.classList.contains("pagination")) {
+		pagination.currentPage = target.textContent;
+
+		[...target.parentNode.children].forEach(pagi => pagi.classList.remove("active-pagination"));
+		target.classList.add("active-pagination");
+
+		if(target.textContent === "1") {
+			pagination.currentPage = 1;
+			pagination.startIndex = 0;
+			pagination.lastIndex = pagination.limit;
+
+			return render();
+		};
+
+		pagination.currentPage = target.textContent;
+		pagination.startIndex = pagination.currentPage * pagination.limit - pagination.limit;
+		pagination.lastIndex = pagination.currentPage * pagination.limit;
+
+		return render();
+	};
+
+	if(target.classList.contains("left-controller")) {
+		pagination.currentPage -= 1;
+
+		if(pagination.currentPage === 1) pagination.startIndex = 0;
+		else pagination.startIndex = pagination.currentPage * pagination.limit - pagination.limit;
+
+		if(pagination.currentPage <= 0) return pagination.currentPage = 1;
+
+		pagination.lastIndex = pagination.startIndex + pagination.limit;
+
+		return render();
+	};
+
+	if(target.classList.contains("right-controller")) {
+		pagination.currentPage = Number(pagination.currentPage) + 1;
+
+		if(pagination.currentPage > pagination.lastPage) return pagination.currentPage = pagination.lastPage;
+
+		pagination.startIndex = pagination.lastIndex;
+		pagination.lastIndex = pagination.startIndex + pagination.limit;
+
+		return render();
+	};
+});
\ No newline at end of file
diff --git a/js/sub4.js b/js/sub4.js
new file mode 100644
index 0000000..c657bfe
--- /dev/null
+++ b/js/sub4.js
@@ -0,0 +1,67 @@
+const url = "restAPI/phone.php";
+
+const result = fetch(url)
+.then(res => res.json())
+.then(data => {
+	if(data.statusCd !== "200") {
+		alert("조회에 실패했습니다");
+
+		return location.href = "index.html";
+	};
+
+	return [...data.items].reduce(((item, { sn, deptNm, name, telNo }) => {
+		item[deptNm] = [...item[deptNm] || [], {sn, name, telNo}]
+
+		return item;
+	}), {});
+});
+
+const $tabBox = document.querySelector("#tab-box");
+const $phoneBox = document.querySelector("#phone-box");
+
+result.then(items => {
+	const tabs = Object.keys(items);
+
+	tabs.forEach(tab => {
+		$tabBox.insertAdjacentHTML("beforeend", `<li class="tab">${tab}</li>`);
+
+		$phoneBox.insertAdjacentHTML("beforeend", `
+			<div class="phone-box" data-tab="${tab}">
+				<div class="phone-header">
+					<h1>${tab}</h1>
+					<hr>
+				</div>
+				<div class="phone-body"></div>
+			</div>
+		`);
+
+		items[tab].forEach(item => {
+			const $phone = [...$phoneBox.children].filter(element => element.dataset.tab === tab)[0];
+			$phone.children[1].insertAdjacentHTML("beforeend", `
+				<div class="phone">
+					<li>${item["name"]}</li>
+					<li>${item["telNo"]}</li>
+				</div>
+			`);
+		});
+	});
+});
+
+$tabBox.addEventListener("click", ({ target }) => {
+	if(!target.classList.contains("tab")) return false;
+
+	const tabs = [...target.parentNode.children];
+	const index = tabs.findIndex(element => element === target);
+
+	tabs.forEach(element => element.classList.remove("active-tab"));
+	tabs[index].classList.add("active-tab");
+
+	if(target.getAttribute("name") === "all") {
+		return [...$phoneBox.children].forEach(element => element.style.display = "flex");			
+	};
+
+	const $phone = [...$phoneBox.children].filter(element => element.dataset.tab === tabs[index].textContent)[0];
+	[...$phoneBox.children].forEach(element => element.style.display = "none");
+
+	$phone.style.display = "flex";
+});
\ No newline at end of file