.

client/src/Components/Login.js

@@ -21,7 +21,7 @@ function Login() {
 
     useEffect(() => { //참거짓 판단 값들의 원소들이 element로 들어간다 
         const isUser = Object.values(user).every(el => Boolean(el))
-        isUser ? setDisabled(false) : setDisabled(true)
+        isUser ? setDisabled(false) : setDisabled(true) 
     }, [user])
 
     function handleChange(event) {
@@ -33,10 +33,10 @@ function Login() {
         event.preventDefault() //리셋을 막는다
         try {
             setLoading(true)
-            setError('')
+            setError('') //값을 배열로 설정
             const response = await axios.post('/api/auth/login', user)
             console.log(response.data)
-            handleLogin(response.data.userId)
+            handleLogin(response.data.userId)//로그인했을때 userid data를 넣는다
             setSuccess(true)
         } catch (error) {
             catchErrors(error, setError)

client/src/Search.js

@@ -11,7 +11,7 @@ import axios from "axios";
 const INIT_PAGE = {
     title: '',
     url: '',
-}
+} //초기페이지에 타이틀이랑 url 저장
 
 function Search(props) {
     const endPage = 10;

server/utils/connectDb.js

@@ -7,7 +7,7 @@ async function connectDb() {
     if (connection.isConnected) {
         return
     }
-
+//디비연결
     const db = await mongoose.connect(config.mongoDbUri, {
         useNewUrlParser: true,
         useUnifiedTopology: true,