⚡️ UserCard: React.memo + <a> instead of <div>

website/components/UserCard/UserCard.css

@@ -0,0 +1,47 @@
+.UserCard {
+  display: flex;
+  align-items: center;
+  position: relative;
+  flex-direction: column;
+  word-wrap: break-word;
+  box-shadow: 0px 0px 6px 6px rgba(0, 0, 0, 0.25);
+  border: 1px solid black;
+  border-radius: 1rem;
+  margin: 0 0 50px 0;
+  cursor: pointer;
+  transition: all 0.3s;
+  padding: 10px;
+}
+.UserCard__container {
+  height: 100%;
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  color: var(--text-color);
+  text-decoration: none !important;
+}
+.UserCard:hover {
+  transform: translateY(-7px);
+}
+/* col-md */
+@media (min-width: 768px) {
+  .UserCard {
+    margin: 0 30px 50px 30px;
+  }
+}
+/* col-xl */
+@media (min-width: 1200px) {
+  .UserCard {
+    margin: 0 20px 50px 20px;
+  }
+}
+.UserCard__logo {
+  width: 150px;
+  height: 150px;
+  border-radius: 50%;
+  object-fit: cover;
+}
+.UserCard__name {
+  margin: 30px 0 10px 0;
+}

website/components/UserCard/UserCard.jsx

@@ -0,0 +1,25 @@
+import Link from 'next/link'
+import { forwardRef, memo } from 'react'
+import { API_URL } from '../../utils/config/config'
+import './UserCard.css'
+
+const UserCard = memo(
+  forwardRef((props, ref) => {
+    return (
+      <div className='UserCard col-sm-24 col-md-10 col-xl-7' ref={ref}>
+        <Link href='/users/[name]' as={`/users/${props.name}`}>
+          <a className='UserCard__container'>
+            <img
+              className='UserCard__logo'
+              src={API_URL + props.logo}
+              alt={props.name}
+            />
+            <h2 className='UserCard__name'>{props.name}</h2>
+          </a>
+        </Link>
+      </div>
+    )
+  })
+)
+
+export default UserCard

website/pages/users/index.jsx

@@ -1,45 +1,52 @@
 import { useState, useEffect, useRef, useCallback } from 'react'
-import Link from 'next/link'
 import HeadTag from '../../components/HeadTag'
 import Loader from '../../components/Loader'
+import UserCard from '../../components/UserCard/UserCard'
 import api from '../../utils/api'
 import '../../public/css/pages/users.css'
-import { API_URL } from '../../utils/config/config'
 
 const Users = () => {
   let pageUsers = 1
 
   const [inputSearch, setInputSearch] = useState('')
-  const [usersData, setUsersData] = useState({ totalItems: 0, hasMore: true, rows: [] })
+  const [usersData, setUsersData] = useState({
+    totalItems: 0,
+    hasMore: true,
+    rows: []
+  })
   const [isLoadingUsers, setLoadingUsers] = useState(true)
 
   // Récupère les users si la recherche change
   useEffect(() => {
     pageUsers = 1
-    getUsersData().then((data) => setUsersData(data))
+    getUsersData().then(data => setUsersData(data))
   }, [inputSearch])
 
   const getUsersData = async () => {
     setLoadingUsers(true)
-    const { data } = await api.get(`/users?page=${pageUsers}&limit=15&search=${inputSearch}`)
+    const { data } = await api.get(
+      `/users?page=${pageUsers}&limit=15&search=${inputSearch}`
+    )
     setLoadingUsers(false)
     return data
   }
 
-  const handleSearchChange = (event) => {
+  const handleSearchChange = event => {
     setInputSearch(event.target.value)
   }
 
   // Permet la pagination au scroll
   const observer = useRef()
-  const lastUserCardRef = useCallback((node) => {
+  const lastUserCardRef = useCallback(
+    node => {
       if (isLoadingUsers) return
       if (observer.current) observer.current.disconnect()
-    observer.current = new window.IntersectionObserver((entries) => {
+      observer.current = new window.IntersectionObserver(
+        entries => {
           if (entries[0].isIntersecting && usersData.hasMore) {
             pageUsers += 1
-        getUsersData().then((data) => {
+            getUsersData().then(data => {
-          setUsersData((oldData) => {
+              setUsersData(oldData => {
                 return {
                   totalItems: data.totalItems,
                   hasMore: data.hasMore,
@@ -48,27 +55,41 @@ const Users = () => {
               })
             })
           }
-    }, { threshold: 1 })
+        },
+        { threshold: 1 }
+      )
       if (node) observer.current.observe(node)
-  }, [isLoadingUsers, usersData.hasMore])
+    },
+    [isLoadingUsers, usersData.hasMore]
+  )
 
   return (
     <>
-      <HeadTag
+      <HeadTag title='Utilisateurs' description='Liste des utilisateurs.' />
-        title='Utilisateurs'
-        description='Liste des utilisateurs.'
-      />
 
       <div className='container text-center'>
         <div className='row justify-content-center'>
           <div className='col-24'>
-            <h1 style={{ marginBottom: 0, paddingTop: '20px' }}>Utilisateurs</h1>
+            <h1 style={{ marginBottom: 0, paddingTop: '20px' }}>
-            <p style={{ marginTop: '5px' }}>La liste des utilisateurs - Total de {usersData.totalItems} utilisateurs :</p>
+              Utilisateurs
+            </h1>
+            <p style={{ marginTop: '5px' }}>
+              La liste des utilisateurs - Total de {usersData.totalItems}{' '}
+              utilisateurs :
+            </p>
           </div>
         </div>
 
         <div className='Users__search-container row justify-content-center'>
-          <input value={inputSearch} onChange={handleSearchChange} type='search' className='Users__form-control Users__search-input' name='search' id='search' placeholder='🔎 Rechercher...' />
+          <input
+            value={inputSearch}
+            onChange={handleSearchChange}
+            type='search'
+            className='Users__form-control Users__search-input'
+            name='search'
+            id='search'
+            placeholder='🔎 Rechercher...'
+          />
         </div>
 
         <div className='row justify-content-center'>
@@ -76,25 +97,11 @@ const Users = () => {
             // Si c'est le dernier élément
             if (usersData.rows.length === index + 1) {
               return (
-                <div ref={lastUserCardRef} key={user.id} className='UserCard col-sm-24 col-md-10 col-xl-7'>
+                <UserCard key={index} {...user} ref={lastUserCardRef} />
-                  <Link href='/users/[name]' as={`/users/${user.name}`}>
-                    <div className='UserCard__container'>
-                      <img className='UserCard__logo' src={API_URL + user.logo} alt={user.name} />
-                      <h2 className='UserCard__name'>{user.name}</h2>
-                    </div>
-                  </Link>
-                </div>
               )
             }
             return (
-              <div key={user.id} className='UserCard col-sm-24 col-md-10 col-xl-7'>
+              <UserCard key={index} {...user} />
-                <Link href='/users/[name]' as={`/users/${user.name}`}>
-                  <div className='UserCard__container'>
-                    <img className='UserCard__logo' src={API_URL + user.logo} alt={user.name} />
-                    <h2 className='UserCard__name'>{user.name}</h2>
-                  </div>
-                </Link>
-              </div>
             )
           })}
         </div>

website/public/css/pages/users.css

@@ -1,7 +1,7 @@
 .Users__form-control {
   display: block;
-    height: calc(1.5em + .75rem + 2px);
+  height: calc(1.5em + 0.75rem + 2px);
-    padding: .375rem .75rem;
+  padding: 0.375rem 0.75rem;
   font-size: 1rem;
   font-weight: 400;
   line-height: 1.5;
@@ -9,7 +9,7 @@
   background-color: #fff;
   background-clip: padding-box;
   border: 1px solid #ced4da;
-    border-radius: .5em;
+  border-radius: 0.5em;
 }
 .Users__search-container {
   margin-bottom: 50px;
@@ -17,49 +17,3 @@
 .Users__search-input {
   width: 50%;
 }
-
-.UserCard {
-    display: flex;
-    align-items: center;
-    position: relative;
-    flex-direction: column;
-    word-wrap: break-word;
-    box-shadow: 0px 0px 6px 6px rgba(0, 0, 0, .25);
-    border: 1px solid black;
-    border-radius: 1rem;
-    margin: 0 0 50px 0;
-    cursor: pointer;
-    transition: all .3s;
-    padding: 10px;
-}
-.UserCard__container {
-    height: 100%;
-    width: 100%;
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-}
-.UserCard:hover {
-    transform: translateY(-7px);
-}
-/* col-md */
-@media (min-width: 768px) {
-    .UserCard {
-        margin: 0 30px 50px 30px;
-    } 
-}
-/* col-xl */
-@media (min-width: 1200px) {
-    .UserCard {
-        margin: 0 20px 50px 20px;
-    }   
-}
-.UserCard__logo {
-    width: 150px;
-    height: 150px;
-    border-radius: 50%;
-    object-fit: cover;
-}
-.UserCard__name {
-    margin: 30px 0 10px 0;
-}