搭建基礎的HTML結構和樣式框架

頁面居中布局
為了讓整個應用在頁面中居中顯示,我們對 html 和 body 元素進行了如下設置:通過Flex布局,實現了水平和垂直居中,同時設置了背景色為灰色,模擬桌面應用程序的環境。
html,body {
height: 100%;
display: flex;
align-items: center;
justify-content: center;
background: #d9d9d9;
margin: 0 auto;
}
主容器設計
.container 類定義了應用的主容器,這個容器具有以下特點:
- 固定尺寸:910x640像素(微信桌面版的大致尺寸)
- 白色背景,與灰色頁面背景形成對比
- 添加了陰影效果,增強立體感
- 使用Flex布局,便于內部組件排列
- 圓角設計,提升視覺效果
.container {
width: 910px;
height: 640px;
background-color: #fff;
box-shadow: 0 0 10px rgba(0,0,0,0.1);
display: flex;
border-radius: 4px;
position: relative;
}
添加側邊功能欄

引入圖標庫
首先,我們在 中引入了 Font Awesome 圖標庫,這將為我們提供豐富的圖標資源,用于美化界面元素。
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css"/>
新增側邊欄結構
在 .container 中,添加功能區(sidebar)。它包含四個圖標,分別代表:聊天會話(fa-comments)、群聊/聯系人(fa-user-group)、文件管理(fa-folder)、設置(fa-gear)。
<div class="sidebar">
<div class="sidebar-item active"><i class="fa-solid fa-comments"></i></div>
<div class="sidebar-item"><i class="fa-solid fa-user-group"></i></div>
<div class="sidebar-item"><i class="fa-solid fa-folder"></i></div>
<div class="sidebar-item"><i class="fa-solid fa-gear"></i></div>
</div>
側邊欄樣式設計
側邊欄整體樣式:寬度為60px,深灰色背景(#2e2e2e),使用Flex布局實現垂直排列,并通過 padding-top 在頂部留出20px的間距。
.sidebar {
width: 60px;
background-color: #2e2e2e;
display: flex;
flex-direction: column;
align-items: center;
padding-top: 20px;
}
功能項樣式:每個功能項都是40x40像素的正方形,具有淺灰色背景(#3a3a3a)、圓角設計、居中顯示圖標、鼠標懸停時顯示手型光標、添加了背景色過渡動畫效果、圖標為白色、大小20px。
.sidebar-item {
width: 40px;
height: 40px;
margin-bottom: 20px;
background-color: #3a3a3a;
border-radius: 4px;
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
transition: background-color 0.3s;
color: #fff;
font-size: 20px;
}
交互效果:鼠標懸停時,背景色變為更淺的灰色(#4a4a4a);當前激活項(active類)背景色為微信標志性的綠色(#07c160)
.sidebar-item:hover {
background-color: #4a4a4a;
}
.sidebar-item.active {
background-color: #07c160;
}
實現會話列表區域

新增會話列表結構
在 .container 中添加了會話列表區域,包含兩個主要部分:頂部搜索框區域(.chat-list-header)、聊天會話項列表(多個 .chat-item)。
<div class="chat-list">
<div class="chat-list-header">
<div class="search-box">
<input type="text" placeholder="搜索">
</div>
</div>
<div class="chat-item active">
<div class="avatar">A</div>
<div class="chat-info">
<div class="chat-name">Alice</div>
<div class="chat-preview">你好,最近怎么樣?</div>
</div>
</div>
</div>
會話列表樣式設計
會話列表容器:寬度為240px,淺灰色背景(#f5f5f5),右側添加了分隔線,使用Flex布局實現垂直排列。
.chat-list {
width: 240px;
background-color: #f5f5f5;
border-right: 1px solid #e0e0e0;
display: flex;
flex-direction: column;
}
搜索框區域:高60px,包含一個輸入框用于搜索會話。輸入框去除了默認邊框和輪廓,提供簡潔的搜索體驗。
.chat-list-header {
height: 60px;
background-color: #f5f5f5;
padding: 10px;
display: flex;
align-items: center;
justify-content: space-between;
border-bottom: 1px solid #e0e0e0;
}
.search-box {
flex: 1;
height: 35px;
background-color: #fff;
border-radius: 4px;
display: flex;
align-items: center;
padding: 0 10px;
border: 1px solid #e0e0e0;
}
.search-box input {
border: none;
outline: none;
flex: 1;
font-size: 14px;
}
聊天會話項:每個聊天項高70px,包含頭像和聊天信息。交互效果:鼠標懸停時背景色變淺、激活項具有更深的背景色。
.chat-item {
height: 70px;
padding: 10px;
display: flex;
align-items: center;
cursor: pointer;
border-bottom: 1px solid #e0e0e0;
transition: background-color 0.3s;
}
.chat-item:hover {
background-color: #e8e8e8;
}
.chat-item.active {
background-color: #e0e0e0;
}
頭像和信息展示:頭像使用綠色背景和白色粗體字母,模擬用戶頭像;聊天信息區域包含聯系人姓名和最新消息預覽,消息預覽具有文本截斷效果。
.avatar {
width: 45px;
height: 45px;
background-color: #07c160;
border-radius: 4px;
margin-right: 10px;
display: flex;
align-items: center;
justify-content: center;
color: #fff;
font-weight: bold;
}
.chat-info {
flex: 1;
overflow: hidden;
}
.chat-name {
font-size: 14px;
font-weight: bold;
margin-bottom: 4px;
color: #333;
}
.chat-preview {
font-size: 14px;
color: #999;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
實現聊天主區域

新增聊天主區域結構
在 .container 中添加了聊天主區域,包含三個部分:
- 聊天頭部(.chat-header)- 顯示當前聊天對象名稱
- 消息顯示區域(.chat-messages)- 顯示聊天記錄
- 消息輸入區域(.chat-input)- 用戶輸入和發送消息
<div class="chat-area">
<div class="chat-header">
<div class="chat-title">Alice</div>
<div class="chat-actions">
<i class="fa-solid fa-ellipsis-h action-btn"></i>
</div>
</div>
<div class="chat-messages">
<div class="message received">
<div class="avatar">A</div>
<div class="message-bubble">你好,最近怎么樣?</div>
</div>
</div>
<div class="chat-input">
<div class="input-tools">
<i class="fa-regular fa-face-smile tool-btn"></i>
<i class="fa-solid fa-paperclip tool-btn"></i>
<i class="fa-solid fa-image tool-btn"></i>
</div>
<div class="input-box">
<textarea placeholder="輸入消息..."></textarea>
<button class="send-btn">發送</button>
</div>
</div>
</div>
聊天主區域樣式設計
聊天區域容器:占據了剩余的610px寬度,使用Flex布局實現垂直排列。
.chat-area {
width: 610px;
display: flex;
flex-direction: column;
}
聊天頭部:高60px,顯示當前聊天對象名稱,右側包含操作按鈕(目前只有一個省略號按鈕);按鈕具有懸停效果,顏色會變為微信綠。
.chat-header {
height: 60px;
background-color: #f5f5f5;
border-bottom: 1px solid #e0e0e0;
display: flex;
align-items: center;
justify-content: space-between;
padding: 0 20px;
}
.chat-title {
font-size: 16px;
font-weight: bold;
color: #333;
}
.chat-actions {
display: flex;
gap: 15px;
}
.action-btn {
cursor: pointer;
color: #666;
font-size: 18px;
transition: color 0.3s;
}
.action-btn:hover {
color: #07c160;
}
消息顯示區域:使用滾動條處理大量消息;接收消息(.received)左對齊,使用白色氣泡;發送消息(.sent)右對齊,使用綠色氣泡(#95ec69);消息氣泡最大寬度為60%,避免過寬。
.chat-messages {
flex: 1;
padding: 20px;
overflow-y: auto;
background-color: #f5f5f5;
}
.message {
margin-bottom: 15px;
display: flex;
align-items: flex-start;
}
.message.sent {
justify-content: flex-end;
}
.message-bubble {
max-width: 60%;
padding: 10px 15px;
border-radius: 4px;
font-size: 14px;
line-height: 1.5;
}
.message.received .message-bubble {
background-color: #fff;
margin-left: 10px;
}
.message.sent .message-bubble {
background-color: #95ec69;
margin-right: 10px;
}
消息輸入區域包含:
- 工具按鈕:表情、附件、圖片等(目前僅添加圖標)
- 文本輸入框:多行文本域,支持換行輸入
- 發送按鈕:綠色按鈕,具有懸停效果
.chat-input {
height: 120px;
background-color: #fff;
border-top: 1px solid #e0e0e0;
padding: 10px;
display: flex;
flex-direction: column;
}
.input-tools {
height: 30px;
display: flex;
align-items: center;
gap: 10px;
margin-bottom: 10px;
}
.tool-btn {
cursor: pointer;
color: #666;
font-size: 18px;
transition: .3s;
}
.tool-btn:hover {
color: #07c160;
}
.input-box {
flex: 1;
display: flex;
gap: 10px;
}
.input-box textarea {
flex: 1;
border: none;
outline: none;
resize: none;
font-size: 14px;
padding: 5px;
}
.send-btn {
width: 80px;
height: 30px;
background-color: #07c160;
color: #fff;
border: none;
border-radius: 4px;
cursor: pointer;
align-self: flex-end;
transition: background-color 0.3s;
}
.send-btn:hover {
background-color: #06a050;
}
添加基礎交互功能
新增JavaScript交互代碼
document.querySelector('.send-btn').addEventListener('click', function() {
const textarea = document.querySelector('.input-box textarea');
const message = textarea.value.trim();
if (message) {
const messagesContainer = document.querySelector('.chat-messages');
const newMessage = document.createElement('div');
newMessage.className = 'message sent';
newMessage.innerHTML = `<div class="message-bubble">${message}</div>`;
messagesContainer.appendChild(newMessage);
textarea.value = '';
messagesContainer.scrollTop = messagesContainer.scrollHeight;
}
});
document.querySelector('.input-box textarea').addEventListener('keypress', function(e) {
if (e.key === 'Enter' && !e.shiftKey) {
e.preventDefault();
document.querySelector('.send-btn').click();
}
});
功能實現解析
發送按鈕點擊事件:為發送按鈕(.send-btn)添加了點擊事件監聽器,當用戶點擊發送按鈕時會觸發消息發送邏輯。
document.querySelector('.send-btn').addEventListener('click', function() {
});
消息發送處理邏輯:首先獲取輸入框中的文本內容,并去除首尾空白字符。只有當消息內容不為空時才進行后續處理。
const textarea = document.querySelector('.input-box textarea');
const message = textarea.value.trim();
if (message) {
}
創建并添加新消息:當有有效消息時,獲取消息顯示區域(.chat-messages),創建新的消息元素,并設置類名為 message sent(表示發送的消息),設置消息內容為用戶輸入的文本,將新消息添加到消息顯示區域。
const messagesContainer = document.querySelector('.chat-messages');
const newMessage = document.createElement('div');
newMessage.className = 'message sent';
newMessage.innerHTML = `<div class="message-bubble">${message}</div>`;
messagesContainer.appendChild(newMessage);
清空輸入框并滾動到最新消息,確保最新消息可見。
textarea.value = '';
messagesContainer.scrollTop = messagesContainer.scrollHeight;
回車發送消息功能:為文本輸入框添加了鍵盤事件監聽器,當用戶按下回車鍵(但不按Shift鍵)時阻止默認行為(避免在文本框中插入換行符),觸發發送按鈕的點擊事件,實現快速發送消息。
完整代碼
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>仿微信桌面聊天界面</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css"/>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html,body {
height: 100%;
display: flex;
align-items: center;
justify-content: center;
background: #d9d9d9;
margin: 0 auto;
}
.container {
width: 910px;
height: 640px;
background-color: #fff;
box-shadow: 0 0 10px rgba(0,0,0,0.1);
display: flex;
border-radius: 4px;
position: relative;
}
.sidebar {
width: 60px;
background-color: #2e2e2e;
display: flex;
flex-direction: column;
align-items: center;
padding-top: 20px;
}
.sidebar-item {
width: 40px;
height: 40px;
margin-bottom: 20px;
background-color: #3a3a3a;
border-radius: 4px;
display: flex;
align-items: center;
justify-content: center;
cursor: pointer;
transition: background-color 0.3s;
color: #fff;
font-size: 20px;
}
.sidebar-item:hover {
background-color: #4a4a4a;
}
.sidebar-item.active {
background-color: #07c160;
}
.chat-list {
width: 240px;
background-color: #f5f5f5;
border-right: 1px solid #e0e0e0;
display: flex;
flex-direction: column;
}
.chat-list-header {
height: 60px;
background-color: #f5f5f5;
padding: 10px;
display: flex;
align-items: center;
justify-content: space-between;
border-bottom: 1px solid #e0e0e0;
}
.search-box {
flex: 1;
height: 35px;
background-color: #fff;
border-radius: 4px;
display: flex;
align-items: center;
padding: 0 10px;
border: 1px solid #e0e0e0;
}
.search-box input {
border: none;
outline: none;
flex: 1;
font-size: 14px;
}
.chat-item {
height: 70px;
padding: 10px;
display: flex;
align-items: center;
cursor: pointer;
border-bottom: 1px solid #e0e0e0;
transition: background-color 0.3s;
}
.chat-item:hover {
background-color: #e8e8e8;
}
.chat-item.active {
background-color: #e0e0e0;
}
.avatar {
width: 45px;
height: 45px;
background-color: #07c160;
border-radius: 4px;
margin-right: 10px;
display: flex;
align-items: center;
justify-content: center;
color: #fff;
font-weight: bold;
}
.chat-info {
flex: 1;
overflow: hidden;
}
.chat-name {
font-size: 14px;
font-weight: bold;
margin-bottom: 4px;
color: #333;
}
.chat-preview {
font-size: 14px;
color: #999;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.chat-area {
width: 610px;
display: flex;
flex-direction: column;
}
.chat-header {
height: 60px;
background-color: #f5f5f5;
border-bottom: 1px solid #e0e0e0;
display: flex;
align-items: center;
justify-content: space-between;
padding: 0 20px;
}
.chat-title {
font-size: 16px;
font-weight: bold;
color: #333;
}
.chat-actions {
display: flex;
gap: 15px;
}
.action-btn {
cursor: pointer;
color: #666;
font-size: 18px;
transition: color 0.3s;
}
.action-btn:hover {
color: #07c160;
}
.chat-messages {
flex: 1;
padding: 20px;
overflow-y: auto;
background-color: #f5f5f5;
}
.message {
margin-bottom: 15px;
display: flex;
align-items: flex-start;
}
.message.sent {
justify-content: flex-end;
}
.message-bubble {
max-width: 60%;
padding: 10px 15px;
border-radius: 4px;
font-size: 14px;
line-height: 1.5;
}
.message.received .message-bubble {
background-color: #fff;
margin-left: 10px;
}
.message.sent .message-bubble {
background-color: #95ec69;
margin-right: 10px;
}
.chat-input {
height: 120px;
background-color: #fff;
border-top: 1px solid #e0e0e0;
padding: 10px;
display: flex;
flex-direction: column;
}
.input-tools {
height: 30px;
display: flex;
align-items: center;
gap: 10px;
margin-bottom: 10px;
}
.tool-btn {
cursor: pointer;
color: #666;
font-size: 18px;
transition: .3s;
}
.tool-btn:hover {
color: #07c160;
}
.input-box {
flex: 1;
display: flex;
gap: 10px;
}
.input-box textarea {
flex: 1;
border: none;
outline: none;
resize: none;
font-size: 14px;
padding: 5px;
}
.send-btn {
width: 80px;
height: 30px;
background-color: #07c160;
color: #fff;
border: none;
border-radius: 4px;
cursor: pointer;
align-self: flex-end;
transition: background-color 0.3s;
}
.send-btn:hover {
background-color: #06a050;
}
</style>
</head>
<body>
<div class="container">
<div class="sidebar">
<div class="sidebar-item active"><i class="fa-solid fa-comments"></i></div>
<div class="sidebar-item"><i class="fa-solid fa-user-group"></i></div>
<div class="sidebar-item"><i class="fa-solid fa-folder"></i></div>
<div class="sidebar-item"><i class="fa-solid fa-gear"></i></div>
</div>
<div class="chat-list">
<div class="chat-list-header">
<div class="search-box">
<input type="text" placeholder="搜索">
</div>
</div>
<div class="chat-item active">
<div class="avatar">A</div>
<div class="chat-info">
<div class="chat-name">Alice</div>
<div class="chat-preview">你好,最近怎么樣?</div>
</div>
</div>
<div class="chat-item">
<div class="avatar">B</div>
<div class="chat-info">
<div class="chat-name">Bob</div>
<div class="chat-preview">明天見!</div>
</div>
</div>
<div class="chat-item">
<div class="avatar">C</div>
<div class="chat-info">
<div class="chat-name">Carol</div>
<div class="chat-preview">文件已經發給你了</div>
</div>
</div>
</div>
<div class="chat-area">
<div class="chat-header">
<div class="chat-title">Alice</div>
<div class="chat-actions">
<i class="fa-solid fa-ellipsis-h action-btn"></i>
</div>
</div>
<div class="chat-messages">
<div class="message received">
<div class="avatar">A</div>
<div class="message-bubble">你好,最近怎么樣?</div>
</div>
<div class="message sent">
<div class="message-bubble">我很好,謝謝!你呢?</div>
</div>
<div class="message received">
<div class="avatar">A</div>
<div class="message-bubble">我也挺好的,周末有空一起喝咖啡嗎?</div>
</div>
<div class="message sent">
<div class="message-bubble">好啊,周六下午怎么樣?</div>
</div>
</div>
<div class="chat-input">
<div class="input-tools">
<i class="fa-regular fa-face-smile tool-btn"></i>
<i class="fa-solid fa-paperclip tool-btn"></i>
<i class="fa-solid fa-image tool-btn"></i>
</div>
<div class="input-box">
<textarea placeholder="輸入消息..."></textarea>
<button class="send-btn">發送</button>
</div>
</div>
</div>
</div>
</body>
<script>
document.querySelector('.send-btn').addEventListener('click', function() {
const textarea = document.querySelector('.input-box textarea');
const message = textarea.value.trim();
if (message) {
const messagesContainer = document.querySelector('.chat-messages');
const newMessage = document.createElement('div');
newMessage.className = 'message sent';
newMessage.innerHTML = `<div class="message-bubble">${message}</div>`;
messagesContainer.appendChild(newMessage);
textarea.value = '';
messagesContainer.scrollTop = messagesContainer.scrollHeight;
}
});
document.querySelector('.input-box textarea').addEventListener('keypress', function(e) {
if (e.key === 'Enter' && !e.shiftKey) {
e.preventDefault();
document.querySelector('.send-btn').click();
}
});
</script>
</html>
轉自https://juejin.cn/post/7535350468588683318
該文章在 2025/8/8 10:53:28 編輯過