login.css
* {
padding: 0;
margin: 0;
font-family: "Microsoft Yahei";
}
html,
body {
width: 100%;
height: 100%;
font-family: "Microsoft Yahei";
display: flex;
justify-content: center;
align-items: center;
}
body {
background: linear-gradient(-135deg, #51D15B, #42A855);
background: -moz-linear-gradient(-135deg, #51D15B, #42A855);
background: -webkit-linear-gradient(-135deg, #51D15B, #42A855);
background: -o-linear-gradient(-135deg, #51D15B, #42A855);
}
.flex-box {
display: flex;
justify-content: center;
align-items: center;
}
.box-width {
width: 80%;
}
/*最外层*/
.login-box {
width: 20%;
min-width: 304px;
max-width: 404px;
height: 50%;
min-height: 368px;
max-height: 468px;
flex-direction: column;
box-shadow: 1px 1px 15px #7B8C99;
background: #fff;
}
/*LOGIN标题*/
.sign-title {
color: #42A855;
border: 2px solid #42A855;
border-top: transparent;
border-left: transparent;
border-right: transparent;
}
/*图片切换*/
.picture-carousel {
position: relative;
display: flex;
margin: 10%;
}
/*图片切换箭头*/
.arrow {
z-index: 3;
position: absolute;
font-size: 60px;
height: 100%;
width: 30%;
display: flex;
justify-content: center;
align-items: center;
color: #ffffff;
}
.arrow:hover {
cursor: pointer;
}
.left-arrow {
left: 0;
}
.before-arrow {
width: 0px;
height: 0px;
border-width: 30px;
border-style: solid;
border-color: transparent #51D15B transparent transparent;
}
.right-arrow {
right: 0;
}
.after-arrow{
width: 0px;
height: 0px;
border-width: 30px;
border-style: solid;
border-color: transparent transparent transparent #51D15B;
}
.picture-carousel img {
width: 80px;
height: 80px;
transition: all 0.2s linear;
-moz-transition: all 0.2s ease-out;
-webkit-transition: all 0.2s ease-out;
-o-transition: all 0.2s ease-out;
}
.img-setting {
margin: 0px -15px;
}
.p1 {
transform: scale(0.6);
z-index: 1;
}
.p1:hover {
transform: scale(0.8);
}
.p2 {
transform: scale(0.8);
z-index: 2;
}
.p2:hover {
transform: scale(1);
}
.p3 {
transform: scale(1);
z-index: 3;
}
.p3:hover {
transform: scale(1.2);
}
/*用户名*/
.name-box {
display: flex;
justify-content: center;
border: 1px solid #51D15B;
}
.name-box .user-name {
width: 100%;
text-align: center;
padding: 10px;
outline-color: #42A855;
border: none;
font-size: 16px;
}
/* 登录按钮 */
.button-box{
display: flex;
justify-content: center;
margin: 10px 0 20px;
}
.button-box .login-button{
width: 100%;
padding: 10px 20px;
outline:none;
border: none;
background: #42A855;
color: white;
font-size: 16px;
}
/* 错误信息 */
.error-box{
color: #42A855;
border: 2px solid #42A855;
border-top: transparent;
border-left: transparent;
border-right: transparent;
}
.error-box span{
visibility: hidden;
color: #d43f3a;
font-size: 14px;
}login.js
// 用于存储图片顺序
var imgArray = ["1","2","3","4","5"];
// 获取箭头
var leftArrow = document.getElementsByClassName("left-arrow")[0];
var rightArrow = document.getElementsByClassName("right-arrow")[0];
// 获取用户名
var userName = document.getElementsByClassName("user-name")[0];
// 获取登录按钮
var loginButton = document.getElementsByClassName("login-button")[0];
// 获取错误信息栏
var errorMessage = document.getElementsByClassName("error-message")[0];
// 添加左箭头监听事件
leftArrow.addEventListener("click",function(){
imgArray.unshift(imgArray[imgArray.length - 1]); // 向数组的开头添加一个元素 //
imgArray.pop(); // 删除并返回数组的最后一个元素
carouselImg(); // 切换图片
});
// 添加右箭头监听事件
rightArrow.addEventListener("click",function(){
imgArray.push(imgArray[0]); // 把第一个元素放在最后
imgArray.shift(); // 删除并返回数组的第一个元素
carouselImg(); // 切换图片
});
// 切换图片
function carouselImg(){
for(var count = 0;count < imgArray.length;count++){
document.getElementsByTagName("img")[count].src = "./img/" + imgArray[count] + ".jpg";
document.getElementsByTagName("img")[count].alt=imgArray[count] + ".jpg";
}
}
// 添加登录按钮监听事件
loginButton.addEventListener("click",function(){
if(userName.value === ""){
errorMessage.innerHTML = "Please Type You Name";
errorMessage.style.visibility = "visible";
}else if(userName.value.length > 8){
errorMessage.innerHTML = "Your Name Cannot Over 8 Words";
errorMessage.style.visibility = "visible";
}else{
window.location.href=encodeURI("index.html?selectpicture=" + document.getElementsByClassName("p3")[0].alt +
"&username=" + userName.value);
}
});
// Enter按键绑定登录事件
document.onkeydown = function (event) {
var e = event || window.event;
if(e && e.keyCode === 13){
loginButton.click();
}
};index.html
chat-room
index.css
*{
margin: 0;
padding: 0;
font-family: "Microsoft Yahei"
}
html,body{
width: 100%;
height: 100%;
}
/* 背景色 */
body{
display: flex;
justify-content: center;
align-items: center;
background: linear-gradient(-135deg,#51D15B,#42A855);
background: -moz-linear-gradient(-135deg,#51D15B,#42A855);
background: -webkit-linear-gradient(-135deg,#51D15B,#42A855);
background: -o-linear-gradient(-135deg,#51D15B,#42A855);
}
/* 最外层 */
.chat-box{
width: 50%;
max-width: 720px;
min-width: 400px;
height: 80%;
min-height: 530px;
max-height: 530px;
display: flex;
flex-direction: column;
background: #fff;
box-shadow: 1px 1px 15px #333;
}
/* 头部 */
.chat-header{
margin: 5px;
box-shadow: 1px 1px 15px #7B8C99;
}
.button-box{
display: flex;
justify-content: flex-end;
}
.log-out{
height: 100%;
font-size: 14px;
font-weight: bold;
padding: 5px 15px;
color: #79C2EA;
background: #fff;
outline: none;
border: none;
border-radius: 15px;
cursor: pointer;
}
/* 主体 */
.chat-body{
height: 90%;
display: flex;
flex-direction: row;
justify-content: space-around;
align-items: center;
margin: 5px;
padding: 5px;
}
/* 主体左侧 */
.chat-body-left{
height: 100%;
width: 70%;
display: flex;
flex-direction: column;
justify-content: space-around;
margin: 5px;
}
/* 左侧内容 */
.chat-content{
box-shadow: 1px 1px 15px #7B8C99;
height: 100%;
margin-bottom: 5px;
overflow: scroll;
}
/*聊天气泡*/
.my-message-box {
display: flex;
justify-content: flex-end;
align-content: center;
margin: 5px;
}
.other-message-box {
display: flex;
justify-content: flex-start;
align-content: center;
margin: 5px;
}
.message-content {
display: flex;
justify-content: center;
align-content: center;
background-color: #51D15B;
padding:5px 10px;
border-radius: 15px;
color: #fff;
}
.other-message-content{
display: flex;
justify-content: center;
align-content: center;
background-color: #79C2EA;
padding: 5px 10px;
border-radius: 15px;
color: #fff;
}
.message-content span{
padding:20px 0px;
}
.user-chat-img {
width: 50px;
height: 50px;
}
.other-message-content span{
padding: 20px 0px;
}
.message-arrow{
width: 0;
height: 0;
border-width:8px;
border-style: solid;
border-color: transparent transparent transparent #51D15B;
align-self: center;
}
.other-message-arrow{
width: 0;
height: 0;
border-width: 8px;
border-style: solid;
border-color: transparent #79C2EA transparent transparent;
align-self: center;
}
.user-information{
display: flex;
flex-direction: column;
align-content: flex-end;
}
.other-user-information{
display: flex;
flex-direction: column;
align-content: flex-end;
}
.user-chat-name{
color: #333;
font-size: 16px;
text-align: center;
}
/* 聊天输入框 */
.chat-edit{
margin-top: 5px;
display: flex;
justify-content: space-between;
align-items: center;
box-shadow: 1px 1px 15px #7B8C99;
overflow: hidden;
}
/* 聊天输入框输入区域 */
.edit-box{
width: 80%;
height: 100%;
margin: 5px;
border: none;
outline: none;
}
/* 聊天输入框按钮 */
.edit-button{
height: 100%;
padding: 5px 15px;
background: #fff;
color: #79C2EA;
outline: none;
border: none;
border-radius: 15px;
cursor: pointer;
font-size: 14px;
font-weight: bold;
}
/* 主体右侧 */
.chat-body-right{
height: 100%;
width: 30%;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
margin: 5px;
box-shadow: 1px 1px 15px #7B8C99;
}
.user-name{
margin: 15px;
font-size: 18px;
font-weight: bold;
color: #79C2EA;
}
.user-img{
width: 100px;
height: 100px;
margin: 5px;
}
.online-count{
font-size: 18px;
font-weight: bold;
color: #79C2EA;
}
/* 兼容小屏幕 */
@media screen and (max-width:420px){
.chat-box{
width: 50%;
max-width: 720px;
min-width: 300px;
height: 80%;
min-height: 530px;
max-height: 530px;
}
.chat-body-left{
height: 100%;
width: 100%;
display: flex;
flex-direction: column;
justify-content: space-around;
margin: 5px;
}
.chat-body-right{
display: none;
}
}index.js
// 获取url里面的内容
var url = decodeURI(location.href).split("?")[1].split("&"); //..数组第一个元素为图片路径，第二个元素为用户名
console.log(url);
// 获取聊天内容框
var chatContent = document.getElementsByClassName("chat-content")[0];
// 获取聊天输入框
var editBox = document.getElementsByClassName("edit-box")[0];
// 获取聊天输入框发送按钮
var editButton = document.getElementsByClassName("edit-button")[0];
// 获取用户名栏
var userName = document.getElementsByClassName("user-name")[0];
// 获取在线人数栏
var onlineCount = document.getElementsByClassName("online-count")[0];
// 登录页面的名称放在右侧
userName.innerHTML = url[1].split("=")[1];
var userImg = document.getElementsByClassName("user-img")[0];
// 把登录页面的头像放在右侧
userImg.src = `./img/${url[0].split("=")[1]}`;
var logOut = document.getElementsByClassName("log-out")[0];
// 发送按钮绑定点击事件
editButton.addEventListener("click",sendMessage);
// 登出按钮绑定点击事件
logOut.addEventListener("click",closePage);
// 绑定Enter键和发送事件
document.onkeydown = function(event){
var e = event || window.event;
if(e && e.keyCode === 13){
if(editBox.value !== ""){
editButton.click();
}
}
};
// 关闭页面
function closePage(){
var userAgent = navigator.userAgent;
console.log(`userAgent=${userAgent}`);
if(userAgent.indexOf("Firefox") != -1 || userAgent.indexOf("Chrome") != -1){ //..如果是火狐或者谷歌
window.location.href = "about:blank";
}else{
window.opener = null;
window.open("","_self");
window.close();
}
}
// socket部分
var socket = io();
// 当接收到消息并且不是本机时生成聊天气泡
socket.on("message",function(information){
console.log("收到消息",information);
if(information.name !== userName.textContent){ // 不是本机时
createOtherMessage(information); // 生成聊天气泡
}
});
// 当接收到有人连接进来
socket.on("connected",function(onlinecount){
console.log(`有人登录，在线人数为：${onlinecount}`);
onlineCount.innerHTML = "Online:" + onlinecount;
});
// 当接收到有人断开后
socket.on("disconnected",function(onlinecount){
console.log(`有人断开啦：当前人数为：${onlinecount}`);
onlineCount.innerHTML = "Online:" +onlinecount;
});
// 发送本机的消息
function sendMessage(){
if(editBox.value != ""){ //..如果发送内容不为空
var myInformation = {
name :userName.textContent,
chatContent : editBox.value,
img : userImg.src
};
socket.emit("message",myInformation);
createMyMessage(); // 创建本机聊天气泡
editBox.value = ""; //..清空文本框
}
}
// 生成本机的聊天气泡
function createMyMessage(){
var myMessageBox = document.createElement("div");
myMessageBox.className = "my-message-box";
var messageContent = document.createElement("div");
messageContent.className = "message-content";
var text = document.createElement("span");
text.innerHTML = editBox.value;
messageContent.appendChild(text);
myMessageBox.appendChild(messageContent);
var arrow = document.createElement("div");
arrow.className = "message-arrow";
myMessageBox.appendChild(arrow);
var userInformation = document.createElement("div");
userInformation.className = "user-information";
var userChatImg = document.createElement("img");
userChatImg.className = "user-chat-img";
userChatImg.src = userImg.src;
var userChatName = document.createElement("div");
userChatName.className = "user-chat-name";
userChatName.innerHTML= userName.textContent;
userInformation.appendChild(userChatImg);
userInformation.appendChild(userChatName);
myMessageBox.appendChild(userInformation);
chatContent.appendChild(myMessageBox);
chatContent.scrollTop = chatContent.scrollHeight; // 滚动到最新聊天内容
}
// 生成其他用户的聊天气泡
function createOtherMessage(information) {
var otherMessageBox = document.createElement("div");
otherMessageBox.className = "other-message-box";
var otherUserInformation = document.createElement("div");
otherUserInformation.className = "other-user-information";
var userChatImg = document.createElement("img");
userChatImg.className = "user-chat-img";
userChatImg.src = information.img;
var userChatName = document.createElement("span");
userChatName.className = "user-chat-name";
userChatName.innerHTML = information.name;
otherUserInformation.appendChild(userChatImg);
otherUserInformation.appendChild(userChatName);
otherMessageBox.appendChild(otherUserInformation);
var otherMessageArrow = document.createElement("div");
otherMessageArrow.className = "other-message-arrow";
otherMessageBox.appendChild(otherMessageArrow);
var otherMessageContent = document.createElement("div");
otherMessageContent.className = "other-message-content";
var text = document.createElement("span");
text.innerHTML = information.chatContent;
otherMessageContent.appendChild(text);
otherMessageBox.appendChild(otherMessageContent);
chatContent.appendChild(otherMessageBox);
chatContent.scrollTop = chatContent.scrollHeight;
}server.js
// 引入必须模棱
var express = require("express");
var app = express();
var http = require("http").Server(app);
var io = require("socket.io")(http);
var path = require("path");
// 在线人数统计
var onlineCount = 0;
app.use(express.static(__dirname));
// 路径映射
app.get("/login.html",function(request,response){
response.sendFile("login.html");
});
// 当有用户连接进来时
io.on("connection",function(socket){
console.log("a user connected");
// 发送给客户端在线人数
io.emit("connected",++onlineCount);
// 当有用户断开
socket.on("disconnect",function(){
console.log("user disconnected");
// 发送给客户端人数
io.emit("disconnected",--onlineCount);
console.log(onlineCount);
});
// 收到了客户端发来的消息
socket.on("message",function(message){
// 给客户端发送消息
console.log("服务器收到的消息为：",message);
io.emit("message",message);
});
});
var server = http.listen(4000,function(){
console.log("Server is running");
});最后
终端输入
node server.js
浏览器地址栏输入
http://localhost:4000/login.html
读到这里，这篇“Node.js+express+socket怎么实现在线实时多人聊天室”文章已经介绍完毕，想要掌握这篇文章的知识点还需要大家自己动手实践使用过才能领会，如果想了解更多相关内容的文章，欢迎关注创新互联行业资讯频道。
网页名称：Node.js+express+socket怎么实现在线实时多人聊天室
文章来源：http://ybzwz.com/article/jhcpso.html
