聊天是起打我们人与人交流最直接的方式，互联网的造款加入使我们交流更加便捷。我们手机上的聊天微信、QQ是起打我们手机必不可少的应用软件。那么，造款我们是聊天否可以做一款聊天应用呢?
之前我自己闲着没事，研究过一些技术，起打做了一款即时通讯应用，造款下面我将选取几幅具有代表性的聊天图片供大家参考。
一、起打应用示图
以上是造款这款应用的主要页面，功能可能相对简陋点，聊天不过基本的IT技术网起打功能已经实现了，下面我将给出核心代码，造款全部源码地址在文末。聊天
二、部分核心源码
前台主要核心逻辑：
这里我只列举了js核心代码，查看完整代码可以去文末。
function sock() { return io.connect("http://localhost:3003"); // http环境下 } // 心跳机制 document.addEventListener(visibilitychange, function () { if (document.visibilityState == hidden) { //记录页面隐藏时间 sock() console.log(隐藏了) } }) setInterval(() => { sock() }, 10000); var socket = sock() var re = document.querySelector("#re"); var register1 = document.querySelector(".register"); var init = document.querySelector(".init"); var passr = document.querySelector("#passr"); var passl = document.querySelector("#passl"); var login1 = document.querySelector(".login"); var register_b = document.querySelector("#register_b"); var lo = document.querySelector("#lo"); var chat = document.querySelector("#chat"); var login_b = document.querySelector("#login_b"); var myMes = ""; var vf = ""; var na = ""; var p = ""; var we = ""; var div = ""; var v = ""; var q = 0; var regCn = /[@:]/im; var pattern = /^[\u4E00-\u9FA5]{1,5}$/; // 同意 document.querySelector(.yes).onclick=function () { document.querySelector(.dark).style.display=none } document.querySelector(.ys).onclick = function () { document.querySelector(.dark).style.display = block } // 初始页面注册 document.querySelector("#reg").onclick = function () { register1.style.display = "block"; init.style.display = "none"; document.querySelector(".bg").style.display = "none"; } // 初始页面登录 document.querySelector("#log").onclick = function () { login1.style.display = "block"; init.style.display = "none"; document.querySelector(".bg").style.display = "none"; } // 登录按钮 login_b.onclick = function () { login(); } // 注册按钮 register_b.onclick = function () { register(); } //发送 document.getElementById("btn").onclick = function () { send(); }; // 内容填充 document.getElementById("text").onkeyup = function () { if (document.getElementById("text").value.length != 0) { document.getElementById("btn").style.cssText = "background:#98E165;color:#fff;" } else { document.getElementById("btn").style.cssText = "background: #DDDEE2;color:#fff" } } document.querySelector("#text").onclick = function () { document.querySelector(#text).scrollIntoView(false); } // 传名 var users2 = ""; socket.on(users, function (users) { users2 = users; // console.log(users2); }); // 传密码 var pass2 = "" socket.on(pass, function (val) { pass2 = val; // console.log(pass2) }); // 统计在线人数 var arrh = [] socket.on(dataval, function (val) { vf = val; console.log(vf); for (let i = 0; i < vf.length; i++) { // uu++ arrh.push(vf[i]) console.log(arrh) } var rf = [...new Set(arrh)] console.log(rf) rf = vf for (let j = 0; j < rf.length; j++) { var li = document.createElement("li"); li.classList.add("active"); li.innerText = rf[j] console.log(rf[j]) socket.emit("time", rf[j]); document.querySelector(".fix").appendChild(li); } }); socket.on(join, function (val) { document.querySelector(".fix").innerHTML = }) socket.on(disconnect, function (val) { console.log(离开了) document.querySelector(".fix").innerHTML = }) // 生成数组 var ar = ""; socket.on(array, function (val) { ar = val; // console.log(ar); }); // 封装注册 function register() { if (re.value.length == 0) { sweetAlert("请输入用户名！"); return false; } else if (regCn.test(re.value)) { sweetAlert("格式错误，不能够用和:符号取名，请重新输入！"); return false; } else if (pattern.test(re.value)) { sweetAlert("不能使用中文字符哦！"); return false; } else if (!(re.value.length == 0 && regCn.test(re.value))) { if (users2.indexOf(re.value) != -1) { sweetAlert("已经注册啦,换一个用户名吧！"); } else { names(re.value.trim()); pass(passr.value.trim()); sweetAlert("注册成功,您的用户名:" + re.value.trim()); document.querySelector(".swal-button").onclick = function () { window.location.reload(); } } } } //移动端使用touchend var event = navigator.userAgent.match(/(iPhone|iPod|Android|ios)/i) ? touchend : click; // 选择器 var Q = function (id) { return document.getElementById(id) }; //右 var _right = new mSlider({ dom: ".layer-right", direction: "right" }); Q("btnRight").addEventListener(event, function (e) { _right.open(); }) // 封装登录 function login() { if (lo.value.length == 0) { sweetAlert("请输入用户名！"); return false; } else if (regCn.test(lo.value)) { sweetAlert("格式错误，不能够用和:符号取名，请重新输入！"); return false; } else if (pattern.test(lo.value)) { sweetAlert("不能使用中文字符哦！"); return false; } else if (!(lo.value.length == 0 && regCn.test(lo.value))) { if (users2.indexOf(lo.value) != -1) { for (var i = 0; i < users2.length; i++) { if (users2[i] === lo.value && pass2[i] === passl.value) { if (ar.indexOf(lo.value) == -1) { sweetAlert("恭喜您，登录成功！"); socket.emit(setName, lo.value.trim()); names1(lo.value.trim()); login1.style.display = "none"; document.querySelector(".bg").style.display = "none"; document.querySelector(".cd span").style.display = "none"; document.querySelector(".title img").style.display = "block"; document.querySelector(".fix").style.display = "block"; document.querySelector(".title").style.display = "block"; _right.open(); document.querySelector(".swal-button").onclick = function () { document.getElementById("text").focus(); document.querySelector(".fix").addEventListener(click, function (e) { if (e.target.nodeName === "LI" && e.target.innerText != document.title) { _right.close(); document.querySelector(".chat_b").style.display = "block"; document.querySelector(".box").style.display = "block"; document.querySelector(".tit").innerText = e.target.innerText; document.querySelector(".ys").style.display="none"; document.querySelector("#text").focus(); onOff = true; } else { sweetAlert("不能跟自己聊天哦~"); } }) } } else { sweetAlert("不能重复登录哦！"); return } } if (users2[i] === lo.value && pass2[i] != passl.value) { sweetAlert("密码错误！服务器租用"); return; } } } else { sweetAlert("请先注册哦！"); login1.style.display = "none"; register1.style.display = "block"; } } } // 传名 function names(value) { this.name = value; socket.emit("reg", name); } function names1(value) { this.name1 = value; socket.emit("join", name1); document.title = name1 } // 传密码 function pass(value) { socket.emit("pass", value); } socket.on("join", function (user) { this.na = user; }) socket.on("reg", function (user) { this.na1 = user; }) // 私发消息 socket.on(message1, function (data) { var p1 = document.createElement("div"); var s1 = document.createElement("p"); var s2 = document.createElement("p"); var div1 = document.createElement("div"); var em = document.createElement("em"); var ads = document.createElement("audio"); ads.src = "https://www.maomin.club/data/res.mp3"; ads.className = "ads"; s1.className = "chatlist"; s2.className = "chatlist1"; em.className = "zwasked1"; div1.className = "divbox"; s1.innerText = data.from; s2.innerText = data.msg; s1.appendChild(em); p1.appendChild(s1); p1.appendChild(s2); chat.appendChild(ads); ads.play(); div1.appendChild(p1); chat.appendChild(div1); chat.scrollTop = chat.scrollHeight; }); // 私聊发送 function send() { if (document.getElementById("text").value != "") { socket.emit(sayTo, { from: lo.value, to: document.querySelector(".tit").innerText, msg: document.querySelector("#text").value, }) var p1 = document.createElement("div"); var s1 = document.createElement("p"); var s2 = document.createElement("p"); var em = document.createElement("em"); var div1 = document.createElement("div"); var ads = document.createElement("audio"); p1.style.cssText = "float:right;"; s2.style.cssText = "color:#333;" ads.src = "https://www.maomin.club/data/s.wav"; ads.className = "ads"; div1.className = "divbox"; s1.className = "chatlist"; s1.style.cssText = "color:#333 !important;float:right; !important"; s2.className = "chatlist2"; em.className = "zwasked"; s1.innerText = lo.value; s2.innerText = document.querySelector("#text").value; s1.appendChild(em); p1.appendChild(s1); p1.appendChild(s2); chat.appendChild(ads); ads.play(); div1.appendChild(p1); chat.appendChild(div1); chat.scrollTop = chat.scrollHeight; } else { sweetAlert(请输入内容！); } chat.scrollTop = chat.scrollHeight; document.querySelector("#text").value = ""; document.querySelector("#text").focus(); }后台主要核心逻辑：
我这里只列举了http环境的，完整代码中有https环境的。
var http=require("http"); var fs=require("fs"); var express = require(express); var ws=require("socket.io"); var path=require("path"); var _ = require(underscore); var usocket = []; var usocket1 = []; var pass=[]; var data=[]; var hashName = {}; var onlineCount = 0; var app = express(); // 静态文件识别 app.use(express.static(path.join(__dirname, ./public))); var server=http.createServer(function (req,res) { var filename = req.url.split(/)[req.url.split(/).length-1]; var suffix = req.url.split(.)[req.url.split(.).length-1]; if(req.url===/){ res.writeHead(200, {Content-Type: text/html}); var html = fs.readFileSync("./public/index.html"); res.end(html) }else if(suffix===css){ res.writeHead(200, {Content-Type: text/css}); res.end(get_file_content(path.join(__dirname, public, css, filename))); }else if(suffix===js) { res.writeHead(200, {Content-Type: text/javascript}); res.end(get_file_content(path.join(__dirname, public, js, filename))); }else if (suffix in [gif, jpeg, jpg, png]) { res.writeHead(200, { Content-Type: image/ + suffix }); res.end(get_file_content(path.join(__dirname, public, images, filename))); } }); function get_file_content(filepath) { return fs.readFileSync(filepath); } // 获取在线 function broadcast() { io.sockets.emit("dataval", hashName); } //提供私有socket function privateSocket(toId) { return (_.findWhere(io.sockets.sockets, { id: toId })); } // 封装删除 function removeByValue(arr, val) { for (var i = 0; i < arr.length; i++) { if (arr[i] == val) { arr.splice(i, 1); break; } } } // 连接socket var io=ws(server); io.on("connection",function(socket){ // 写入成功后读取测试 fs.readFile(./user.xls, utf-8, function (err, data) { if(data!=null){ var value = data.split(n); io.sockets.emit("users", value); } }); // 写入成功后读取测试 fs.readFile(./password.xls, utf-8, function (err,data) { if(data!=null){ var pass1=data.split(n); io.sockets.emit("pass", pass1); } }); broadcast(); // 生成名字 socket.on(setName, function (data) { var name = data; hashName[name] = socket.id; // console.log(hashName[name]); broadcast(); }); // 私聊发送 socket.on(sayTo, function (data) { var toName = data.to; var toId; console.log(toName); if (toId = hashName[toName]) { privateSocket(toId).emit(message1, data); } }); // 离开 socket.on(disconnect, function (name) { name=this.i2; io.emit("disconnect", name); removeByValue(data, name); io.sockets.emit("dataval", data); }) // 在线 socket.on(time, function (val) { // console.log(val); }) // 注册 socket.on("reg", function (name) { usocket[name] = socket; this.i1=name; io.emit("reg", name); var myname =this.i1+"\n"; fs.writeFile(./user.xls, myname, { flag: a }, function (err) { if (err) { throw err; } // 写入成功后读取测试 fs.readFile(./user.xls, utf-8, function (err,data) { if (err) { throw err; } }); }); }) // 加入 io.emit(connected, ++onlineCount); // console.log(data); io.sockets.emit("array", data); socket.on("join", function (name) { usocket1[name] = socket; this.i2 = name; io.emit("join", name); data.push(name); io.sockets.emit("dataval", data); }) // 密码 socket.on("pass",function(val){ pass[val]=socket; this.i2=val; io.emit("pass", val); var password=this.i2+"\n"; fs.writeFile(./password.xls, password, { flag: a }, function (err) { if (err) { throw err; } }); }) }); server.listen(3003); console.log("服务器运行中");三、源码地址
这个项目是之前写的，欢迎大家进行指正。大家可以复制下面的源码地址，拉取下来就可以在本地实现一个聊天服务。如果你有服务器可以把它部署在服务器上，这样你就可以有一个属于自己的聊天App了。大家可以根据源码进行学习，有不明白的可以随时问我。
https://github.com/maomincoding/chat3
