這個(gè)聊天室寫的特別簡(jiǎn)易，比較適合剛開始學(xué)習(xí)js的同學(xué)借鑒，當(dāng)然，寫的不好，也希望諸位大神可以進(jìn)行批評(píng)改正。
聊天室要求：
1.不能發(fā)空消息
2.敏感字***顯示
3.圖片替換 開心，尷尬
4.顯示聊天內(nèi)容和時(shí)間
5.每發(fā)一條信息，隨機(jī)顯示名稱，先把一些名稱定義到array里面
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> *{ box-sizing: border-box; } .left{ float: left; width: 20%; height: 650px; color: red; border: 1px solid red; border-right: 20px solid cornflowerblue; } .center{ position: relative; float: left; width: 60%; height: 650px; border: 1px solid darkcyan; } .chatList{ width: 100%; height: 500px; overflow-y: scroll; } .bottom{ position: absolute; width: 100%; height: 150px; left: 0; bottom: 0; background: skyblue; } .bottom textarea{ width: 70%; height: 100%; font-size: 18px;; vertical-align: middle; border: 1px solid red; background: blanchedalmond; } .bottom input{ width: 80px; height: 40px; margin-left: 30px; } .right{ float: right; color: #000000; border-right: 0; border-left: 20px solid cornflowerblue; } </style> </head> <body onload="loadTime()"> <div class="left" id="left"> </div> <div class="center" id="center"> <div class="chatList" id="chatList"> </div> <div class="bottom"> <textarea id="content" name="content" ></textarea> <input type="button" name="send" id="send" value="點(diǎn)擊發(fā)送" onclick="sendMessage()" /> </div> </div> <div class="left right"> <p>1.不能發(fā)空消息</p> <p>2.敏感字***顯示</p> <p>3.圖片替換 開心，尷尬</p> <p>4.顯示聊天內(nèi)容和時(shí)間</p> <p>5.每發(fā)一條信息，隨機(jī)顯示名稱，先把一些名稱定義到array里面</p> </div> </body> <script type="text/javascript"> // document.getElementById("chatList").scrollHeight; /* 添加敏感字替換成**---8.10 * */ function loadTime(){ var time = new Date(); var hours = (time.getHours()).toString(); if(hours.length < 2){ hours = "0" + hours; } var minutes = (time.getMinutes()).toString(); if(minutes.length < 2){ minutes = "0" + minutes; } var seconds = (time.getSeconds()).toString(); if(seconds.length < 2){ seconds = "0" + seconds; } var timeReturn = hours + ":" + minutes + ":" + seconds; document.getElementById("left").innerHTML = timeReturn; return timeReturn; } setInterval("loadTime()",1000); var chatContents = ""; var count = 0; function sendMessage(){ //通過調(diào)用randomName()函數(shù)來得到一個(gè)隨機(jī)的名字 var name = randomName(); //通過調(diào)用randomColor()函數(shù)來得到一個(gè)隨機(jī)的顏色 var colorR = randomColor(); //得到textarea中的內(nèi)容 var content = document.getElementById("content").value; //判斷輸入內(nèi)容是否為空 if (content == "") { alert("輸入內(nèi)容不能為空！！！"); return; } //通過正則表達(dá)式來獲取要替換的字符串 var regExp = /藏獨(dú)|臺(tái)獨(dú)|傻逼|你大爺/g; var regExp1 = /開心/g; var regExp2 = /尷尬/g; // var imgReplace = content.replace(regExp,"高興"); //獲取開心圖片路徑 var path1 = '<img src="img/chui.png"/>'; //獲取尷尬圖片的路徑 var path2 = '<img src="img/mouse.png"/>'; //敏感字替換； content = content.replace(regExp,"***"); //將開心替換成開心圖片的字符串； // txtReplace(content); var imgReplace = content.replace(regExp1,path1); // alert(imgReplace); //將尷尬替換成尷尬圖片的字符串； imgReplace = imgReplace.replace(regExp2,path2); // alert(imgReplace); var chatContent = "<span>"+ name + ":" + "</span>" + " " + imgReplace; // 字符串拼接聊天記錄 chatContents =chatContents + chatContent + " " + loadTime() +"<br/>"; document.getElementById("chatList").innerHTML = chatContents; //點(diǎn)擊發(fā)送后，textarea中的內(nèi)容設(shè)為空 document.getElementById("content").value = ""; var txtColor = document.getElementsByTagName("span")[count]; count++; //設(shè)置span的隨機(jī)顏色 txtColor.style.color = colorR; } function randomName(){ var i = parseInt(Math.random() * (6 - 0 + 1) + 0); var arrName = new Array("果果","六六","格格","明明","小花","蘭蘭","花花"); return arrName[i]; } function randomColor(){ var r = parseInt(Math.random() * (255 - 0 + 1) + 0).toString(16); if(r.length < 2){ r = "0" + r; } var g = parseInt(Math.random() * (255 - 0 + 1) + 0).toString(16); if(g.length < 2){ g = "0" + g; } var b = parseInt(Math.random() * (255 - 0 + 1) + 0).toString(16); if(b.length < 2){ b = "0" + b; } return "#" + r + g + b; } </script> </html> 以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持武林網(wǎng)。
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