js编写简单的聊天室功能
2020-11-27
来源：尚佳旅游分享网
这个聊天室写的特别简易，比较适合刚开始学习js的同学借鉴，当然，写的不好，也希望诸位大神可以进行批评改正。
聊天室要求：
1.不能发空消息
2.敏感字***显示
3.图片替换 开心，尴尬
4.显示聊天内容和时间
5.每发一条信息，随机显示名称，先把一些名称定义到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="点击发送" onclick="sendMessage()" />
</div>
</div>
<div class="left right">
<p>1.不能发空消息</p>
<p>2.敏感字***显示</p>
<p>3.图片替换 开心，尴尬</p>
<p>4.显示聊天内容和时间</p>
<p>5.每发一条信息，随机显示名称，先把一些名称定义到array里面</p>
</div>
</body>
<script type="text/javascript">
// document.getElementById("chatList").scrollHeight;
/*
添加敏感字替换成**---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(){
//通过调用randomName()函数来得到一个随机的名字
var name = randomName();
//通过调用randomColor()函数来得到一个随机的颜色
var colorR = randomColor();
//得到textarea中的内容
var content = document.getElementById("content").value;
//判断输入内容是否为空
if (content == "") {
alert("输入内容不能为空！！！");
return;
}
//通过正则表达式来获取要替换的字符串
var regExp = /藏独|台独|傻逼|你大爷/g;
var regExp1 = /开心/g;
var regExp2 = /尴尬/g;
// var imgReplace = content.replace(regExp,"高兴");
//获取开心图片路径
var path1 = '<img src="img/chui.png"/>';
//获取尴尬图片的路径
var path2 = '<img src="img/mouse.png"/>';
//敏感字替换；
content = content.replace(regExp,"***");
//将开心替换成开心图片的字符串；
// txtReplace(content);
var imgReplace = content.replace(regExp1,path1);
// alert(imgReplace);
//将尴尬替换成尴尬图片的字符串；
imgReplace = imgReplace.replace(regExp2,path2);
// alert(imgReplace);
var chatContent = "<span>"+ name + ":" + "</span>" + " " + imgReplace;
// 字符串拼接聊天记录
chatContents =chatContents + chatContent + " " + loadTime() +"<br/>";
document.getElementById("chatList").innerHTML = chatContents;
//点击发送后，textarea中的内容设为空
document.getElementById("content").value = "";
var txtColor = document.getElementsByTagName("span")[count];
count++;
//设置span的随机颜色
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","兰兰","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>
显示全文