简易聊天室

简易聊天室的实现

聊天室是我们经常见的,比如微信聊天界面、QQ聊天界面等等,一个简易的聊天室如下:

1.html代码

<div class="content">
	<div class="section"></div>
	<form action="#">
		<textarea  id="$value"></textarea>
		<button type="button" id="sub">发送</button>
	</form>
</div>

2.css代码

.content{
		border-radius: 5px;
		border: 2px solid #cccccc;
		width: 500px;
		height: 700px;
		margin: 50px auto 0;
		overflow: hidden;
	}
	.section{
		width: 500px;
		height: 569px;
		overflow-x: hidden;
		overflow-y: auto;
		border-bottom: 1px solid #cccccc; 
		padding-top: 30px;
	}
	.section::-webkit-scrollbar{
		display: none;
	}
	form{
		width: 500px;
		height: 100px;
	}
	form textarea{
		outline: none;
		border: none;
		display: block;
		float: left;
		width: 370px;
		height: 100px;
		font-size: 25px;
		text-align: top;
		line-height: 35px;
		resize: none;
	}
	form button{
		outline: none;
		border: none;
		display: block;
		float: left;
		width: 130px;
		height: 100px;
	}
	form button:active{
		background: #ccc;
	}
	.line{
		width: 500px;
		overflow: hidden;
	}
	.left,.right{
		height: auto;
		font-size: 25px;
		line-height: 50px;
		border-radius: 10px;
		padding: 0 10px;
		overflow-wrap: break-word;
		margin-bottom: 20px;
	}
	.left{
		max-width: 400px;
		margin-left: 20px;
		float: left;
		background: rgb(243, 244, 245);
	}
	.right{
		max-width: 400px;
		float: right;
		margin-right: 20px;
		background: rgb(79, 230, 49);
	}

3.js代码

<script type="text/javascript">
	function $(str){
		if (str[0]=='.') {
			return document.getElementsByClassName(str.substring(1));
		}else if (str[0]=='#') {
			return document.getElementById(str.substring(1));
		}else{
			return document.getElementsByTagName(str);		
		}
	}
	//以上代码可以单独封装成一个函数
	var count = 0;
	$('#sub').onclick=function(){
	//当点击发送按钮后,创建class名为line的盒子,来盛放聊天的内容
		var div = document.createElement('div');
		div.className = 'line';
		$('.section')[0].appendChild(div);
		var str = $('#$value').value;
		var p = document.createElement('p');
		if (count%2==1) {
			p.className = 'left';
		}else{
			p.className = 'right';
		}
		p.innerHTML = str;
		$('#$value').value = '';
		div.appendChild(p);
		count++;
	}
	
</script>

4.效果图

好啦,一个简易的聊天室就制作完啦! ✌️ ✌️ ✌️ ✌️ ✌️ ✌️

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转载自blog.csdn.net/weixin_43363871/article/details/90610241