前端实现简单的聊天页面
HTML
<div class="container">
<div class="content">
<div class="item item-center"><span>昨天 12:35</span></div>
<div class="item item-center"><span>你已添加了凡繁烦，现在可以开始聊天了。</span></div>
<div class="item item-left"><div class="avatar"><img src="https://dss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=25668084,2889217189&fm=26&gp=0.jpg" /></div><div class="bubble bubble-left">您好,我在武汉，你可以直接送过来吗，我有时间的话，可以自己过去拿<br/>！！！<br/>123</div></div>
<div class="item item-right"><div class="bubble bubble-right">hello<br/>你好呀</div><div class="avatar"><img src="https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3313909130,2406410525&fm=15&gp=0.jpg" /></div></div>
<div class="item item-center"><span>昨天 13:15</span></div>
<div class="item item-right"><div class="bubble bubble-right">刚刚不在，不好意思</div><div class="avatar"><img src="https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3313909130,2406410525&fm=15&gp=0.jpg" /></div></div>
<div class="item item-left"><div class="avatar"><img src="https://dss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=25668084,2889217189&fm=26&gp=0.jpg" /></div><div class="bubble bubble-left">没事<br/>你继续！</div></div>
<div class="item item-left"><div class="avatar"><img src="https://dss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=25668084,2889217189&fm=26&gp=0.jpg" /></div><div class="bubble bubble-left">看到了<br/>在下面</div></div>
<div class="item item-left"><div class="avatar"><img src="https://dss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=25668084,2889217189&fm=26&gp=0.jpg" /></div><div class="bubble bubble-left">你发一个<br/>刚刚网卡了</div></div>
<div class="item item-right"><div class="bubble bubble-right">可以<br/>一会儿再发给你</div><div class="avatar"><img src="https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3313909130,2406410525&fm=15&gp=0.jpg" /></div></div>
</div>
<div class="input-area">
<textarea name="text" id="textarea"></textarea>
<div class="button-area">
<button id="send-btn" onclick="send()">发 送</button>
</div>
</div>
</div>
CSS
*{
padding: 0;
margin: 0;
}
body{
height: 100vh;
width: 100%;
display: flex;
align-items: center;
justify-content: center;
}
.container{
height: 760px;
width: 900px;
border-radius: 4px;
border: 0.5px solid #e0e0e0;
background-color: #f5f5f5;
display: flex;
flex-flow: column;
overflow: hidden;
}
.content{
width: calc(100% - 40px);
padding: 20px;
overflow-y: scroll;
flex: 1;
}
.content:hover::-webkit-scrollbar-thumb{
background:rgba(0,0,0,0.1);
}
.bubble{
max-width: 400px;
padding: 10px;
border-radius: 5px;
position: relative;
color: #000;
word-wrap:break-word;
word-break:normal;
}
.item-left .bubble{
margin-left: 15px;
background-color: #fff;
}
.item-left .bubble:before{
content: "";
position: absolute;
width: 0;
height: 0;
border-left: 10px solid transparent;
border-top: 10px solid transparent;
border-right: 10px solid #fff;
border-bottom: 10px solid transparent;
left: -20px;
}
.item-right .bubble{
margin-right: 15px;
background-color: #9eea6a;
}
.item-right .bubble:before{
content: "";
position: absolute;
width: 0;
height: 0;
border-left: 10px solid #9eea6a;
border-top: 10px solid transparent;
border-right: 10px solid transparent;
border-bottom: 10px solid transparent;
right: -20px;
}
.item{
margin-top: 15px;
display: flex;
width: 100%;
}
.item.item-right{
justify-content: flex-end;
}
.item.item-center{
justify-content: center;
}
.item.item-center span{
font-size: 12px;
padding: 2px 4px;
color: #fff;
background-color: #dadada;
border-radius: 3px;
-moz-user-select:none; /*火狐*/
-webkit-user-select:none; /*webkit浏览器*/
-ms-user-select:none; /*IE10*/
-khtml-user-select:none; /*早期浏览器*/
user-select:none;
}
.avatar img{
width: 42px;
height: 42px;
border-radius: 50%;
}
.input-area{
border-top:0.5px solid #e0e0e0;
height: 150px;
display: flex;
flex-flow: column;
background-color: #fff;
}
textarea{
flex: 1;
padding: 5px;
font-size: 14px;
border: none;
cursor: pointer;
overflow-y: auto;
overflow-x: hidden;
outline:none;
resize:none;
}
.button-area{
display: flex;
height: 40px;
margin-right: 10px;
line-height: 40px;
padding: 5px;
justify-content: flex-end;
}
.button-area button{
width: 80px;
border: none;
outline: none;
border-radius: 4px;
float: right;
cursor: pointer;
}
/* 设置滚动条的样式 */
::-webkit-scrollbar {
width:10px;
}
/* 滚动槽 */
::-webkit-scrollbar-track {
-webkit-box-shadow:inset006pxrgba(0,0,0,0.3);
border-radius:8px;
}
/* 滚动条滑块 */
::-webkit-scrollbar-thumb {
border-radius:10px;
background:rgba(0,0,0,0);
-webkit-box-shadow:inset006pxrgba(0,0,0,0.5);
}
JS
function send(){
let text = document.querySelector('#textarea').value;
if(!text){
alert('请输入内容');
return ;
}
let item = document.createElement('div');
item.className = 'item item-right';
item.innerHTML = `<div class="bubble bubble-left">${text}</div><div class="avatar"><img src="https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3313909130,2406410525&fm=15&gp=0.jpg" /></div>`;
document.querySelector('.content').appendChild(item);
document.querySelector('#textarea').value = '';
document.querySelector('#textarea').focus();
//滚动条置底
let height = document.querySelector('.content').scrollHeight;
document.querySelector(".content").scrollTop = height;
}效果
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作者：文心
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