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    一个简单的前端静态聊天界面，实现了聊天的基本功能，目前后台还没做，接下来还会继续更新后台和完善前台样式并更新。

一.Html代码

    
           
       
   
    
    
        
             
     
        
     
        
     
            
                  
      
                
                       
       
                    
        
 
          
        
                
       
                
       
                    
        
 
         
 
          
 
           
 
            
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             天狼星
            
 
            
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              黄 
            
 
           
 
           
 
            
             天狼星
            
 
            
             4-12-15:10
            
 
           
 
          
 
 
         
 
          
 
           
 
            
              黄 
            
 
           
 
           
 
            
             天狼星
            
 
            
             4-12-15:10
            
 
           
 
          
 
 
        
                
       
            
      
            
                  
      
                
       
                    
        
 
        
                
       
                
       
                    
        
 
          
          
        
                
       
            
      
            
                  
      
            
      
        
     
    
    
   

二.CSS代码

    有些需要注意的地方已经标上注释了

* {    margin: 0;    padding: 0;    font-size: 12px;    font-family: "微软雅黑";}.all {    width: 100%;    height: 790px;    /*background-color: #7fa4f2;*/    background: linear-gradient(to right, #879eee, #ba78dc); /* 标准的语法 */}.chat_index {    width: 1000px;    height: 600px;    border: 1px solid black;    position: relative;    top: 100px;    margin: 0 auto;}.chat_banner {    background: linear-gradient(to right, #a41adc, #ee1351, #a41adc); /* 标准的语法 */    width: 999px;    height: 50px;    border: 1px solid blue;}.chat_body {    width: 999px;    height: 546px;    border: 1px solid red;}.chat_online {    overflow: hidden;    float: left;    height: 546px;    width: 200px;    border: 1px solid yellow;    background-color: white;}.search_online {    text-indent: 2em;    height: 40px;    border: 1px solid black;}.search_online input[type="text"] {    outline: none;    margin: 2px auto;    height: 30px;    width: 60%;    border-radius: 8px;    text-indent: 2em;}.online_friend ul li {    list-style-type: none;}.online_friend ul li {    height: 60px;    border-bottom: 1px solid #1c1f21;    margin-top: 10px;}.a_friend {    /*border: 1px solid #2328ff;*/    height: 55px;    background-color: #39fffe;}.head_portrait {    background-color: #b532ff;    margin: 6px 6px;    float: left;    height: 40px;    width: 40px;    border: 1px solid orangered;    border-radius: 50%;}.head_text {    padding: 3px;    font-size: 22px;    text-align: center;    vertical-align: center;    margin-top: 3px;}.friend {    float: right;    height: 54px;    width: 140px;    /*border: 1px solid rebeccapurple;*/}.friend .name {    margin: 4px 6px;    float: left;}.friend .this_time {    margin-top: 4px;    float: right;}.chat_main {    float: left;    width: 548px;    height: 546px;    border: 1px solid seagreen;    /*background-color: white;*/    background: url("../img/圣诞.jpg") no-repeat;    background-size: cover;}.send_message {    width: 548px;    height: 65px;    position: absolute;    bottom: 0px;    background: linear-gradient(to top, rgba(9, 216, 237, 0.99), #72cad4);}.send_message input[type="text"] {    width: 470px;    height: 30px;    margin-top: 16px;    margin-left: 10px;    border-radius: 10px 0 0 10px;    text-indent: 2em;    outline: none;    background-color: white;    border: none;}.send_message input[type="button"] {    border-radius: 0 10px 10px 0;    width: 35px;    height: 30px;    background-color: white;    border: none;    margin-left: 0;    background-color: white;    border: none;    outline: none;}.send_message input[type="button"]:hover {    background-color: orangered;}.send_message input[type="button"]:active {    background-color: #879eee;}.chat_namecard {    float: left;    width: 245px;    height: 546px;    border: 1px solid saddlebrown;    background-color: #f1fea9;}.chat_content ul{list-style-type: none;}.chat_content{    overflow: auto;    width: 540px;    /*设置高度滚动条才有效*/    height: 470px;}.chat_content li{    margin-top: 10px;    width: 540px;    clear: both;    display: block;}.chat_content li img{    margin: 6px 0 0 0;}.chat_content li span {    background: #ffd351;    padding: 10px;    border-radius: 10px;    /*最大宽度不能太长，不然布局会混乱*/    max-width: 400px;    border: 1px solid white;    box-shadow: 0 0 3px #879eee;    margin: 6px 10px 0 10px;    overflow: hidden;}.chat_content li img {    width: 40px;    height: 40px;    border-radius: 50%;}.chat_content li img.imgleft { margin-left: 10px;    float: left;}.chat_content li img.imgright { margin-right: 10px;    float: right;}.chat_content li span.spanleft {    float: left;}.chat_content li span.spanright {    float: right;}

三.JS代码

window.onload = function () {    var user = ["../img/img_17.jpg"];    var num = 1;//判断左右    var portrait_position = 0;    var now = -1;//左右浮动    var send_btn = document.getElementById('send_btn');    var send_txt = document.getElementById('send_txt');    var chat_ul = document.getElementById('chat_ul');    var chat_span = chat_ul.getElementsByTagName('span');    var chat_img = chat_ul.getElementsByTagName('img');    send_btn.onclick = function () {        if (send_txt.value == '') {            alert("请不要惜字如金");        } else {            chat_ul.innerHTML += '
' + send_txt.value + '';            now++;            if (num==0) {                chat_span[now].className = 'spanright';                chat_img[now].className = 'imgright';            }             else {                chat_span[now].className = 'spanleft';                chat_img[now].className = 'imgleft';            }            send_txt.value = '';            // 内容过多时,将滚动条放置到最底端            /*contentcontent.scrollTop = content.scrollHeight;*/        }    }}

    num 消息显示在左边还是右边，根据后台请求来操作

四.界面截图

由于图片没有给出，所以需要根据地址自己设置。