JavaScript仿聊天室聊天记录

本文实例为大家分享了js仿聊天室聊天记录的具体代码，供大家参考，具体内容如下

参考样式（css自定义聊天窗口样式）：http://xiazai.jb51.net/201612/yuanma/css3chatstyle(jb51.net).rar

功能描述：

1. 用户在微信公众号里发送内容，参与活动
2. 后台提供类似聊天室的窗口显示用户实时发布的内容

界面截图：

代码：

body {
 padding: 0;
 margin: 0;
 background: -moz-linear-gradient(-45deg, #183850 0, #183850 25%, #192c46 50%, #22254c 75%, #22254c 100%);
 background: -webkit-linear-gradient(-45deg, #183850 0, #183850 25%, #192c46 50%, #22254c 75%, #22254c 100%);
 background-repeat: no-repeat;
 background-attachment: fixed;
} 

::-webkit-scrollbar {
 width: 10px;
} 

::-webkit-scrollbar-track {
 border-radius: 10px;
 background-color: rgba(25, 147, 147, 0.1);
} 

::-webkit-scrollbar-thumb {
 border-radius: 10px;
 background-color: rgba(25, 147, 147, 0.2);
} 

.chat-thread {
 margin: 24px auto 0 auto;
 padding: 0 20px 0 0;
 list-style: none;
 overflow-y: scroll;
 overflow-x: hidden;
} 

.chat-thread .li {
 position: relative;
 clear: both;
 display: inline-block;
 padding: 16px 40px 16px 20px;
 margin: 0 0 20px 0;
 font: 16px/20px 'Noto Sans', sans-serif;
 border-radius: 10px;
 background-color: rgba(25, 147, 147, 0.2);
} 

/* Chat - Avatar */
.chat-thread .img {
 width: 50px;
 height: 50px;
 border-radius: 50px;
 content: '';
 float:left; 

} 

/* Chat - Speech Bubble Arrow */
.chat-thread li:after {
 position: absolute;
 top: 15px;
 content: '';
 width: 0;
 height: 0;
 border-top: 15px solid rgba(25, 147, 147, 0.2);
} 

.chat-thread li:nth-child(odd) {
 animation: show-chat-odd 0.15s 1 ease-in;
 -moz-animation: show-chat-odd 0.15s 1 ease-in;
 -webkit-animation: show-chat-odd 0.15s 1 ease-in;
 float: right;
 margin-right: 80px;
 color: #0AD5C1;
} 

.chat-thread li:nth-child(odd):before {
 right: -80px;
} 

.chat-thread li:nth-child(odd):after {
 border-right: 15px solid transparent;
 right: -15px;
} 

.chat-thread li:nth-child(even) {
 animation: show-chat-even 0.15s 1 ease-in;
 -moz-animation: show-chat-even 0.15s 1 ease-in;
 -webkit-animation: show-chat-even 0.15s 1 ease-in;
 float: left;
 margin-left: 80px;
 color: #0EC879;
} 

.chat-thread li:nth-child(even):before {
 left: -80px;
} 

.chat-thread li:nth-child(even):after {
 border-left: 15px solid transparent;
 left: -15px;
} 

.chat-window {
 position: fixed;
 bottom: 18px;
} 

.chat-window-message {
 width: 100%;
 height: 48px;
 font: 32px/48px 'Noto Sans', sans-serif;
 background: none;
 color: #0AD5C1;
 border: 0;
 border-bottom: 1px solid rgba(25, 147, 147, 0.2);
 outline: none;
} 

/* Small screens */
@media all and (max-width: 767px) {
 .chat-thread {
 width: 90%;
 height: 500px;
 } 

 .chat-window {
 left: 5%;
 width: 90%;
 }
}
/* Medium and large screens */
@media all and (min-width: 768px) {
 .chat-thread {
 width: 70%;
 height: 500px;
 } 

 .chat-window {
 left: 25%;
 width: 50%;
 }
}
@keyframes show-chat-even {
 0% {
 margin-left: -480px;
 } 

 100% {
 margin-left: 0;
 }
}
@-moz-keyframes show-chat-even {
 0% {
 margin-left: -480px;
 } 

 100% {
 margin-left: 0;
 }
}
@-webkit-keyframes show-chat-even {
 0% {
 margin-left: -480px;
 } 

 100% {
 margin-left: 0;
 }
}
@keyframes show-chat-odd {
 0% {
 margin-right: -480px;
 } 

 100% {
 margin-right: 0;
 }
}
@-moz-keyframes show-chat-odd {
 0% {
 margin-right: -480px;
 } 

 100% {
 margin-right: 0;
 }
}
@-webkit-keyframes show-chat-odd {
 0% {
 margin-right: -480px;
 } 

 100% {
 margin-right: 0;
 }
}
.credits{
 text-align:center;
 margin-top:35px;
 color: rgba(255, 255, 255, 0.35);
 font-family: 'Noto Sans', sans-serif;
}
.credits a{
 text-decoration:none;
 color: rgba(255, 255, 255, 0.35);
}

<!DOCTYPE html>
<html>
 <head>
 <meta charset="UTF-8">
 <title>红包详情</title>
 <meta name="keywords" content="keyword1,keyword2,keyword3">
 <meta name="description" content="this is my page">
 <meta name="content-type" content="text/html; charset=UTF-8">
 <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
 <script src="../js/jquery-1.7.2.min.js"></script>
 <link rel="stylesheet" href="css/style.css" media="screen" type="text/css" />
 </head>
 <body >
 <div id="convo" class="chat-thread"></div>
 </body>
 <script type="text/javascript">
 var maxId = 0;
 var ip = "http://...";
 var imgArr=new Array();
 var contentArr=new Array();
 var canAdd = false;
 function loadUser(){
  $.post("../servlet/luckDraw", // 访问后台查询数据
    {
    type : "messageList",
    limit : 5,
    maxId : maxId,
    time : new Date()
    },
    function(data,status){
    var jsonobj=eval('('+data+')');
    if(jsonobj.code=="200"){
     canAdd = false;
     imgArr=new Array();
     contentArr=new Array();
     var jsonarr = jsonobj.list;
     var str = "";
     for(var i=0;i<jsonarr.length;i++){
      //console.log(time1);
      imgArr[i] = ip+jsonarr[i].headImg;
      contentArr[i] = jsonarr[i].content;
      maxId = jsonarr[i].id;
     }
     canAdd = true;
    }
  });
 }
 loadUser();
 //var t1 = window.setTimeout(time(1),1000);
 var t1 = window.setInterval(time,3000);
 function time(){
  if(!canAdd)
   return;
  if(imgArr.length==0){
   loadUser();
   return;
  }
  var img = imgArr[0];
  var content = contentArr[0];
  imgArr.splice(0, 1);
  contentArr.splice(0, 1);
  $("#convo").append('<div>'+
    '<div style="width:60px;height:50px;float:left">
     <img alt="" height="50px" width="50px" class="img" src="'+img+'"></div>'+
    '<div style="width:90%;float:left;"><span class="li">'+content+'</span>
    </div>'+ '</div>');
  var e=document.getElementById("convo");//保持滚动条一直在最底部
  e.scrollTop=e.scrollHeight;
 }
</script>
</html>

String sql = "SELECT c.*,u.nickName,u.headImg "
    + "from wx_costomersendmessage c,bid_user u "
    + "where c.openId=u.openId and c.id>"+maxId
    +" order by c.id Limit 0,"+limit;

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