本文实例为大家分享了jQuery实现简易聊天框的具体代码，供大家参考，具体内容如下
效果：
CSS代码：
body{
margin: 0;
}
.kuan{
height:550px;
width: 650px;
background-color: #ccc;
margin: 80px auto;
}
.header{
width: 100%;
height: 35px;
background-color: #00f;
}
.chatBody{
width: 100%;
height: 70%;
overflow:auto;
}
.footer{
width: 100%;
height: 20%;
}
h2{
margin-bottom: 0;
text-align: center;
}
.send{
background-color: green;
width: 50px;
}
.btn{
text-align: right;
}
.btn span{
display: inline-block;
padding: 0 10px;
height: 25px;
overflow: hidden;
color: #fff;
border-radius: 5px;
background-color: #069dd5;
font-size: 12px;
margin-right: 3px;
cursor:pointer;
}
.chatText{
border: none;
width: 100%;
height: 50px;
}
#input{
margin-left: 200px;
width: 100px;
}
.a{
background-color: green;
border-radius: 5px;
width: 200px;
height: 100%;
}
主代码：
<div class = "kuan"> <div class = "header"> <h2>聊天室</h2> </div> <div class = "chatBody"></div> <div class = "footer"> <textarea class="chatText"></textarea> <div class="btn"><span>关闭(C)</span><span id="send">发送(S)</span></div> <input type = "text" id = "input"></input> <input type = "submit" value = "确定" id = "sure"></input> <select id = "demo"> <option value = ""></option> </select> </div> </div>
jQuery代码：
<script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.min.js"></script>
<script type="text/javascript">
$("#demo").change(function(){
$("#input").val($(this).val());//将下拉框里的内容放到文本框里
});
$(document).ready(function(){
$("#send").click(function(){
var $nei = $("textarea").val();
var $n = $("#input").val();
if($nei.length==""){
alert("你没写东西啊");
}else{
var $currentstr=$(".chatBody").append("<div>" + $n + ":" + "<p>" + $nei + "</p></div>");
$(".chatBody p").addClass("a");//消息框颜色
$("textarea").val("");//发送框消息消失
}
});
});
</script>
