本文实例为大家分享了jquery添加div实现消息聊天框的具体代码，供大家参考，具体内容如下
上代码
<html>
<head>
<style>
* {
margin: 0;
padding: 0;
}
.border {
margin-left: 300px;
width: 900px;
background-color: white;
position: relative;
border: 1px solid rgb(221, 221, 221);
}
.border .border-next {
background-color: #dcad50;
position: relative;
height: 23px;
line-height: 40px;
display: flex;
padding: 10px 60px 10px 80px;
}
.border-next .people {
background-color: #dcad50;
font-size: 20px;
color: black;
font-family: 楷体;
margin-left: 300px;
}
.border .border-second {
background-color: white;
margin-left: 0px;
width: 700px;
height: 530px;
flex: 1;
flex-direction: column;
overflow-y: auto;
border-right: 1px solid rgb(221, 221, 221);
border-bottom: 1px solid rgb(221, 221, 221);
}
.border .border-img {
background-color: white;
margin-left: 0px;
width: 700px;
height: 30px;
border-right: 1px solid rgb(221, 221, 221);
border-bottom: 1px solid rgb(221, 221, 221);
}
.border-bottom {
display: flex;
width: 700px;
height: 120px;
background-color: white;
overflow: auto;
font-size: 20px;
border-style: solid;
border-color: #FFFFFF;
border-right: 1px solid rgb(221, 221, 221);
}
.button {
display: flex;
margin-left: 530px;
}
.button .shut {
background-color: white;
width: 70px;
height: 30px;
font-size: 20px;
text-align: center;
border: 1px solid rgb(221, 221, 221);
}
.button .send {
background-color: white;
margin-left: 15px;
width: 70px;
height: 30px;
font-size: 20px;
text-align: center;
border: 1px solid rgb(221, 221, 221);
background-color: #DBAC50;
}
.replyChat {
display:flex;
width: 150px;
background: #12B7F5;
border-radius: 5px;
/* 圆角 */
position: relative;
margin-left: 500px;
align-content: center;
margin-bottom: 30px;
}
.sendChat {
display:flex;
width: 150px;
background: #E5E5E5;
border-radius: 5px;
/* 圆角 */
position: relative;
margin-left: 50px;
align-content: center;
margin-bottom: 30px;
border-color: white white white #E5E5E5;
}
.sendChat span {
display: inline-block;
margin-left: 10px;
line-height: 35px;
}
.replyChat span {
display: inline-block;
margin-left: 10px;
line-height: 35px;
}
.sendChat .arrows {
position: absolute;
top: 5px;
left: -16px;
/* 圆角的位置需要细心调试哦 */
width: 0;
height: 0;
font-size: 0;
border: solid 8px;
border-color: white #E5E5E5 white white;
}
.replyChat .arrow {
position: absolute;
top: 5px;
right: -16px;
/* 圆角的位置需要细心调试哦 */
width: 0;
height: 0;
font-size: 0;
border: solid 8px;
border-color: white white white #12B7F5;
}
.chatTouXiang {
width: 50px;
height: 50px;
border-radius: 50%;
background-repeat: no-repeat;
background-size: cover;
background-position: center;
background-image: url(img/tou.png);
}
.chatCnt{
}
</style>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>聊天助手</title>
<script src="js/jquery-1.8.3.min.js"></script>
<script>
window.οnlοad=function(){
$(".arrow").hide();
$(".arrows").hide();
}
document.onkeydown = function(e) {
if (e.keyCode == 13 && e.ctrlKey) {
// 这里实现换行
document.getElementById("sendContent").value = "\n";
} else if (e.keyCode == 13) {
// 避免回车键换行
e.preventDefault();
// 下面写你的发送消息的代码
f();
}
}
function f() {
var cnt = $("#sendContent").val();
if(cnt == '')alert('内容不能为空');
if(cnt != ''){
var node = document.createElement('div');
node.className = 'sendChat';
var span = document.createElement('span');
span.innerHTML = cnt;
var arrow = document.createElement('div');
arrow.className = 'arrows';
node.appendChild(span);
node.appendChild(arrow);
$(".border-second").append($(node));
$("#sendContent").val('');
$.ajax({
data : cnt,
type : "post",
url : "CharServlet?id=" cnt,
dataType : "json",
success : function(msg) {
var node = document.createElement('div');
node.className = 'replyChat';
var span = document.createElement('span');
span.innerHTML = msg.text;
var arrow = document.createElement('div');
arrow.className = 'arrow';
node.appendChild(arrow);
node.appendChild(span);
$(".border-second").append($(node));
var boderSecondDiv = $('.border-second');
var lastChild = boderSecondDiv[0].lastChild;
var lastChildH = lastChild.offsetTop;
var h = 0;
for (var i = 0, len = lastChild.children.length; i < len; i ) {
h = lastChild.children[i].offsetHeight;
}
boderSecondDiv[0].scrollTop = lastChildH h;
},
error : function(msg) {
alert("请求失败");
}
});
}
}
</script>
</head>
<div class="frame">
<div class="border">
<div class="border-next">
<div class="people">聊天助手</div>
</div>
<div class="border-second">
<div class="chatCnt">
<div class="chatTouXiang"></div>
<div class="sendChat">
<span></span>
<div class="arrows"></div>
</div>
</div>
<div class="replyChat">
<span></span>
<div class="arrow"></div>
</div>
<br>
</div>
<div class="border-img"></div>
<textarea id="sendContent" class="border-bottom"></textarea>
<div class="button">
<button class="shut">关闭</button>
<button id="selectBtn" class="send" onclick="f()">发送</button>
</div>
</div>
</div>
</body>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持Devmax。