实现步骤:
1.梳理案例的代码结构
- a.梳理页面的UI布局
- b.将业务代码抽离到chat.js中
- c.了解resetui()函数的作用:重置滚动条的位置
<link rel="stylesheet" href="css/reset.css" />
<link rel="stylesheet" href="css/index.css" />
<script src="js/jquery-1.12.4.min.js"></script>
<script src="js/jquery-ui.min.js"></script>
<script src="js/jquery.mousewheel.js"></script>
<div class="wrap">
<!--头部区域-->
<div class="header">
<h3>小向同学</h3>
<img src="images/person01.png" alt="icon" />
</div>
<!-- 聊天内容区域 -->
<div class="main">
<ul class="talk_list" style="top: 0px" id="talk_list">
<li class="left_word">
<img src="images/person01.png" /> <span>嗨,最近想我没有?</span>
</li>
<!-- <li class="right_word">
<img src="images/person02.png" /> <span>你好哦</span>
</li> -->
</ul>
<div class="drag_bar" style="display: none;">
<div
class="drager ui-draggable ui-draggable-handle"
style="display: none; height: 412.628px;"
></div>
</div>
</div>
<!-- 播放语音 -->
<audio src="" id="voice" autoplay style="display: none;"></audio>
<!-- 消息编辑区域 -->
<div class="footer">
<img src="images/person02.png" alt="">
<input type="text" placeholder="说点什么吧..." class="input_txt" id="ipt" />
<input type="button" value="发 送" class="input_sub" id="btnSend">
</div>
</div>
<!-- 实现页面滚动 -->
<script src="js/scroll.js"></script>
<script src="js/chat.js"></script>
index.css,
body {
font-family: 'Microsoft YaHei';
}
.wrap {
position: fixed;
width: 450px;
left: 50%;
margin-left: -225px;
top: 20px;
bottom: 20px;
border: 1px solid #ebebeb;
background-color: #fff;
border-radius: 10px;
box-shadow: 0 0 30px rgba(0, 0, 0, 0.1);
overflow: hidden;
}
.header {
height: 55px;
background: linear-gradient(90deg, rgba(246, 60, 47, 0.6), rgba(128, 58, 242, 0.6));
overflow: hidden;
}
.header h3 {
color: #faf3fc;
line-height: 55px;
font-weight: normal;
float: left;
letter-spacing: 2px;
margin-left: 25px;
font-size: 18px;
text-shadow: 0px 0px 5px #944846;
}
.header img {
float: right;
margin: 7px 25px 0 0;
border-radius: 20px;
box-shadow: 0 0 5px #f7f2fe;
}
.main {
position: absolute;
left: 0;
right: 0;
top: 55px;
bottom: 55px;
background-color: #f4f3f3;
box-sizing: border-box;
padding: 10px 0;
overflow: hidden;
}
.talk_list {
position: absolute;
width: 100%;
left: 0px;
top: 0px;
}
.talk_list li {
overflow: hidden;
margin: 20px 0px 30px;
}
.talk_list .left_word img {
float: left;
margin-left: 20px;
}
.talk_list .left_word span {
float: left;
background-color: #fe9697;
padding: 10px 15px;
max-width: 290px;
border-radius: 12px;
font-size: 16px;
color: #fff;
margin-left: 13px;
position: relative;
line-height: 24px;
}
.talk_list .left_word span:before {
content: '';
position: absolute;
left: -8px;
top: 3px;
width: 13px;
height: 12px;
background: url('../images/corner01.png') no-repeat;
}
.talk_list .right_word img {
float: right;
margin-right: 20px;
}
.talk_list .right_word span {
float: right;
background-color: #fff;
padding: 10px 15px;
max-width: 290px;
border-radius: 12px;
font-size: 16px;
color: #000;
margin-right: 13px;
position: relative;
line-height: 24px;
}
.talk_list .right_word span:before {
content: '';
position: absolute;
right: -8px;
top: 3px;
width: 13px;
height: 12px;
background: url('../images/corner02.png') no-repeat;
}
.drag_bar {
position: absolute;
right: 0px;
top: 0px;
background-color: #fff;
height: 100%;
width: 6px;
box-sizing: border-box;
border-bottom: 1px solid #f4f3f3;
}
.drager {
position: absolute;
left: 0px;
top: 0px;
background-color: #cdcdcd;
height: 100px;
width: 6px;
border-radius: 3px;
cursor: pointer;
}
.footer {
width: 100%;
height: 55px;
left: 0px;
bottom: 0px;
background-color: #fff;
position: absolute;
}
.footer img {
float: left;
margin: 8px 0 0 20px;
}
.input_txt {
float: left;
width: 270px;
height: 37px;
border: 0px;
background-color: #f4f3f3;
margin: 9px 0 0 20px;
border-radius: 8px;
padding: 0px;
outline: none;
text-indent: 15px;
}
.input_sub {
float: left;
width: 70px;
height: 37px;
border: 0px;
background-color: #fe9697;
margin: 9px 0 0 15px;
border-radius: 8px;
padding: 0px;
outline: none;
color: #fff;
cursor: pointer;
}
效果如下:
2.将用户输入的内容渲染到聊天窗口
chat.js,
//重置滚动条位置
resetui();
//为发送按钮绑定鼠标点击事件
$("#btnSend").on('click', function () {
let text = $("#ipt").val().trim(); //要发送的内容
// 判断发送的内容是是否为空
if (text.length <= 0) {
return $("#ipt").val('');
}
//如果用户输入了聊天内容,则将聊天内容追加到页面上显示
$("#talk_list").append(`<li class="right_word"><img src="images/person02.png" /> <span>${text}</span></li>`);
//发送完后清空输入框
$("#ipt").val('');
//重置滚动条位置
resetui();
});
3.发起请求获取聊天消息
chat.js,
//定义函数向服务器请求数据--获取聊天机器人发送回来的数据
function getMsg(text){
$.ajax({
method: 'GET',
url: 'http://www.liulongbin.top:3006/api/robot',
data: {// 将用户放送的消息提交到服务器
spoken: text
},
success: function(res){
// console.log(res);
//判断是否请求成功 data.info.text
if(res.message === "success"){
//接收服务器返回的聊天消息
let msg = res.data.info.text;
// console.log(msg);
//将服务器返回的聊天消息渲染到聊天界面
$("#talk_list").append(`<li class="left_word"><img src="images/person01.png" /> <span>${msg}</span></li>`);
//重置滚动条位置
resetui();
}
}
})
}
4.将机器人的聊天内容转为语音
5.通过<audio>播放语音
//将机器人的聊天内容转换为语音
function getVoice(text){
$.ajax({
method: 'GET',
url: 'http://www.liulongbin.top:3006/api/synthesize',
data: {
text: text
},
success: function(res){
// console.log(res);
//判断是否请求成功
if(res.status === 200){
//播放语音
$("#voice").attr("src",res.voiceUrl);
}
}
})
}
6.使用回车键发送消息
//给文本输入框绑定事件--当按下并抬起回车键时自动发送聊天内容
$("#ipt").on('keyup',function(e){
// console.log(e.keyCode); // 13
//判断用户是否按下的是回车键
if(e.keyCode === 13){
//调用按钮元素的 click 函数,将其内容发送出去
$("#btnSend").click();
}
})