jQuery Ajax chatbot implementation case study

<link rel="stylesheet" href="css/reset.css" rel="external nofollow" />
<link rel="stylesheet" href="css/index.css" rel="external nofollow" />
<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">
      <!--Header area-->
      <div class="header">
        <h3>Xiao Xiang classmate</h3>
        <img src="images/person01.png" alt="icon" />
      </div>
 
      <!-- Chat content area-->
      <div class="main">
        <ul class="talk_list" style="top: 0px" id="talk_list">
          <li class="left_word">
            <img src="images/person01.png" /> <span>Hi, have you missed me recently? </span>
          </li>
          <!-- <li class="right_word">
            <img src="images/person02.png" /> <span>Hello</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>
 
      <!-- Play audio -->
      <audio src="" id="voice" autoplay style="display: none;"></audio>
 
      <!-- Message editing area-->
      <div class="footer">
          <img src="images/person02.png" alt="">
          <input type="text" placeholder="Say something..." class="input_txt" id="ipt" />
          <input type="button" value="Send" class="input_sub" id="btnSend">
      </div>
    </div>
 
    <!-- Implement page scrolling -->
    <script src="js/scroll.js"></script>
    <script src="js/chat.js"></script>

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;
}

    //Reset the scroll bar position resetui();
 
    //Bind the mouse click event to the send button$("#btnSend").on('click', function () {
        let text = $("#ipt").val().trim(); //Content to be sent// Determine whether the content to be sent is empty if (text.length <= 0) {
            return $("#ipt").val('');
        }
 
        //If the user enters chat content, append the chat content to the page for display $("#talk_list").append(`<li class="right_word"><img src="images/person02.png" /> <span>${text}</span></li>`);
        
        //Clear the input box after sending$("#ipt").val('');
        
        //Reset the scroll bar position resetui();
    }); 

    //Define a function to request data from the server -- get the data sent back by the chatbot function getMsg(text){
        $.ajax({
            method: 'GET',
            url: 'http://www.liulongbin.top:3006/api/robot',
            data: {// Submit the message sent by the user to the server spoke: text
            },
            success: function(res){
                // console.log(res);
 
                //Judge whether the request is successful data.info.text
                if(res.message === "success"){
                    //Receive the chat message returned by the server let msg = res.data.info.text;
                    // console.log(msg);
 
                    // Render the chat message returned by the server to the chat interface $("#talk_list").append(`<li class="left_word"><img src="images/person01.png" /> <span>${msg}</span></li>`);
                    //Reset the scroll bar position resetui();
                }
            }
        })
    } 

    //Convert the robot's chat content into voice function getVoice(text){
        $.ajax({
            method: 'GET',
            url: 'http://www.liulongbin.top:3006/api/synthesize',
            data: {
                text: text
            },
            success: function(res){
                // console.log(res);
 
                //Judge whether the request is successful if (res.status === 200) {
                    //Play voice$("#voice").attr("src",res.voiceUrl);
                }
            }
        })
    } 

    //Bind events to the text input box -- automatically send chat content when the Enter key is pressed and released $("#ipt").on('keyup',function(e){
        // console.log(e.keyCode); // 13
 
        //Determine whether the user pressed the Enter key if(e.keyCode === 13){
            //Call the click function of the button element to send its content $("#btnSend").click();
        }
    })