abstract：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>智能客服</title>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>智能客服</title>
<style type="text/css">
.bg {
width: 450px;
height: 650px;
background-color: lightskyblue;
margin: 10px auto;
color: #333;
box-shadow: 2px 2px 2px #808080
}
h2 {
text-align: center;
margin-bottom: -10px;
}
.ft{
width: 400px;
height: 500px;
border: 4px double green;
background-color: #efefef;
margin: auto;
margin-top: 20px;
}
ul {
list-style: none;
line-height: 2em;
/*border: 1px solid red;*/
overflow: hidden;
padding: 15px;
}
table {
width: 90%;
height:80px;
margin: auto;
}
textarea{
/*width: 300px;*/
border: none;
resize: none;
background-color: lightpink;
}
button {
width: 60px;
height: 40px;
background-color: seagreen;
color: white;
border: none;
/*text-align: left;*/
}
button:hover {
cursor: pointer;
background-color: lightyellow;
}
</style>
</head>
<body>
<h2>在線客服</h2>
<div>
<div>
<ul>
<li></li>
</ul>
</div>
<table>
<tr>
<td><textarea name="text" id="" cols="50" rows="8"></textarea></td>
<td><button type="button" style="color: #000;">發(fā)送</button></td>
</tr>
</table>
</div>
<script>
let btn = document.getElementsByTagName('button')[0];
let text = document.getElementsByName('text')[0];
let list = document.getElementsByTagName('ul')[0];
let sum = 0;
//添加按鈕點(diǎn)擊事件,獲取用戶(hù)數(shù)據(jù)并推送到對(duì)話窗口中
btn.onclick = function () {
if (text.value.length === 0) {
alert('輸入為空，說(shuō)點(diǎn)什么再點(diǎn)吧');
return false;
}
let userComment = text.value;
//立即清空用戶(hù)信息區(qū)
// text.value = '';
//創(chuàng)建一個(gè)新節(jié)點(diǎn)li
let li = document.createElement('li');
li.innerHTML = userComment; //將用戶(hù)輸入的內(nèi)容添加到新節(jié)點(diǎn)中
let userPic = '<img src="inc/peter.jpg" width="30" style="border-radius:50%">'; // 設(shè)置用戶(hù)頭像
li.innerHTML = userPic + ' ' + userComment; // 將用戶(hù)頭像與用戶(hù)的聊天內(nèi)容合并
list.appendChild(li); //發(fā)送聊天內(nèi)容,實(shí)際上就是將新節(jié)點(diǎn)插入到對(duì)話列表中
sum += 1; // 聊天記錄自增1
//設(shè)置定時(shí)器,默認(rèn)2秒后會(huì)自動(dòng)回復(fù)
setTimeout(function(){
let info = [
'加微信給哥哥發(fā)照片哦',
'加個(gè)QQ嗎',
'在的呢',
'怎么了嘛',
'人家沒(méi)空啦',
];
let temp = info[Math.floor(Math.random()*5)];
//取1-5之間的一個(gè)整數(shù):Math.floor(Math.random()*6 + 1)
let reply = document.createElement('li');
let kefuPic = '<img src="inc/zly.jpg" width="30" style="border-radius:50%;">';
reply.innerHTML = kefuPic + ' ' + '<span style="color:orange">'+temp+'</span>';
list.appendChild(reply);
sum += 1;
},2000);
// 當(dāng)聊天記錄達(dá)到10條時(shí)清空窗口
if (sum > 11) {
list.innerHTML = '';
sum = 0;
}
}
</script>
</body>
</html>變量調(diào)用和字符串拼接比較懵
Correcting teacher：韋小寶Correction time：2018-11-23 17:48:02
Teacher's summary：嗯！寫(xiě)的很不錯(cuò)！前端就得多找這種案例來(lái)進(jìn)行練習(xí)哦！繼續(xù)加油吧！