abstract：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>仿机器人聊天</title> </head> <body> <input type="text"
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>仿机器人聊天</title>
</head>
<body>
<input type="text" name="info">
<button name="btn">提交</button>
<ul>
</ul>
<script type="text/javascript">
//提取input标签
let info = document.getElementsByName('info')[0];
//控制台中输出
console.log(info)
//提取button标签
let btn = document.getElementsByName('btn').item(0);
//控制台中输出btn
console.log(btn);
//提取ul标签
let ul = document.getElementsByTagName('ul').item(0);
//控制台中输出查看ul
console.log(ul);
btn.onclick = function(){
// 创建列表项li
let li = document.createElement('li');
// 内容写入li中
li.innerHTML = info.value;
// 写入li中内容进入ul列表中
ul.appendChild(li);
// info 输入框的内容清空
info.value = null;
info.value = '';
}
</script>
</body>
</html>
Correcting teacher：天蓬老师Correction time：2018-12-20 14:10:18
Teacher's summary：这个案例,是考察对于dom元素的创建与内容填充
