DOM操作实战热身
<!DOCTYPE html>
<html>
<head>
<title>实战热身</title>
</head>
<body>
<input type="text" name="info">
<button>提交</button>
<ul></ul>
<script type="text/javascript">
let input = document.getElementsByName('info')[0];
let button = document.getElementsByTagName('button')[0];
let ul = document.getElementsByTagName('ul')[0];
button.onclick = function() {
let li = document.createElement('li');
li.innerHTML = input.value;
ul.appendChild(li);
input.value = '';
}
</script>
</body>
</html>