第一个事件动画和总结
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>事件</title>
</head>
<body>
姓名：<input type="text" onfocus="myfovus(this)">
<br />
<br />
<div onclick="myclick(this)" style="width: 100px;height: 100px;border: 1px solid #ccc;"></div>
</body>
<script>
function myfovus(x) {
x.style.background="red"
}
function myclick(y) {
y.style.borderRadius="50px"
}
</script>
</html>