サマリー：<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0">&
<!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>Javascript控制div的樣式</title>
<style>
#box{
width:100px;
height:100px;
background-color:lightblue;
}
</style>
</head>
<body>
<div id="box"></div>
<script>
document.getElementById('box').onclick = function() {
this.style.backgroundColor = 'orange';
this.style.borderRadius = '50%';
}
</script>
</body>
</html>
添削の先生：天蓬老師添削時間：2019-01-24 17:23:04
先生のまとめ：backgroundColor, 對于這樣的復合樣式, 注意語法 ,如果不想用屬性方式設置, 可以用setAttribute()