宋柏霖的第七个作业
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>事件</title><script>
function srk(a) {
a.style.background="#87CEFF";
}
</script>
</head>
<body>
<input type="text" onfocus="srk(this)">
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>事件</title><script>
function srk(a) {
a.style.background="#87CEFF";
}
</script>
</head>
<body>
<input type="text" onfocus="srk(this)">
</body>
</html>