我的作业 谢谢老师
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>我的作业</title>
</head>
<body>
<script>
var a=3,b=4;
var c='php中文网',d="Hello!php";
document.write("a="+a+'<br>'+"a+b="+(a+b));
document.write('<br>'+c+d);
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>我的作业</title>
</head>
<body>
<script>
var a=3,b=4;
var c='php中文网',d="Hello!php";
document.write("a="+a+'<br>'+"a+b="+(a+b));
document.write('<br>'+c+d);
</script>
</body>
</html>