document.write()

index.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>New Page</title>
</head>
<body>
<script>
var val=5;
document.write('Hello World!');
document.write("Привет Мир!");
document.write(val);
document.write(val+10);
document.write(val+' Hello World! '+10);
</script>
</body>
</html>

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>New Page</title>
</head>
<body>
<script>
var val=5;
document.write('Hello World!');
document.write("Привет Мир!");
document.write(val);
document.write(val+10);
document.write(val+' Hello World! '+10);
</script>
</body>
</html>