在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head> 
<meta charset="utf-8"> 
<title>菜鸟教程(cainiaoplay.com)</title>
</head>
<body>

<script>
var carname1="Volvo XC60";
var carname2='Volvo XC60';
var answer1='It\'s alright';
var answer2="He is called \"Johnny\"";
var answer3='He is called "Johnny"';
document.write(carname1 + "<br>")
document.write(carname2 + "<br>")
document.write(answer1 + "<br>")
document.write(answer2 + "<br>")
document.write(answer3 + "<br>")
</script>

</body>
</html>

源代码

动行结果