<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<title> Javascript - switch statements</title>
<script type="text/javascript">
var car="ford";
switch(car){
case "ferrari";
document.write("Italian Stalion hey?");
break;
case "porsche";
document.write("German Precision, I like that!");
break;
case "dodge";
document.write("American cars can't corner properly");
break;
default:
document.write("I don't know that car");
//no need for a break because this is the end, its going to end anyways that would be redundant
}
</script>
</head>
<body>
</body>
</html>
我认为这没有任何问题。为什么无论我是否将变量更改为保时捷或福特,都没有返回。默认类搞砸了???
在 case 语句的末尾,使用冒号 (:)不是分号 (;)。那么你的代码应该如下。
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>Javascript - switch statements</title>
<script>
var car = "ford";
switch (car){
case "ferrari":
document.write("Italian Stalion hey?");
break;
case "porsche":
document.write("German Precision, I like that!");
break;
case "dodge":
document.write("American cars can't corner properly");
break;
default:
document.write("I don't know that car");
break;
}
</script>
</head>
<body>
</body>
</html>
只需替换大小写"语句"; 大小写"语句":
您只是立即用分号终止案例陈述。
这是一个小提琴。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<title> Javascript - switch statements</title>
<script type="text/javascript">
var car="ford";
switch(car){
case "ferrari": //This line has changed
document.write("Italian Stalion hey?");
break;
case "porsche": //This line has changed
document.write("German Precision, I like that!");
break;
case "dodge": //This line has changed
document.write("American cars can't corner properly");
break;
default:
document.write("I don't know that car");
}
</script>
</head>
<body>
</body>
</html>