Javascript 在 switch 中嵌套 if/else 是否有效？
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Is it valid JavaScript to nest an if/else in a switch?
提问by Ben
Is this valid?
这是有效的吗？
switch(foo) {
case 'bar':
if(raz == 'something') {
// execute
} else {
// do something else
}
break;
...
default:
// yada yada
}
回答by karim79
Yes, it is perfectly valid. Have you tried it?
是的，它完全有效。你试过吗？
回答by Jeffrey Roosendaal
You can combine a switchand an ifin a better way, if you really have to:
如果您真的必须这样做，您可以以更好的方式组合 aswitch和 an if：
switch (true) {
case (foo === 'bar' && raz === 'something'):
// execute
break;
case (foo === 'bar'):
// do something else
break;
default:
// yada yada
}
Sorry to revive such an old post, but it may help people who came here looking how to combine or nest a switchand an ifstatement.
很抱歉恢复这样的旧帖子，但它可能会帮助来这里寻找如何组合或嵌套 aswitch和if语句的人。
回答by samehanwar
and you can also use ternary ifwrapped inside a returnstatement
你也可以ternary if在return语句中使用wrapped
switch(foo) {
case 'bar':
return(
(raz == 'something') ?
// excute
:
// do something else
)
break;
...
default:
// yada yada
}
