switch
语句的case
省略了break
语句,则会执行以下case
语句,直到遇到break
。如果您有多个具有相同输出的输入,则可以在switch
语句中表示它们,如下所示: switch(val){1,2和3的情况都会产生相同的结果。
情况1:
案例2:
案例3:
result =“1,2或3”;
打破;
案例4:
result =“4 alone”;
}
answer
: 1-3
- “低” 4-6
- “中” 7-9
- “高” 注 case
语句。 sequentialSizes(1)
应返回“Low”
testString: assert(sequentialSizes(1) === "Low");
- text: sequentialSizes(2)
应该返回“Low”
testString: assert(sequentialSizes(2) === "Low");
- text: sequentialSizes(3)
应返回“Low”
testString: assert(sequentialSizes(3) === "Low");
- text: sequentialSizes(4)
应返回“Mid”
testString: assert(sequentialSizes(4) === "Mid");
- text: sequentialSizes(5)
应返回“Mid”
testString: assert(sequentialSizes(5) === "Mid");
- text: sequentialSizes(6)
应返回“Mid”
testString: assert(sequentialSizes(6) === "Mid");
- text: sequentialSizes(7)
应该返回“High”
testString: assert(sequentialSizes(7) === "High");
- text: sequentialSizes(8)
应该返回“High”
testString: assert(sequentialSizes(8) === "High");
- text: sequentialSizes(9)
应该返回“High”
testString: assert(sequentialSizes(9) === "High");
- text: 您不应该使用任何if
或else
语句
testString: assert(!/else/g.test(code) || !/if/g.test(code));
- text: 你应该有九个case
陈述
testString: assert(code.match(/case/g).length === 9);
```