关布尔。

代码示例

15
0

javascript肘变

var thing = true; //try changing this to false
thing = !thing; //the variable will go from true to false, or from false to true
1
0

稿关测试每种情况下

switch(true) { 
   case if(constant1 == 1): { 
      //statements; 
      break; 
   } 
   case if(constant2 == 2): { 
      //statements; 
      break; 
   } 
   default: { 
      //statements; 
      break; 
   } 
} 

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