如何使用切换大小写在javascript中找到两个数字之间的最大值？

Question

I am trying to run with this code block but it does not work

Switch (num1>num2) {
case 0:
  document.write(num2);
  break;
case 1:
  document.write(num1);
 break;
}

Answer 1

Logical operations return boolean on Javascript.

document.write writes HTML expressions or JavaScript code to a document, console.log prints the result on the browser console.

   switch (num1>num2) {
      case true:
          console.log(num1);
       break;
       case false:
           console.log(num2);
       break;
    }

Answer 2

switch (with a lower case s) uses strict comparison === so the value of a boolean like 11 > 10 will never === 0 or 1 .

You need to test for the boolean if you want to do it this way:

 let num1 = 10 let num2 = 20 switch (num1>num2) { case false: console.log(num2); break; case true: console.log(num1); break; } 

If for some reason you were given numbers you could explicitly cast them to booleans with something like case !!0: but that starts to get a little hard on the eyes.

If your goal is to find the max of two numbers, Math.max(num1, num2) is hard to beat for readability.

Answer 3

You would just use the greater than / less than inside of the switch statement.

 var x = 10; var y = 20; switch(true) { case (x > y): console.log(x); break; case ( y > x): console.log(y); break; } 

Answer 4

You could use something simple as Math.max(5, 10) ;

 const numOne = 5; const numTwo = 10; console.log(`Bigger number is: ${Math.max(numOne, numTwo)}`); 

Or if you absolutely 'have to' use switch statement , you can try something like this:

 const numOne = 5; const numTwo = 10; switch(true) { case (numOne > numTwo): console.log(`Bigger number is ${numOne}`); break; case (numOne < numTwo): console.log(`Bigger number is ${numTwo}`); break; case (numOne === numTwo): console.log(`${numOne} is equal to ${numTwo}`); break; default: console.log(false, '-> Something went wrong'); }