数字范围为 1-5 的 JavaScript switch case

Question

我可以制作一个 switch case 来查找特定范围内的数字吗？如1-4示例:

 switch(3.43) {
      case '1,2,3,4,5' :
      console.log('its 3.43!')
      break;    
      case '6-10' :
      console.log('its not 3!')
      break;  
  }

Answer 1

使用 if else

<script type="text/javascript">

function checkNumber () {
var n = //get value
var entered = "You entered a number between"; 

if (n >= 1 && n < 10)                   
  {alert(entered + " 0 and 10")}
else if (n >= 10 && n < 20)
  {alert(entered + " 9 and 20")}
else if (n >= 20 && n < 30)
  {alert(entered + " 19 and 30")}
else if (n >= 30 && n < 40)
  {alert(entered + " 29 and 40")}
else if (n >= 40 && n <= 100)
  {alert(entered + " 39 and 100")}
else if (n < 1 || n > 100)
  {alert("You entered a number less than 1 or greater than 100")}
else
  {alert("You did not enter a number!")}
}

</script>