如何确保只能传递字符串和数字 arguments？

Question

How can I check to see if my arguments are strings or numbers only?

Task 4 - find the smallest number in a list. Allow any number of arguments to be passed to the function. Allow both String and Number arguments to be passed, but throw an error if any other type is passed to the function (eg, Boolean, Date, etc.). If the list is empty (nothing passed to the function), return Number.MIN_VALUE,

<script>
 highAndLow =(... numbers) => {

 if(numbers.length<=0){

 return Number.MIN_VALUE;
}
 if (typeof numbers !== 'string' || (isNaN(numbers)===true)){
  throw new Error('Whoops!, Only String and Numbers allowed');
  }else{

 numbers = numbers + '';
  var smallestElement = numbers[0];
  numbers = numbers.split(' ');
   for (var i = 0; i < numbers.length; i++) {
    if (+numbers[i] < +smallestElement) {
      smallestElement = numbers[i];
     }

     }


   }


    return ` ${smallestElement}`;
     };

 console.log(highAndLow('4 5 29 54 4 0 -214 542 -64 1 -3 6 12')); 
   alert(highAndLow('4 5 29 54 4 0 -214 542 -64 1 -3 6 12'));
 </script>

Answer 1

You need to do the type checking inside the loop. typeof numbers[i] !== 'string' || (isNaN(numbers[i])===true