There is a code that displays the sum of the numbers in the array, without the largest and smallest value. Can't check input value to undefined.

I tried to check this way:

if (typeof something === "undefined") { alert("something is undefined"); }

But I do not pass the tests, I need to, if undefined then just output 0.

 function getMaxOfArray(numArray) { return Math.max.apply(null, numArray); } function getMinOfArray(numArray) { return Math.min.apply(null, numArray); } function sumArray(numbers){ var maxPlusMin = getMaxOfArray(numbers) + getMinOfArray(numbers); if (numbers && isNaN(numbers) & (numbers.length != 0) ) { return numbers.reduce(function(sum, n){ return n + sum; }, -maxPlusMin ); } else { numbers = 0; } } alert(sumArray([ 1, 2, 3, 4, 10 ]));

  • one
    Well, return numbers; to put? Or immediately return 0; ? And for example, change & ? - Visman

1 answer 1

@Visman in the comments pointed to my shortcoming:

Well, return numbers; to put? Or immediately return 0 ;? And for example, change & & &?

So everything works as it should:

 function getMaxOfArray(numArray) { return Math.max.apply(null, numArray); } function getMinOfArray(numArray) { return Math.min.apply(null, numArray); } function sumArray(numbers){ var maxPlusMin = getMaxOfArray(numbers) + getMinOfArray(numbers); if (numbers && isNaN(numbers) && (numbers.length != 0)) { return numbers.reduce(function(sum, n){ return n + sum; }, -maxPlusMin ); } else { return numbers = 0; } } alert (sumArray([ 6, 2, 1, 8, 10 ])); alert (sumArray([]));