Javascript如何返回具有奇数的数组 [英] Javascript How to return an array with odd numbers

问题描述

我正在尝试返回数字数组

I'm trying to return an array of numbers

    function numbers(l, r) {
      // l and r are any given numbers
      var x=[];
      var i=l;
      while(x.push(i++)<r){};
      return x;        
    }


console.log(numbers(10, 19));

到目前为止，一切都很好.现在我想得到奇数.我该如何实现?

So far so good. Now I want to get the odd numbers. How can I achieve that?

推荐答案

x.filter(n => n％2)将仅保留奇数.

如果 n 是偶数，则 n％2 将返回0，并且该项目将被过滤器删除.

if n is even, n%2 will return 0 and the item will be removed by the filter.

let arr = [1,2,3,4,5,6,7,8,9,10,11,12]

let odds = arr.filter(n => n%2)

console.log(odds)

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