如何获取数组中最常见的值:JavaScript?

javascriptweb developmentfront end technologyobject oriented programming

我们需要编写一个 JavaScript 函数，该函数接受具有重复值的文字数组。我们的函数应返回数组中最常见元素的数组(如果两个或多个元素出现的次数相同，则数组应包含所有这些元素)。

示例

其代码为 −

const arr1 = ["a", "c", "a", "b", "d", "e", "f"];
const arr2 = ["a", "c", "a", "c", "d", "e", "f"];
const getMostCommon = arr => {
   const count = {};
   let res = [];
   arr.forEach(el => {
      count[el] = (count[el] || 0) + 1;
   });
   res = Object.keys(count).reduce((acc, val, ind) => {
      if (!ind || count[val] > count[acc[0]]) {
         return [val];
      };
      if (count[val] === count[acc[0]]) {
         acc.push(val);
      };
      return acc;
   }, []);
   return res;
}
console.log(getMostCommon(arr1));
console.log(getMostCommon(arr2));