在 JavaScript 中查找数组中最接近的值

javascriptweb developmentfront end technologyobject oriented programming更新于 2026/1/24 14:04:17

我们需要编写一个 JavaScript 函数，该函数将数字数组作为第一个参数，将数字作为第二个参数。然后，该函数应从数组中返回最接近作为第二个参数提供给函数的数字的数字。

示例

其代码为 −

const arr = [3, 56, 56, 23, 7, 76, -2, 345, 45, 76, 3];
const num = 37
const findClosest = (arr, num) => {
   const creds = arr.reduce((acc, val, ind) => {
      let { diff, index } = acc;
      const difference = Math.abs(val - num);
      if(difference < diff){
         diff = difference;
         index = ind;
      };
      return { diff, index };
   }, {
      diff: Infinity,
      index: -1
   });
   return arr[creds.index];
};
console.log(findClosest(arr, num));