在JS 数组中获取额外的值

const array = [1, 2, 3, 4, 5];
const extraValues = [];
for (let i = 0; i < array.length; i++) {
  if (array[i] > 3) {
    extraValues.push(array[i]);
  }
}
console.log(extraValues); // 输出[4, 5]

const array = [1, 2, 3, 4, 5];
const extraValues = array.filter(value => value > 3);
console.log(extraValues); // 输出[4, 5]

const array = [1, 2, 3, 4, 5];
const extraValues = array.map(value => {
  if (value > 3) {
    return value;
  }
});
console.log(extraValues); // 输出[undefined, undefined, undefined, 4, 5]

const array = [1, 2, 3, 4, 5];
const extraValues = array.reduce((accumulator, value) => {
  if (value > 3) {
    accumulator.push(value);
  }
  return accumulator;
}, []);
console.log(extraValues); // 输出[4, 5]