仅推送数组javscript中的uniqure元素

function uniqueArray(arr) {
  return [...new Set(arr)];
}

const arrayWithDuplicates = [1, 2, 2, 3, 4, 4, 5];
const uniqueArrayResult = uniqueArray(arrayWithDuplicates);
console.log(uniqueArrayResult); // 输出: [1, 2, 3, 4, 5]

function uniqueArray(arr) {
  return arr.filter((item, index) => arr.indexOf(item) === index);
}

const arrayWithDuplicates = [1, 2, 2, 3, 4, 4, 5];
const uniqueArrayResult = uniqueArray(arrayWithDuplicates);
console.log(uniqueArrayResult); // 输出: [1, 2, 3, 4, 5]

function uniqueArray(arr) {
  return arr.reduce((accumulator, currentValue) => {
    if (!accumulator.includes(currentValue)) {
      accumulator.push(currentValue);
    }
    return accumulator;
  }, []);
}

const arrayWithDuplicates = [1, 2, 2, 3, 4, 4, 5];
const uniqueArrayResult = uniqueArray(arrayWithDuplicates);
console.log(uniqueArrayResult); // 输出: [1, 2, 3, 4, 5]