将当前数组值与下一个数组值进行比较的Javascript ES6数组方法

const arr = [1, 2, 3, 4, 5];
const comparedArr = arr.map((currentValue, index, array) => {
  if (index < array.length - 1) {
    const nextValue = array[index + 1];
    // 进行比较操作
    return currentValue === nextValue;
  }
  return false;
});
console.log(comparedArr); // [false, false, false, false, false]

const arr = [1, 2, 3, 4, 5];
const comparedResult = arr.reduce((acc, currentValue, index, array) => {
  if (index < array.length - 1) {
    const nextValue = array[index + 1];
    // 进行比较操作
    const compared = currentValue === nextValue;
    return acc && compared;
  }
  return acc;
}, true);
console.log(comparedResult); // false

const arr = [1, 2, 3, 4, 5];
let comparedResult = true;
arr.forEach((currentValue, index, array) => {
  if (index < array.length - 1) {
    const nextValue = array[index + 1];
    // 进行比较操作
    comparedResult = comparedResult && (currentValue === nextValue);
  }
});
console.log(comparedResult); // false