js 数组变对象

const array = ['apple', 'banana', 'cherry'];
const obj = array.reduce((accumulator, currentValue) => {
  accumulator[currentValue] = true;
  return accumulator;
}, {});

console.log(obj);
// 输出: { apple: true, banana: true, cherry: true }

const array = ['apple', 'banana', 'cherry'];
const obj = array.reduce((accumulator, currentValue, index) => {
  accumulator[index] = currentValue;
  return accumulator;
}, {});

console.log(obj);
// 输出: { '0': 'apple', '1': 'banana', '2': 'cherry' }

const array = ['apple', 'banana', 'cherry'];
const obj = Object.fromEntries(array.map((item, index) => [item, index]));

console.log(obj);
// 输出: { apple: 0, banana: 1, cherry: 2 }

const array = ['apple', 'banana', 'cherry'];
const obj = {};

array.forEach((item, index) => {
  obj[item] = index;
});

console.log(obj);
// 输出: { apple: 0, banana: 1, cherry: 2 }