javascript - 从数组列表更改为对象javascript

Question

我的代码有问题，因为当我增加数组中的元素数量时，它只运行最后添加的 3 个元素，而不是完整列表 我不知道我的代码有什么问题。请帮忙!

var array = [
  ['make', 'Ford'],
  ['model', 'Mustang'],
  ['year', '1964'],
  ['make', 'Honda'],
  ['model', 'CRV'],
  ['year', '2000']
];

function fromListToObject(array) {
  var obj = Object.create(null); // empty container for my object
  for (var i = 0; i < array.length; i++) { //declare the 1st array loop
    var arr1 = array[i]; //decleare the nested array
    obj[arr1[0]] = arr1[1]; //1st item = 2nd item in the nested array
  }
  return obj;
}

var result = fromListToObject(array);
console.log(result);

Answer 1

您必须将数据放入一个对象数组中。我会将原始数组分块成当时键大小的 block ，然后处理这些 block 并为它们创建单独的对象。请注意，如果原始数组包含不相等的 block (例如缺少键)，下面将失败，因此您需要为此添加检查或真正确保原始数组始终正确:

let array = [
  ['make', 'Ford'],
  ['model', 'Mustang'],
  ['year', '1964'],
  ['make', 'Honda'],
  ['model', 'CRV'],
  ['year', '2000']
];

function toArrOfObj(array) {
  let keys = [...new Map(array).keys()];
  let i, j, res = [], chunk = keys.length;
  for (i = 0, j = array.length; i < j; i += chunk) {
    let tmp = array.slice(i, i + chunk);
    let obj = {};
    for (let [k, v] of tmp) {
      obj[k] = v;
    }
    res.push(obj);
  }
  return res;
}

console.log(toArrOfObj(array));