如果数组中的对象具有相同的值，则将它们合并到一个对象中

function mergeObjects(arr) {
  var mergedObj = {};

  arr.forEach(function(obj) {
    var key = Object.keys(obj)[0];
    var value = obj[key];

    if (mergedObj.hasOwnProperty(key)) {
      mergedObj[key] = mergeValues(mergedObj[key], value);
    } else {
      mergedObj[key] = value;
    }
  });

  return mergedObj;
}

function mergeValues(existingValue, newValue) {
  if (Array.isArray(existingValue)) {
    return existingValue.concat(newValue);
  } else if (typeof existingValue === 'object' && typeof newValue === 'object') {
    return Object.assign({}, existingValue, newValue);
  } else {
    return [existingValue, newValue];
  }
}

var arr = [
  { name: 'John' },
  { age: 25 },
  { name: 'Jane' },
  { age: 30 },
  { name: 'John', age: 35 }
];

var merged = mergeObjects(arr);
console.log(merged);

{ name: [ 'John', 'Jane' ], age: [ 25, 30, 35 ] }