通过id - javascript合并数组中的多个对象

function mergeObjectsById(objects) {
  var mergedArray = [];

  objects.forEach(function(obj) {
    var existingObj = mergedArray.find(function(item) {
      return item.id === obj.id;
    });

    if (existingObj) {
      Object.assign(existingObj, obj);
    } else {
      mergedArray.push(obj);
    }
  });

  return mergedArray;
}

// 示例用法
var objects = [
  { id: 1, name: 'Object 1', value: 10 },
  { id: 2, name: 'Object 2', value: 20 },
  { id: 1, name: 'Object 1 Updated', description: 'Updated object' }
];

var mergedObjects = mergeObjectsById(objects);
console.log(mergedObjects);

[
  { id: 1, name: 'Object 1 Updated', value: 10, description: 'Updated object' },
  { id: 2, name: 'Object 2', value: 20 }
]