合并具有相同键值的JavaScript对象并对其进行计数

function mergeAndCountObjects(objects) {
  var result = {};
  
  for (var i = 0; i < objects.length; i++) {
    var obj = objects[i];
    var key = JSON.stringify(obj); // 将对象转换为字符串作为键值
    
    if (result[key]) {
      result[key] += 1;
    } else {
      result[key] = 1;
    }
  }
  
  return result;
}

// 示例用法
var objects = [
  { name: 'Alice', age: 25 },
  { name: 'Bob', age: 30 },
  { name: 'Alice', age: 25 },
  { name: 'Charlie', age: 35 }
];

var merged = mergeAndCountObjects(objects);
console.log(merged);

{
  '{"name":"Alice","age":25}': 2,
  '{"name":"Bob","age":30}': 1,
  '{"name":"Charlie","age":35}': 1
}