如何统计JS中的重复对象

function findDuplicateObjects(objects) {
  var duplicates = [];
  var uniqueStrings = {};

  for (var i = 0; i < objects.length; i++) {
    var objString = JSON.stringify(objects[i]);

    if (uniqueStrings[objString]) {
      duplicates.push(objects[i]);
    } else {
      uniqueStrings[objString] = true;
    }
  }

  return duplicates;
}

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

var duplicateObjects = findDuplicateObjects(objects);
console.log(duplicateObjects);

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