let arr = [{names:1,aee:123},{names:1,aee:15456423},{names:2,aee:4658456}]; let tempObj = {}; let isDuplicate = false; for(let i=0; i<arr.length; i++){ if(tempObj[arr[i].names]){ isDuplicate = true; break; } tempObj[arr[i].names] = true; } if(isDuplicate){ console.log('names属性存在重复'); }else{ console.log('names属性不存在重复'); } 代码优化

可以将数组的遍历和判断是否重复的逻辑封装成一个函数，提高代码的可复用性和可维护性。

以下是示例代码：

function isDuplicate(arr, propName){
  let tempObj = {};
  for(let i=0; i<arr.length; i++){
    if(tempObj[arr[i][propName]]){
      return true;
    }
    tempObj[arr[i][propName]] = true;
  }
  return false;
}

let arr = [{names:1,aee:123},{names:1,aee:15456423},{names:2,aee:4658456}];
if(isDuplicate(arr, 'names')){
  console.log('names属性存在重复');
}else{
  console.log('names属性不存在重复');
}

输出结果为：names属性存在重复