删除数组中某个属性值相同的对象元素

删除数组中某个属性值相同的对象元素
js数组中含有相同的属性值对象

let dataList  = [
    {
    
    
        "taskId": 140,
        "activityId": 123,
        "activityName": "环球港邮轮酒店",
      
    },
    {
    
    
        "taskId": 129,
        "activityId": 114,
        "activityName": "东方盐湖城·道天下景区",
       
    },
    {
    
    
        "taskId": 134,
        "activityId": 120,
        "activityName": "融创海世界",
       
    },
    {
    
    
        "taskId": 135,
        "activityId": 121,
        "activityName": "恐龙谷温泉接待中心",
       
    },
    {
    
    
        "taskId": 140,
        "activityId": 123,
        "activityName": "环球港邮轮酒店",
      
    },
     {
    
    
        "taskId": 129,
        "activityId": 114,
        "activityName": "东方盐湖城·道天下景区",
       
    },
]

处理方法

let result = [];
result = dataList.filter((item, index, origin) => 
	index === origin.findIndex(itemInner => {
    
    
	return itemInner.taskId === item.taskId
	}
))