js数组去重及数组对象去重

var arr = [1,2,3,5,3,4,5,6,6,"test","test",true];

var person = [
  {
    name:"孙悟空",
    weapon:"如意金箍棒",
    experience:"大闹天宫、西天取经",
    post:"斗战胜佛、齐天大圣"
  },
  {
    name:"孙悟空",
    weapon:"如意金箍棒",
    experience:"大闹天宫、西天取经",
    post:"斗战胜佛、齐天大圣"
  },
  {
    name:"孙悟空",
    weapon:"如意金箍棒",
    experience:"大闹天宫、西天取经",
    post:"斗战胜佛、齐天大圣"
  },
  {
    name:"孙悟空",
    weapon:"如意金箍棒",
    experience:"大闹天宫、西天取经",
    post:"斗战胜佛、齐天大圣"
  },
  {
    name:"孙悟空",
    weapon:"如意金箍棒",
    experience:"大闹天宫、西天取经",
    post:"斗战胜佛、齐天大圣"
  }
];
//ES5原生去重办法
function Es5duplicate(arr,type){
  var newArr = [];
  var tArr = [];
  if(arr.length == 0){
    return arr;
  }else{
    if(type){
      for(var i = 0; i < arr.length;i++){
        if(!tArr[arr[i][type]]){
          newArr.push(arr[i]);
          tArr[arr[i][type]] = true;
        }
      }
      return newArr;
    }else{
      for(var i = 0; i < arr.length;i++){
        if(!tArr[arr[i]]){
          newArr.push(arr[i]);
          tArr[arr[i]] = true;
        }
      }
      return newArr;
    }
  }
}
console.log('ES5去重',Es5duplicate(arr));
console.log('ES5去重',Es5duplicate(person,"name"));
//Es6 + ES5去重办法
function Es6duplicate(arr,type){
  if(arr.length == 0){
    return arr;
  }else{
    if(type){
      var obj = {}
      var newArr = arr.reduce((cur,next) => {
        obj[next.name] ? "" : obj[next.name] = true && cur.push(next);
        return cur;
      },[])
      return newArr;
    }else{
      return Array.from(new Set(arr));
    }
  }
}
console.log('ES6去重',Es6duplicate(arr));
console.log('ES6去重',Es6duplicate(person,"name"));
posted @ 2021-09-29 15:11  雪莉06  阅读(147)  评论(0)    收藏  举报