面试总结

    let arr = [1.2,3,3,4,4,5,6,56,12,12];
    const unque = arr=>{
              let newArr = [];
                arr.forEach(element => {
                    if(newArr.indexOf(element) < 0){
                        newArr.push(element);
                    }
                });
                return newArr;
            }
      console.log(unque(arr));