如何实现数组去重？

Question

arr=[{'name':'json'},{"idname":'tom'},{'idname':'bim'},{'name':'json'}];function removearr(){arr1=[];}//不会往下做了；求教大神帮忙

Answer 1

 var result = {};var arr1 = [];

for(let i=0;i<arr.length;i++){

if(result[JSON.stringify(arr[i])]){

    

  }else{

    result[JSON.stringify(arr[i])] = true;

    arr1.push(arr[i]);

  }

}

 console.log(arr1);

`