JS如何实现JSON去重？

Question

例如有这样一个JSON，想要去掉重复项。{"i1":"1231", "i2":"9387", "i3":"68433", "i4":"1231", "i5":"43566"}i1和i4的值相等,重复了,如何去重呢?

Answer 1

跟数组一样的

var _json = {"i1":"1231", "i2":"9387", "i3":"68433", "i4":"1231", "i5":"43566"};

var  newJson = {};

for(var key in _json){

  if(newJson[_json[key]]){

    delete _json[key];

  }else{

    newJson[_json[key]] = true;

  }

}

console.log(_json)