js JSON数组去重，js JSON去重

//JSON数组去重
function arrDistinct(arr){
    var arrw=[];
    var arrw2=[];
    for ( var i = 0; i <arr.length; i++){
        var jsons={};
        if (arrw2.indexOf(arr[i].data)==-1){
            arrw2.push(arr[i].data);
            jsons.data=arr[i].data;
            jsons.ids=[];
            jsons.ids.push(arr[i].id);
            arrw.push(jsons)
        }else{
            var x=arrw2.indexOf(arr[i].data)
            var aa=arrw[x];
            aa.ids.push(arr[i].id)
        }
    }
    return arrw;
}

//JSON相同值去重
function  jsValDistinct(_json){
    //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;
        }
    }
    return _json
}

//按照key去重，舍弃掉其中一个
function  jsKeyDistinct(_json){
    // _json = {"i1":"1231", "i1":"9387", "i3":"68433", "i4":"1231", "i5":"43566"};
    var  newJson = {};
    var keyArr = [];
    for(var key in _json){
        if (keyArr.includes(key)){
            continue
        }else{
            newJson[key] = _json[key];
        }
    }
    return _json
}

 

function  jsValDistinct(_json){
    //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;
}
    }
    return _json
}