jQuery filter object by value with inconsistent index

Question

I have an object similar to

var obj = { 'Earth': 1, 'Sky': 2, 'Tree': 3, 'Sand': 4 };

I am trying to filter based on value using this

$.filter(obj,function(i, value){
  return value>3;
});

However this is returning empty.

Expected output {'Sand': 4 }

Is there a way to filter by value, when the indexes of the objects cannot be consistently addressed and may vary.

Answer 1

Try something like this..

function filterObjectProperties(obj, filtercb){
    var ret = {};
    for(var p in obj)
        if(obj.hasOwnProperty(p))
            if(filtercb(obj[p]))
                ret[p] = obj[p];
    return ret;
}

var obj = { 'Earth': 1, 'Sky': 2, 'Tree': 3, 'Sand': 4 };

var newObj = filterObjectProperties(obj, function(val){
    return val > 3;
});

https://jsfiddle.net/dht2L55L/

Answer 2

This can be done without $.filter:

var obj = { 'Earth': 1, 'Sky': 2, 'Tree': 3, 'Sand': 4 };
result = {};
for (var k in obj) {
    if (obj[k] > 3) {
        result[k] = obj[k];
    }
}
console.log(result);