javascript - Remove empty brackets from a JSON object -


i remove matching elements {}, , {} json string.

input : "test": [{},{},{},{},{},{},{}],

output : "test": [],

to so, tried : 

var jsonconfig = json.stringify(jsonobj); var jsonfinal = jsonconfig.replace(/[{},]/g, ''); // remove global var jsonfinal = jsonconfig.replace(/[{},]/, ''); // remove brackets  console.log(jsonfinal);

and many more.

how can remove set of elements json without impacting other brackets , comma?

do not attempt modify json string manipulation functions.

always parse json, transform data, , re-stringify json.

edit: answer addresses comment input data object contain other potential keys should present in output.

// couple of procedures transform data const isemptyobject = x => object.keys(x).length === 0; const not = x => ! x; const comp = f => g => x => f (g (x)); const remove = f => xs => xs.filter (comp (not) (f));  // input json let json = '{"test": [{},{},{"x": 1}], "test2": [{},{}], "a": 1, "b": 2}';  // parsed json let data = json.parse(json);  // transform data let output = json.stringify(object.assign({}, data, {    // remove empty objects `test`   test: remove (isemptyobject) (data.test),    // remove empty objects `test2`   test2: remove (isemptyobject) (data.test2), }));  // display output console.log(output); // '{"test":[{"x":1}],"test2":[],"a":1,"b":2}'

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