Question

I’m generating JSON from a javascript object. But I do not need all attributes from the object in the JSON. Is there a way (or a library) to do this? Till now, I overrided the toJSON function and return a new Object with reduced attributes, but its a nasty workaround, isn’t it?

Answer 1

JSON.stringify accepts a second parameter, a “replacer” function, that you may be able to use to exclude certain properties.

var exclude = { 'akey': true };

var obj = { 'akey': 2, 'anotherkey': 3 };

JSON.stringify(obj, function (key, value) {
    if(exclude[key]) return undefined;
    return value;
});

=> "{'anotherkey':3}"