Hide certain values in output from JSON.stringify()

Question

Is it possible to exclude certain fields from being included in the json string?

Here is some pseudo code

var x = {
    x:0,
    y:0,
    divID:\"xyz         


        

Answer 1

Another good solution: (requires underscore)

x.toJSON = function () {
    return _.omit(this, [ "privateProperty1", "privateProperty2" ]);
};

The benefit of this solution is that anyone calling JSON.stringify on x will have correct results - you don't have to alter the JSON.stringify calls individually.

Non-underscore version:

x.toJSON = function () {
    var result = {};
    for (var x in this) {
        if (x !== "privateProperty1" && x !== "privateProperty2") {
            result[x] = this[x];
        }
    }
    return result;
};