Stringify-Beautify JSON

stringify-beautify-json.js

function beautify(o, dl) {
    function beautifyStringify(b, t) {
        if (b === null || typeof b != "object") {
            return JSON.stringify(b);
        }

        var sp = "";
        for (var i = 0; i < t; ++i) sp += dl;
        var sp1 = sp + dl;
        var res = "";
        if (b instanceof Array) {
            res = "[\n" + b.map(function(o) {
                return sp1 + beautifyStringify(o, t + 1);
            }).join(",\n") + "\n" + sp + "]";
        } else {
            res = "{\n" + Object.keys(b).map(function(k) {
                var o = b[k];
                return sp1 + '"' + k + "\": " + beautifyStringify(o, t + 1);
            }).join(",\n") + "\n" + sp + "}";
        }
        return res;
    }
    dl = dl ? dl : "  ";
    return beautifyStringify(o, 0);
}