Как работать с этим кодом?

var h = {
            config: {},
            initConfig: function() {
                this.config = {
                    ajaxParams: {
                        type: "POST",
                        url: _citybook_add_ons.url,
                        data: {}
                    },
                    actionPrefix: "citybook_addons_"
                }
            },
            init: function() {
                this.initConfig()
            },
            send: function(e, t) {

                var i = JSON.parse(JSON.stringify(this.config.ajaxParams));
                
                t = t || {}, e = this.config.actionPrefix + e, E.extend(i, t), i.data instanceof FormData ? (i.data.append("action", e), i.data.append("_nonce", _citybook_add_ons.nonce)) : (i.data.action = e, i.data._nonce = _citybook_add_ons.nonce);
                var a = i.success,
                    n = i.error;
                return (a || n) && (i.success = function(e) {
                    e.success && a && a(e.data), !e.success && n && n(e.data)
                }, n && (i.error = function(e) {
                    n(e)
                })), E.ajax(i)
            }
        };