var gnp = {

    get: function(url) {

        return this._get(url, true)

    },

    synget: function(url) {

        return this._get(url, false)

    },

    _get: function(url, syn) {

        const promise = new Promise(function(resolve, reject) {

            const handler = function() {

                if(this.readyState !== 4) {

                    return;

                }

                if(this.status === 200) {

                    resolve(this.response);

                } else {

                    reject(new Error(this.statusText));

                }

            }

            var request = new XMLHttpRequest()

            request.open('GET', url, syn)

            request.onreadystatechange = handler

            request.send(null)

        })

        return promise

    },

    post: function(url, data) {

        return this._post(url, data, true)

    },

    synpost: function(url, data) {

        return this._post(url, data, false)

    },

    _post: function(url, data, syn) {

        const promise = new Promise(function(resolve, reject) {

            const handler = function() {

                if(this.readyState !== 4) {

                    return;

                }

                if(this.status === 200) {

                    resolve(this.response);

                } else {

                    reject(new Error(this.statusText));

                }

            }

            var request = new XMLHttpRequest()

            request.open('POST', url, syn)

            request.setRequestHeader("Content-Type","application/x-www-form-urlencoded")

            request.onreadystatechange = handler

            var ret = gnp._trans(data)

            request.send(ret.substr(0,ret.length-1))

        })

        return promise

    },

    _trans : function(data,key = ''){

        var ret = ""

        if(typeof data == 'object'){

            for(let it in data){

                ret += gnp._trans(data[it],key + (key == ''?it:"["+ it + "]"))

            }

        }else if(Array.isArray(data)){

            for(var i = 0;i < data.length;i++){

                ret += gnp._trans(data[i],key + "[" + i + "]")

            }

        }else if(typeof data == 'function'){

        }else{

            console.log(data)

            ret +=encodeURIComponent( key) + '=' + encodeURIComponent(data)  + "&"

        }

        return ret

    }

}