var httpUtils = cc.Class({
    extends: cc.Component,
 
    properties: {
        // foo: {
        //    default: null,      // The default value will be used only when the component attaching
        //                           to a node for the first time
        //    url: cc.Texture2D,  // optional, default is typeof default
        //    serializable: true, // optional, default is true
        //    visible: true,      // optional, default is true
        //    displayName: 'Foo', // optional
        //    readonly: false,    // optional, default is false
        // },
        // ...
    },
 
    statics: {
        instance: null
    },
 
    // use this for initialization
    onLoad: function () {
    },
    httpGetsGameType: function (url, callback) {
        var xhr = cc.loader.getXMLHttpRequest();//new XMLHttpRequest();//
        xhr.onreadystatechange = function () {
            if (xhr.readyState === 4 && (xhr.status >= 200 && xhr.status < 300)) {
                var respone = xhr.responseText;
                callback(respone);
            }else{
                callback(-1);
            }
        };
        xhr.open("GET", url, true);
        if (cc.sys.isNative) {
            xhr.setRequestHeader("Accept-Encoding", "gzip,deflate");
        }
 
        // note: In Internet Explorer, the timeout property may be set only after calling the open()
        // method and before calling the send() method.
        xhr.timeout = 5000;// 5 seconds for timeout
        xhr.send();
    },

    httpGets: function (url, callback) {
        var xhr = cc.loader.getXMLHttpRequest();//new XMLHttpRequest();//
        xhr.onreadystatechange = function () {
            if (xhr.readyState === 4 && (xhr.status >= 200 && xhr.status < 300)) {
                var respone = xhr.responseText;
                callback(respone);
            }else{

            }
        };
        xhr.open("GET", url, true);
        if (cc.sys.isNative) {
            xhr.setRequestHeader("Accept-Encoding", "gzip,deflate");
        }
 
        // note: In Internet Explorer, the timeout property may be set only after calling the open()
        // method and before calling the send() method.
        xhr.timeout = 5000;// 5 seconds for timeout
        xhr.send();
    },
 
    httpPost: function (url, params, callback) {
        var xhr = cc.loader.getXMLHttpRequest();
        xhr.onreadystatechange = function () {
            // cc.log('xhr.readyState='+xhr.readyState+'  xhr.status='+xhr.status);
            if (xhr.readyState === 4 && (xhr.status >= 200 && xhr.status < 300)) {
                var respone = xhr.responseText;
                callback(respone);
            }else{
                //   callback(-1);
            }
        };
        xhr.open("POST", url, true);
        if (cc.sys.isNative) {
            xhr.setRequestHeader("Accept-Encoding", "gzip,deflate");
        }
        xhr.setRequestHeader('Content-Type', 'application/json;charset=utf-8');
 
        // note: In Internet Explorer, the timeout property may be set only after calling the open()
        // method and before calling the send() method.
        xhr.timeout = 1000;// 5 seconds for timeout
 
        xhr.send(params);
    },
    httpPut: function (url, params, callback) {
        var xhr = cc.loader.getXMLHttpRequest();
        xhr.onreadystatechange = function () {
            // cc.log('xhr.readyState='+xhr.readyState+'  xhr.status='+xhr.status);
            if (xhr.readyState === 4 && (xhr.status >= 200 && xhr.status < 300)) {
                var respone = xhr.responseText;
                callback(respone);
            }else{
                //   callback(-1);
            }
        };
        xhr.open("PUT", url, true);
        if (cc.sys.isNative) {
            xhr.setRequestHeader("Accept-Encoding", "gzip,deflate");
        }
        xhr.setRequestHeader('Content-Type', 'application/json;charset=utf-8');
 
        // note: In Internet Explorer, the timeout property may be set only after calling the open()
        // method and before calling the send() method.
        xhr.timeout = 1000;// 5 seconds for timeout
 
        xhr.send(params);
    },
    httpheaderPost: function (url, params, callback ,headerName, headerValue) {
        var xhr = cc.loader.getXMLHttpRequest();
        xhr.onreadystatechange = function () {
            // cc.log('xhr.readyState='+xhr.readyState+'  xhr.status='+xhr.status);
            if (xhr.readyState === 4 && (xhr.status >= 200 && xhr.status < 300)) {
                var respone = xhr.responseText;
                callback(respone);
            }else{
                  callback(-1);
            }
        };
        xhr.open("POST", url, true);
        if (havaheader==1) {
            xhr.setRequestHeader(headerName, headerValue);
            xhr.setRequestHeader('Content-Type', 'application/json;charset=utf-8');
        }
         // xhr.send(JSON.stringify(HTTP.data));
        // note: In Internet Explorer, the timeout property may be set only after calling the open()
        // method and before calling the send() method.
        xhr.timeout = 5000;// 5 seconds for timeout
 
        xhr.send(params);
    },
    httpCeshi:function(){

    console.log("玩家单利模式调取完毕");

    }
});

httpUtils.getInstance = function () {
    if (httpUtils.instance == null) {
        httpUtils.instance = new httpUtils();
    }
    return httpUtils.instance;
};
 
 
//js 单利的使用方法：