ajax的get和post请求工具类：

/** * 公共方法类 *  * 使用  变量名=function()定义函数时，如果在变量名前加var，则这个变量变成局部变量 */var Common = function() {        /*     * 获取url参数     */    var getQueryStr = function(sUrlParam, sArgName) {        var retval = "";        if (sUrlParam == null || sUrlParam.length == 0) {            return retval;        }        var args = sUrlParam.split("&");        for (var i = 0; i < args.length; i++) {            sUrlParam = args[i];            var arg = sUrlParam.split("=");            if (arg.length <= 1)                continue;            if (arg[0] == sArgName)                retval = arg[1];        }        return retval;    }        /*     * ajax发送post请求     */    var postReq = function(url, param, fnCallback, isIndex) {        var target, options = {            title : "异常信息",            content : "",            bodyType : "errorMessage"        };                if (isIndex) {            target = window;        }        else {            target = window.parent;        }               $.ajax({                url : url,                type : "POST",                timeout : 300000,                headers:"Access-Control-Allow-Origin:*",                contentType : "application/x-www-form-urlencoded;charset=UTF-8",                dataType : "json",                data : param            }).done(function(data, textStatus, jqXHR) {                if (jqXHR.getResponseHeader('sessionStatus') == 'timeout') {                    options.content = '会话已经超时.';                    target.showModal(options, function() {                            target.location.href = 'login.html';                        });                }                else if (!data) {                    options.content = '无返回信息.';                    target.showModal(options, function() {                            // donothing                        });                }                else {                    fnCallback(data);                }            }).fail(function(jqXHR, textStatus, errorThrown) {                if (jqXHR.status == 0) {                    options.content = '请求异常，网络连接失败！';                }                else if (jqXHR.status == 403) {                    options.content = jqXHR.responseJSON.message;                }                else {                    options.content = "请求异常，状态码：" + jqXHR.status;                }                                target.showModal(options, function() {                        // donothing                    });            });    };        var postReq = function(url, param, fnCallback, isIndex) {        var target, options = {            title : "异常信息",            content : "",            bodyType : "errorMessage"        };                if (isIndex) {            target = window;        }        else {            target = window.parent;        }               $.ajax({                url : url,                type : "POST",                timeout : 300000,                contentType : "application/x-www-form-urlencoded;charset=UTF-8",                dataType : "json",                data : param            }).done(function(data, textStatus, jqXHR) {                if (jqXHR.getResponseHeader('sessionStatus') == 'timeout') {                    options.content = '会话已经超时.';                    target.showModal(options, function() {                            target.location.href = 'login.html';                        });                }                else if (!data) {                    options.content = '无返回信息.';                    target.showModal(options, function() {                            // donothing                        });                }                else {                    fnCallback(data);                }            }).fail(function(jqXHR, textStatus, errorThrown) {                if (jqXHR.status == 0) {                    options.content = '请求异常，网络连接失败！';                }                else if (jqXHR.status == 403) {                    options.content = jqXHR.responseJSON.message;                }                else {                    options.content = "请求异常，状态码：" + jqXHR.status;                }                                target.showModal(options, function() {                        // donothing                    });            });    };        return {        getQueryStr : getQueryStr,        postReq : postReq    }}();

调用方法：

                    Common.postReq('svcinfo/findForSelect.do', {                            svcAlias : key                        }, function(json) {                            if ($.trim(key) == '') {                                // splice(a1,a2,a3...)从a1位置开始替换a2个元素为a3...                                json.data.splice(0, 0, {                                        svnName : 'all',                                        svcAlias : '所有服务'                                    });                            }                            me.cacheDataSource = [];//清空原数组，避免内存泄露                            me.cacheDataSource[key] = json.data;                            query.callback({                                    results : json.data                                });                        });

转载于:https://www.cnblogs.com/yanduanduan/p/6594627.html