对于低版本IE,ajax的设置处理

!(function() {
    var timeout = 16000;
    //设置ajax请求的setting配置----start
    jQuery.support.cors = true;
    $.extend($.ajaxSettings, {
        cache: true,
        timeout: timeout, //毫秒
        dataType: "json",
        type: "POST",
        xhrFields: {
            withCredentials: true
        },
        crossDomain: !0
        //      contentType: "application/x-www-form-urlencoded;charset=UTF-8"
    });
    //设置ajax请求的setting配置----end

    /**
     * 判断是否是低于制定版本的ie
     */
    window.IsLetIe = function() {
        var ua = navigator.userAgent;
        return ua.indexOf("MSIE 6") > 0 || ua.indexOf("MSIE 7") > 0 || ua.indexOf("MSIE 8") > 0 || ua.indexOf("MSIE 9") > 0;
    }

    /**
     * ajax封装 默认get
     * @param {String} url 地址
     * @param {JSON} data 数据
     * @param {String} type 数据
     * @param {Function} okFn 成功回调
     * @param {Function} failFn 失败回调
     * @param {Function} errFn 错误回调
     * @param {Function} cmpFn 完成回调
     */
    window.Ajax = function(url, data, type, okFn, failFn, errFn, cmpFn) {
        type = type ? type : 'GET';
        //ie9以下 传json string 在IE6,7,8,9下 传json后端获取不到 只能在body中读取流
        var contentType = 'application/x-www-form-urlencoded;charset=UTF-8';

        if(window.IsLetIe()) {
            data = JSON.stringify(data);
            contentType = 'text/plain';
        }
        $.ajax({
            url: url,
            type: type,
            asysc: true,
            data: data,
            contentType: contentType,
            beforeSend: function(request) {},
            success: function(response) {
                if(response.responseCode == '001') {
                    typeof okFn == 'function' && okFn(response);
                } else {
                    typeof failFn == 'function' && failFn(response);
                }
            },
            error: function(xhr, msg, err) {
                //alert('xhr-->' + JSON.stringify(xhr))
                //alert('msg-->' + msg)
                //alert('err-->' + JSON.stringify(err))
                if(typeof errFn == "function" && errFn) {
                    errFn(xhr);
                } else {
                    alert('请求失败,请稍后重试');
                }

            },
            complete: function(response) {
                typeof cmpFn == "function" && cmpFn();
            }
        });
    }
    /**
     * post请求
     * @param {String} url 地址
     * @param {JSON} data 数据
     * @param {Function} okFn 成功回调
     * @param {Function} failFn 失败回调
     * @param {Function} errFn 错误回调
     * @param {Function} cmpFn 完成回调
     */
    window.AjaxPost = function(url, data, okFn, failFn, errFn, cmpFn) {
        Ajax(url, data, 'POST', okFn, failFn, errFn, cmpFn);
    }
    /**
     * get请求
     * @param {String} url 地址
     * @param {JSON} data 数据
     * @param {Function} okFn 成功回调
     * @param {Function} failFn 失败回调
     * @param {Function} errFn 错误回调
     * @param {Function} cmpFn 完成回调
     */
    window.AjaxGet = function(url, data, okFn, failFn, errFn, cmpFn) {
        Ajax(url, data, 'GET', okFn, failFn, errFn, cmpFn);
    }

    var _app = {
        config: {
            environment: 'prod' //当前接口环境
        },
        domain: {
            qirong: {
                prod: baseURL + '/'
            }
        },
        source: {
            inter: {
                getInterInfo: 'into/getInterInfo.do'
            }
        },
        api: {
            getInterInfo: function(inputData, okFn, failFn, errFn, cmpFn) {
                AjaxPost(_app.source.inter.getInterInfo, inputData, okFn, failFn, errFn, cmpFn);
            }
        },
        init: function() {
            //加载接口
            this.load();
            window.Api = _app.api;
        },
        load: function() {
            //遍历source 获取所有类型名称 inner,ocrweb....
            for(var type in this.source) {
                //遍历source[type]当前的类型下的接口地址 例source.inner.creatImg
                for(var item in this.source[type]) {
                    //将当前项的地址拼根据当前接口环境拼接上主域名
                    this.source[type][item] = [this.domain[type][this.config.environment], this.source[type][item]].join('');
                }
            }
        }
    }
    _app.init();
})();
原文地址:https://www.cnblogs.com/Super-scarlett/p/8657188.html