怎么理解jquery中这段代码？

Question

var serviceUrl = serviceUrlPrefix + "interface_unlockschemelist.do?method=getMarketOrderById&etorderid=" + orderId;
                
                $.proxyReq(
                {
                    data: 
                    {
                        forwardUri: serviceUrl
                    },
                    success: getSuccess,
                    error: getError
                });/////////////////////////////////////////////////////////////
jQuery.extend(
{
    proxyReq: function(opt)
    {
        var defaults = 
        {
            url: "/jsmss_service/jsmss/jsmssProxy.do?r=" + Math.random(),
            timeout: 1000 * 60,
            type: "post",
            async: true,
            inModified: false
        };
        var param = $.extend(defaults, opt);
        
        $.ajax(param);
    }
});请问，变量的param 的结果是多少？这段代码是怎么执行的？

Answer 1

目前刚涉足ExtJs  无法回答，帮你顶一下喽