Ajaxリクエストでのwindow.open呼び出しのインターセプトに対処する方法

 var newwin;
    $("#btn").click(function(){
        newwim = window.open();
        //此处调用ajax，异步即可：
        $.ajax({
            type:'POST',
            url: ajaxurl,       
            dataType : 'json',
            data:parameter,  
            beforeSend : function(){},
            success:function(data) {
                if(data.TSR_CODE == "0"){                
                       newwin.location.href = xxx;//xxx为后端返回的地址;            
                }else{
                    alert(data.TSR_MSG);
                    newwin.close();//此处为ajax失败方法，自动关闭刚才会打开的页面；
                }
            },
            error:function(){
                console.log("访问出错，请重试!");
            },
            complete:function(){}
        });
    });

 $("#btn").click(function(){
        //此处调用ajax，异步即可：
        $.ajax({
            type:'POST',
            url: ajaxurl,       
            dataType : 'json',
            async：false,//改为同步请求
            data:parameter,  
            beforeSend : function(){},
            success:function(data) {
                if(data.TSR_CODE == "0"){                
                     window.open(xxx);               
                }else{
                    alert(data.TSR_MSG);                    
                }
            },
            error:function(){
                console.log("访问出错，请重试!");
            },
            complete:function(){}
        });