function appendLog(log) {
    if (window.debug) {
        console.log(log);
    };
}

function str(obj) {
    return JSON.stringify(obj, '', '\t');
}

//解析url,获得传递的参数
function  getUrlParam(name){   
    var reg=new RegExp("(^|&)"+name+"=([^&]*)(&|$)");   
    var r=window.location.search.substr(1).match(reg);   
    if  (r!=null)   return decodeURI(r[2]); 
    return   null;   
} 

function linkJoin(){
    var url = targetUrl + '?param=' + param;
    window.location.href = url;
}