向URL末尾添加查询字符串参数的辅助函数及获取Url的参数函数

function addURLParam(url,name,value){  url += (url.indexOf('?')==-1 ? '?' : '&');  url += encodeURIComponent(name) + '=' + encodeURIComponent(value);  return url;  
}  

获取

/*获取URL参数*/
function getQueryString(url, name) {var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");var r = url.match(reg);if (r != null) return unescape(r[2]);return null;
}