javascript提取字符串

/*
* 要分离出url的查询参数 http://www.nowcoder.com?key=1&key=2&key=3&test=4#hehe
* 不过要注意，如果url不带参数会报错
*/
var url = "http://www.nowcoder.com?key=1&key=2&key=3&test=4#hehe";
var queryString = (url.split ( "?" )[ 1 ]).split ( "#" )[ 0 ];