js获取浏览器地址栏传值

/**
* 获得得浏览器地址栏传值的方法
* 
* 用法：$.fn.getQuery("name");
* 例如地址栏地址为：1.html?name=张三&sex=男
* $.fn.getQuery("name")取得的值为张三
*/
$.fn.getQuery = function(name) {
    var query = null;
    //position = window.location.search.indexOf('?');
    //var search = window.location.search.substring(position);


    var search = window.location.search.substring(1);

    var args = search.split("&");
    alert(args);
    for (var i = 0, length = args.length; i < length; i++) {
        var items = args[i].split("=");
        if (items[0] == name) {
            if (query == null) {
                query = decodeURI(items[1]);
            } else {
                query = "," + decodeURI(items[1]);
            }
        }
    }
    return query;
};

alert($.fn.getQuery('sex'));