晒几条自个封装的js函数，欢迎拍砖。

function getUrlParameter(name) {
    /// <summary>获得URL的指字参数</summary>
    /// <param name="name" type="String">参数名</param>
    var url = location.href;
    var index = url.indexOf("?");
    var result = "null";
    if (index > 0) {
        var items = url.substring(index + 1).match(new RegExp("[^&]+", "g"));
        for (var j = 0; j < items.length; j++) {
            if (new RegExp(name + "=", "g").test(items[j])) {
                result = items[j].replace(new RegExp(name + "=", "g"), "");
            }
        }
    }
    return result;
}
function getCookies(name, sub_name) {
    /// <summary>获得cookie集合值[健值对]</summary>
    /// <param name="name" type="String">cookie名称</param>
    /// <param name="sub_name" type="String">找到cookie集合值中sub_name健的值</param>
    var result;
    var reg = /[^;]+/ig;
    var itmes = document.cookie.match(new RegExp("[^;]+", "ig"));
    for (var i = 0; i < itmes.length; i++) {
        var cookie_name = itmes[i].substring(0, itmes[i].indexOf("="));
        cookie_name = cookie_name.replace(/ /g, "");
        if (cookie_name == name) {
            var subItmes = itmes[i].substring(itmes[i].indexOf("=") + 1).match(new RegExp("[^&]+", "g"));
            for (var j = 0; j < subItmes.length; j++) {
                if (new RegExp(sub_name + "=", "g").test(subItmes[j])) {
                    result = subItmes[j].replace(new RegExp(sub_name + "=", "g"), "");
                }
            }
        }
    }
    return result;
}
function createValidateString(data) {
    /// <summary>制作中文验证码</summary>
    /// <param name="data" type="json">{id,name}id要显示的元素标签，name验证码存放在cookie里的名称</param>
    var strings = ['五福临门', '福如东海', '步步高升', '岁岁平安', '辞旧迎新', '心想事成', '事事顺心', '年年平安', '十全十美', '事业有成', '蒸蒸日上', '四季发财', '扬帆远航', '一生平安', '身体健康', '马到成功', '九九九', '恭喜发财', '财源滚滚', '招财进宝', '财源广进'];
    var index = parseInt(Math.random() * 20);
    document.getElementById(data.id).innerHTML = strings[index];
    setCookie(data.name, strings[index]);
}
function checkBoxSelect() {
    /// <summary>CheckBox实现全选操作</summary>
    var items = document.getElementsByTagName("input");

    if (items.length > 0) {
        for (var i = 0; i < items.length; i++) {
            if (items[i].type == "checkbox") {
                if (items[i].checked == true) {
                    items[i].checked = false;
                } else {
                    items[i].checked = true;
                }
            }
        }
    }
}
function btnUrl(name, url) {
    /// <summary>按钮跳转到指定的路径</summary>
    /// <param name="name" type="String">参数名</param>
    /// <param name="url" type="String">指定的路径</param>
    var val = getUrlParameter(name);

    location = url + "?" + name + "=" + val;
}