避免按钮重复点击的小工具bimianchongfu.queren()

按钮后台可能执行很长时间，这期间如果客户等不及再次点了按钮，可能会重复触发。

比如资产折旧，运行很长时间。

所以可以做一个hf_running的hiddenfield对象，设置值1表示正在运行，0表示没有。为兼容性用的纯js。

封装好了：

//避免重复运行，需要加一个hf_running的控件。用法：
//if (!bimianchongfu.queren('确认继续吗？')) return;
//执行具体业务代码
//执行完后，清空hf_running的值或者改成0
var bimianchongfu = {
    kongjian: { objRunning: "hf_running" },
    //检查是否正在运行，并提示，并设置值
    queren: function (AConfirmMsg, lShowAlert, strShowAlert, lMarkIsRunning) {
        var rt = this.zhengzaiyunxing(lShowAlert, strShowAlert, false);//检查正在运行
        if (rt) return false;       //正在运行，返回
        //确认
        var s = AConfirmMsg;
        if (AConfirmMsg == undefined || AConfirmMsg == null) s = "";
        if (s != "") if (!(rt = confirm(s))) return false;
        //
        if (lMarkIsRunning == undefined || lMarkIsRunning == null || lMarkIsRunning == true)
            this.set("1");
        //
        return true;
    },
    //读取是否正在运行
    zhengzaiyunxing: function (lShowAlert, strShowAlert, lMarkIsRunning) {
        var obj = this.kongjian.objRunning, v = "", l = false, s = strShowAlert, lAlert = lShowAlert;
        if (obj == undefined || obj == null) obj = document.getElementById("hf_running");
        else if (typeof (obj) == "string") obj = document.getElementById(obj);
        if (obj == undefined || obj == null) obj = document.getElementById("hf_running");
        if (obj != null && this.kongjian.objRunning == null) this.kongjian.objRunning = obj;//记下来
        v = obj.value;  //取值
        l = !(v == undefined || v == null || v == "" || v == "0" || v == "false");
        //提示信息
        if (l) {        //正在运行
            if (lShowAlert == undefined || lShowAlert == null) lAlert = true;
            if (strShowAlert == undefined || strShowAlert == null) s = "正在运行，请稍候";
            if (lAlert && s != "") alert(s);
        } else {        //没有运行，标记为正在运行
            if (lMarkIsRunning == undefined || lMarkIsRunning == null || lMarkIsRunning == true)
                this.set("1");
        }
        //完成返回
        return l;
    },
    //设置值
    set: function (val) {
        var obj = this.kongjian.objRunning, tp = typeof (obj);
        if (tp == "object") obj.value = val;
        else if (tp == "string") document.getElementById(obj).value = val;
        else document.getElementById("hf_running").value = val;
    }
};