Fluent Interface with Prototype

標題：流暢介面搭配Prototype屬性的用法
JavaScript (index.html)：

<span id="fatty"></span> V.S. <span id="thin"></span>
<script type="text/javascript">
var Runner = function(e) {
    this.speed = e.speed; //Meters per second
    this.time = null; //Second
    this.distance = null; //Meter
};

Runner.prototype.ready = function(e) {
    this.time = 0; //Cost time
    this.distance = e.starting; //Starting point
    return this;
};

Runner.prototype.run = function(e) {
    this.time += e.second;
    this.distance += this.speed * e.second; // Distance = Speed * Time
    return this;
};

Runner.prototype.halt = function(e) {
    this.time += e.second;
    return this;
};

Runner.prototype.result = function(e) {
    document.getElementById(e.id).innerHTML = "Distance:" + this.distance + " m, Cost time:" + this.time + " sec";
    return this;
};

var fatty = new Runner({speed:2}); //Speed: 2m/s
fatty.ready({starting:10}).run({second:30}).halt({second:5}).run({second:15}).result({id:"fatty"});

var thin = new Runner({speed:2.5}); //Speed: 2.5m/s
thin.ready({starting:0}).run({second:40}).result({id:"thin"});
</script>

範例結果：
V.S.

說明：
此程式使用流暢介面搭配Prototype屬性的方式撰寫，
計算胖與瘦的人100公尺跑步的時間(不計加減速)，
條件項目:
1. 胖者速度為每秒2公尺 - Runner({speed:2})
2. 瘦者速度為每秒2.5公尺 - Runner({speed:2.5})
3. 瘦者禮讓胖者由10公尺處起跑 - ready({starting:10})
4. 胖者跑了30秒以後，休息了5秒，再繼續跑了15秒 - run({second:30}).halt({second:5}).run({second:15})
5. 瘦者跑了40秒全程無休息 - run({second:40})

Positive and Countdown Timer

標題：正倒數計時器
JavaScript (index.html)：

<span id="loveboxy"></span>
<script type="text/javascript">
var TimerBoxy = function(e) {
    this.id = e.id;
    this.target = new Date(e.target);
};
TimerBoxy.prototype.show = function() {
    var s = Math.abs(parseInt( (new Date().getTime() - this.target.getTime() )/1000,10));
    var m = s/60;
    var h = m/60;
    var D = h/24;
    document.getElementById(this.id).innerHTML = 
    parseInt(D,10) + "日" + parseInt(h%24,10) + "時" + parseInt(m%60,10) + "分" + parseInt(s%60,10) + "秒";
};
TimerBoxy.prototype.start = function() {
    if(!this.timer) {
        var that = this;
        this.show();
        this.timer = window.setInterval(function() {
            that.show();
        }, 1000);
    }
};
TimerBoxy.prototype.stop = function() {
    if(this.timer) {
        window.clearInterval(this.timer);
        this.timer = null;
    }
};
loveboxy = new TimerBoxy({
    id : "loveboxy",
    target : "2011/11/11 11:11:11"
});
loveboxy.start();
</script>

使用範例：


說明：
當目標時間小於當日時間則為正數計時，反之則為倒數計時。
(感謝TonyQ幫忙修正。)

Send Mail with Google Form

標題：Google表單指令碼寄信
Google App Script (sendmail.gs)：

function sendmail(e) {
    var currentItemResponses = e.response.getItemResponses();
    var name = currentItemResponses[0].getResponse(); //姓名
    var sex = currentItemResponses[1].getResponse();  //性別
    var mail = currentItemResponses[2].getResponse(); //E-MAIL
    var sexword = (sex=="男")?"先生":"小姐";
    MailApp.sendEmail(mail, "報名成功", name + " " + sexword + "您好，\n" + "恭喜您報名成功。");
}

說明：
用於在表單新增寄信的指令碼。

Folder Access Restrictions in Node.JS

標題：Express資料夾權限控制
Node.JS (main.js)：

說明：
使用Express搭配Session的方式進行私用資料夾的權限控制。