JavaScript 倒计时弹出窗口

Question

我正在尝试制作一个 div，其中包含一个 javascript 计时器弹出窗口，在输入 activity 2 秒后弹出，然后在再次出现 activity 时消失。

我想我快到了，我已经用我的一些代码创建了一个 jsfiddle。

活动和非活动事件有效（即弹出和隐藏）- 我只是不知道如何让倒计时计时器出现在 div 中。然后理想情况下，当计时器达到 0 - window 将被重定向到 google.com

var div = document.createElement("div");
div.id = "timer";
div.style.display = "none";
div.style.width = "200px";
div.style.height = "200px";
div.style.background = "red";
div.style.color = "white";
div.style.position = "fixed";
div.style.top = "80%";
div.style.left = "50%";
document.body.appendChild(div);

var timeoutID;
var idleTimeout = 5; 
var idleSecondsTimer = null;
var idleSecondsCounter = 0;

function setup() {
    this.addEventListener("mousemove", resetTimer, false);
    this.addEventListener("mousedown", resetTimer, false);
    this.addEventListener("keypress", resetTimer, false);
    this.addEventListener("DOMMouseScroll", resetTimer, false);
    this.addEventListener("mousewheel", resetTimer, false);
    this.addEventListener("touchmove", resetTimer, false);
    this.addEventListener("MSPointerMove", resetTimer, false);

    startTimer();
}
setup();

function startTimer() {
    // wait 2 seconds before calling goInactive
    timeoutID = window.setTimeout(goInactive, 2000);
}

function resetTimer(e) {
    window.clearTimeout(timeoutID);
    goActive();
}

function goInactive() {
    div.style.display = "block";
    div.innerHTML = "Inactivity detected. Redirecting in ..." + (idleTimeout - idleSecondsCounter) + " ...please touch screen to close this message";
    // show a count down here then redirect to google.com
}

function goActive() {
    div.style.display = "none";
    startTimer();
}

我一直在关注 this tutorial，这对我的大部分帮助很大。感谢任何帮助。

Answer 1

这里是带重定向的倒计时的实现。

我刚刚添加了一个 setInterval 函数，每秒钟调用一次，以减少倒计时或重定向页面。此外，此计时器在 resetTimer 函数中被清除。使用 document.getElementById("countdown").innerHTML

使用 ID 元素更新显示的数字

var div = document.createElement("div");
div.id = "timer";
div.style.display = "none";
div.style.width = "200px";
div.style.height = "200px";
div.style.background = "red";
div.style.color = "white";
div.style.position = "fixed";
div.style.top = "80%";
div.style.left = "50%";
document.body.appendChild(div);

var timeoutID;
var timerID;
var idleTimeout = 5; 
var idleSecondsTimer = null;
var idleSecondsCounter = 0;

function setup() {
    this.addEventListener("mousemove", resetTimer, false);
    this.addEventListener("mousedown", resetTimer, false);
    this.addEventListener("keypress", resetTimer, false);
    this.addEventListener("DOMMouseScroll", resetTimer, false);
    this.addEventListener("mousewheel", resetTimer, false);
    this.addEventListener("touchmove", resetTimer, false);
    this.addEventListener("MSPointerMove", resetTimer, false);

    startTimer();
}
setup();

function startTimer() {
    // wait 2 seconds before calling goInactive
    timeoutID = setTimeout(goInactive, 2000);
}

function resetTimer(e) {
    clearTimeout(timeoutID);
    clearTimeout(timerID);    
    goActive();
}

function goInactive() {
    idleSecondsCounter = 0;

    div.style.display = "block";
    div.innerHTML = "Inactivity detected. Redirecting in ...<span id='countdown'>" + (idleTimeout - idleSecondsCounter) + "</span> ...please touch screen to close this message";
    // show a count down here then redirect to google.com

    timerID = setInterval(function(){ 
        idleSecondsCounter++; 

        if(idleSecondsCounter >= 6) {
            clearTimeout(timerID);    
            window.location.href = "http://google.com";
        } else {            
            document.getElementById("countdown").innerHTML = (idleTimeout - idleSecondsCounter);
        }
    }, 1000);    
}

function goActive() {
    div.style.display = "none";
    startTimer();
}

Answer 2

您只需触发 setInterval 来更新您的 div 消息，直到您需要查看下面的代码片段。

PS: 当你在 goActive 方法中处于活动状态时，你需要向 clearInterval 添加代码，所以下次它会再次从 5 开始计数，当你的计数器达到 0 时，它不会去到 -1.

var div = document.createElement("div");
div.id = "timer";
div.style.display = "none";
div.style.width = "200px";
div.style.height = "200px";
div.style.background = "red";
div.style.color = "white";
div.style.position = "fixed";
div.style.top = "80%";
div.style.left = "50%";
document.body.appendChild(div);

var timeoutID;
var idleTimeout = 5; 
var idleSecondsTimer = null;
var idleSecondsCounter = 0;

function setup() {
    this.addEventListener("mousemove", resetTimer, false);
    this.addEventListener("mousedown", resetTimer, false);
    this.addEventListener("keypress", resetTimer, false);
    this.addEventListener("DOMMouseScroll", resetTimer, false);
    this.addEventListener("mousewheel", resetTimer, false);
    this.addEventListener("touchmove", resetTimer, false);
    this.addEventListener("MSPointerMove", resetTimer, false);

    startTimer();
}
setup();

function startTimer() {
    // wait 2 seconds before calling goInactive
    timeoutID = window.setTimeout(goInactive, 2000);
}

function resetTimer(e) {
    window.clearTimeout(timeoutID);
    goActive();
}

function goInactive() {
    div.style.display = "block";
    div.innerHTML = "Inactivity detected. Redirecting in ..." + (idleTimeout - idleSecondsCounter) + " ...please touch screen to close this message";
    // show a count down here then redirect to google.com
    idleSecondsTimer = setInterval(function(){
     idleSecondsCounter++;
        div.innerHTML = "Inactivity detected. Redirecting in ..." + (idleTimeout - idleSecondsCounter) + " ...please touch screen to close this message";
        if(idleTimeout - idleSecondsCounter === 0){
            clearInterval(idleSecondsTimer);
         location.href = 'http://www.google.com';
        }
    },1000);
}

function goActive() {
    div.style.display = "none";
    startTimer();
    if(idleSecondsTimer){
        idleSecondsCounter = 0;
        clearInterval(idleSecondsTimer);
    }
}

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JavaScript 倒计时弹出窗口

JavaScript countdown popup

html

javascript

function

timer

addeventlistener