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POShow a countdowntimer-script with DOM
 

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  1. POShow a countdowntimer-script with DOM
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    <p>I'm fairly new to DOM and the whole HTML and PHP Stuff so I'm seeking some information on how to do this. What I have until now is a Javascript. Now I want/have to use DOM to show this script. (FYI: I'm implementing something for Moodle and this has be done like this)</p> <p>What I have found out about DOM is that I can change values of different Nodes. The problem I've found myself in is that all the examples I found were like. Click on a button and something happens. That's ok but now I want my script to run every second so I can the person who needs it can see that the time is running down.</p> <p>I hope I gave you enough information and I hope you can help me. Thank you for trying to help me. </p> <pre><code>var running = false var endTime = null var timerID = null // totalMinutes the amount of minutes is put into var totalMinutes = 3; function startTimer() { // running is being started and the current time is put into the variable running = true now = new Date() now = now.getTime() // Variable endTime gets the time plus the maximum time endTime = now + (1000 * 60 * totalMinutes); showCountDown() } function showCountDown() { // same as startTimer, time is saved in variable now var now = new Date() now = now.getTime() if (endTime - now &lt;= 0) { // Variable timerID gets clearTimeout --&gt;http://de.selfhtml.org/javascript/objekte/window.htm#clear_timeout clearTimeout(timerID) // boolean running set to false running = false alert("Ihr Resultat wird nun ausgewertet!") } else { // delta is being calculated var delta = new Date(endTime - now) var theMin = delta.getMinutes() var theSec = delta.getSeconds() var theTime = theMin // show seconds and minutes theTime += ((theSec &lt; 10) ? ":0" : ":") + theSec document.getElementById('CheckResults').innerHTML = " (&amp;Uuml;bung in " + theTime + " Minuten abgelaufen)" if (running) { timerID = setTimeout("showCountDown()",900) } } } &lt;/script&gt; </code></pre>
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    1. USFabio Oesch
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