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POIncrease Number Value Displayed on Screen
 

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    <p>I need to have a number that's displayed on a web page that will increase or decrease when the up or down arrow keys are pressed. I found/massaged together javascript file to do this but I can't seem to get it to work with my HTML. I was trying to link it to a html textbox but it would not work. </p> <p>if someone could help me with the HTML to get this working that would be great.</p> <pre><code>var setTimeoutId; var keyIs = "up"; function myIncrementFunction() { var num = parseFloat(myText.value)+1; myText.value = num; } myText.onkeydown = function(e) { keyIs = "down"; if(keyIs == "down") { var e = e || event ; if (e.keyCode == 38) { for(var s=0; s&lt;1; s++) setTimeoutId = setTimeout('myIncrementFunction()',100); } } } myText.onkeyup = function(e) { keyIs = "up"; } </code></pre> <p>Tried this and it still is not working.. > ? </p> <p>number.html</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script type="text/javascript" src="number.js"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;input type="text" id="myText" /&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>number.js</p> <pre><code>var myText = document.getElementById("myText"); // Capture keyDown events myText.onkeydown = function(e) { // "38" is the up arrow key if (e.keyCode == 38) { // increment the value in the text input myText.value++; // "40" is the down arrow key } else if (e.keyCode == 40) { // decrement the value in the text input myText.value--; } } </code></pre> <p>I don't understand why it works in the example posted and when I save my files and open it in the browser it will not work!</p> <p>I'm on OSX Lion using Chrome/Safari</p>
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    1. COCan you post your HTML as well? Also, "I can't seem to get it to work with my HTML" is kind of vague. Are you receiving any error messages? What exactly happens when you run the code?
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    2. COYou don't seem to have defined what "myText" actually is in your Javascript.
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    3. CONo error messages it just does nothing. I have a simple textfield named "myText" I know it's kind of vague I put this together based on a forum post that was also missing the HTML all the poster said what that he had a textfield and you could increment it using this script.
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