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POJavascript offsetLeft doesn't work
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  1. POJavascript offsetLeft doesn't work
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    copied!<p>Here's code where I want to use it:</p> <pre><code> if(e.keyCode==32) { var c=document.createElement("img"); c.src="http://findicons.com/files/icons/1075/scrap/300/aqua_ball_red.png"; c.id="ball"; c.style.top=down+"px"; document.body.appendChild(c); setTimeout(function move(){ c.style.left=1200+"px"; },200); setTimeout(function kill(){ c.style.opacity=0; },700); } }; </code></pre> <p>It's actually a moving ball which moves to certain coords after pressing space.I need to map it's coordinates when it's moving.When I use this:</p> <pre><code>var elem=document.getElementById("ball"); alert(elem.offsetLeft); </code></pre> <p>It does nothing and additionally it makes whole code in <code>if()</code> block not working.My browser is Chrome.</p> <p>Here's a whole code:</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;/head&gt; &lt;body&gt; &lt;style&gt; #rocket { width:50px; height:50px; position:absolute; top:0;left:0; transition:top 0.4s, bottom 0.4s; } #ball { width:15px; height:15px; position:absolute; transition:left 0.5s; } &lt;/style&gt; &lt;script&gt; var down=0; var up=0; document.onkeydown=function(e){ e=e||window.event; if(e.keyCode==40) { down=down+30; document.getElementById("rocket").style.top=down+"px"; } if(e.keyCode==38) { down=down-30; document.getElementById("rocket").style.top=down+"px"; } if(e.keyCode==32) { var c=document.createElement("img"); c.src="http://findicons.com/files/icons/1075/scrap/300/aqua_ball_red.png"; c.id="ball"; c.style.top=down+"px"; document.body.appendChild(c); setTimeout(function move(){ c.style.left=1200+"px"; },200); setTimeout(function kill(){ c.style.opacity=0; },700); } }; document.onclick=function(e){ var y=e.pageY; document.getElementById("rocket").style.top=y+"px"; down=y; }; &lt;/script&gt; &lt;img src="http://0.static.wix.com/media/a8b510_fc007f8eedd9f304c54ac6d374e3ee0b.gif_1024" id="rocket"&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
 

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