I was planning on making a personal project with JavaScript until I encountered a problem. I have a table that's "Invisible" with css "style.display=none" but when I try to make it "visible" I get "Uncaught TypeError: Cannot read property 'style' of null".
JavaScript Code below:
function attack(){
document.getElementById("list").style.display="block";
document.getElementById("message").innerHTML="";
}
function fire(){
var y=document.getElementById("message");
var x=document.getElementById("demo");
var z=document.getElementById("att");
x.innerHTML=3;
}
function disappear(){
document.getElementById("list").style.display="none";
document.getElementById("message").innerHTML="<center>Wild SlayerZach has appeared.</center>";
}
HTML below:
<body onload="disappear()">
<table border="1" >
<tr>
<td><img id="SHP" src="Hp/HPSlayerzach/hp2.png"/></td>
<td></td>
<td><img src="characters/slayerzach/slayerzach.png"/></td>
</tr>
<tr>
<td><p id="demo"></p></td>
<td ><img id="att" src="backgrounds/spacer1.png"/></td>
<td></td>
</tr>
<tr>
<td><img align="right" src="characters/fighterdan13/fighterDan13.gif"/></td>
<td></td>
<td><img id="FHP" src="hp/HPFighterdan13/hp1.png"/></td>
</tr>
<tr>
<td id="message" colspan="2" background="backgrounds/backgroundText.png">
<center><table border="0" id="list">
<tr>
<td style="font-family:verdana;font-size:15px"><center><a onclick="fire()">FIRE</a></center></td>
<td style="font-family:verdana;font-size:15px"><center>LIGHTNING</center></td>
</tr>
<tr>
<td style="font-family:verdana;font-size:15px"><center>WATER</center></td>
<td style="font-family:verdana;font-size:15px"><center>EARTH</center></td>
</tr>
</table></center>
</td>
<td>
<center><table border="0" background="backgrounds/backgroundmenu.png">
<tr>
<td><button id="butAtt" onclick="attack()">Attack</button></td>
<td><button id="butItems" disabled>Items</button></td>
</tr>
<tr>
<td colspan="2"><center><button id="butRun" style="width:110px; height:25px;" disabled>Run</button><center></td>
</tr>
</table></center>
</td>
</tr>
</table>
</body>
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