Session Storage não funciona

Dans · December 23, 2012

Eu tinha o seguinte código onde a imagem movia consoante o numero de cliques na seta:

<!DOCTYPE html>
<html>
<head>
<script>
function clickright()
{
if(typeof(Storage)!=="undefined")
  {
  if (sessionStorage.clickright)
    {
    sessionStorage.clickright=Number(sessionStorage.clickright)+1;
    }
  else
    {
    sessionStorage.clickright=1;
    }
  document.getElementById("Giants").style.left = 250 + sessionStorage.clickright * 25 + "px";
  }
}
function clickdown()
{
if(typeof(Storage)!=="undefined")
  {
  if (sessionStorage.clickdown)
    {
    sessionStorage.clickdown=Number(sessionStorage.clickdown)+1;
    }
  else
    {
    sessionStorage.clickdown=1;
    }
  document.getElementById("Giants").style.top = 250 + sessionStorage.clickdown * 25 + "px";
  }
}
function clickup()
{
if(typeof(Storage)!=="undefined")
  {
  if (sessionStorage.clickup)
    {
    sessionStorage.clickup=Number(sessionStorage.clickup)+1;
    }
  else
    {
    sessionStorage.clickup=1;
    }
  document.getElementById("Giants").style.top = 250 - sessionStorage.clickup * 25 + "px";
  }
}
function clickleft()
{
if(typeof(Storage)!=="undefined")
  {
  if (sessionStorage.clickleft)
    {
    sessionStorage.clickleft=Number(sessionStorage.clickleft)+1;
    }
  else
    {
    sessionStorage.clickleft=1;
    }
  document.getElementById("Giants").style.left = 250 - sessionStorage.clickleft * 25 + "px";
  }
}
</script>
</head>
<body>
<img src=http://icons.iconarchive.com/icons/evermor-design/nfl-helmets/128/Giants-icon.png style="height:50px;width:50px;position:absolute;top:250px;left:250px;" id="Giants"/>
<img onclick="clickup()" id="up" onclick="clicky()"  src="http://icons.iconarchive.com/icons/chromatix/keyboard-keys/128/arrow-up-icon.png"  style="height:50px;width:50px;position:absolute;bottom:50px;left:50px"/>
<img id="left" onclick="clickleft()" src="http://icons.iconarchive.com/icons/chromatix/keyboard-keys/128/arrow-left-icon.png" 
style="height:50px;width:50px;position:absolute;bottom:0px;left:0px;"/>
<img id="down" onclick="clickdown()" src="http://icons.iconarchive.com/icons/chromatix/keyboard-keys/128/arrow-down-icon.png" style="height:50px;width:50px;position:absolute;bottom:0px;left:50px"/>
<img id="right" onclick="clickright()"  src="http://icons.iconarchive.com/icons/chromatix/keyboard-keys/128/arrow-right-icon.png" style="height:50px;width:50px;position:absolute;bottom:0px;left:100px"/>
</body>
</html>

Mas ele tinha um bug: ele não via a diferença, por isso tive de alterar o código para:

<script>
function clickright()
{
if(typeof(Storage)!=="undefined")
  {
  if (sessionStorage.clickright)
    {
    sessionStorage.clickright=Number(sessionStorage.clickright)+1;
    }
  else
    {
    sessionStorage.clickright=1;
    }
  }
}
function clickdown()
{
if(typeof(Storage)!=="undefined")
  {
  if (sessionStorage.clickdown)
    {
    sessionStorage.clickdown=Number(sessionStorage.clickdown)+1;
    }
  else
    {
    sessionStorage.clickdown=1;
    }
  }
}
function clickup()
{
if(typeof(Storage)!=="undefined")
  {
  if (sessionStorage.clickup)
    {
    sessionStorage.clickup=Number(sessionStorage.clickup)+1;
    }
  else
    {
    sessionStorage.clickup=1;
    }
  }
}
function clickleft()
{
if(typeof(Storage)!=="undefined")
  {
  if (sessionStorage.clickleft)
    {
    sessionStorage.clickleft=Number(sessionStorage.clickleft)+1;
    }
  else
    {
    sessionStorage.clickleft=1;
    }
  }
}
{
var x=(Number(sessionStorage.clickleft)-Number(sessionStorage.clickright))*25 + 250
var y=(Number(sessionStorage.clickdown)-Number(sessionStorage.clicktop))*25 + 250
document.getElementById("Giants").style.left = x
document.getElementById("Giants").style.top = y
</script>
<body>
<img src=http://icons.iconarchive.com/icons/evermor-design/nfl-helmets/128/Giants-icon.png style="height:50px;width:50px;position:absolute;top:250px;left:250px;" id="Giants"/>
<img onclick="clickup()" id="up" onclick="clicky()"  src="http://icons.iconarchive.com/icons/chromatix/keyboard-keys/128/arrow-up-icon.png"  style="height:50px;width:50px;position:absolute;bottom:50px;left:50px"/>
<img id="left" onclick="clickleft()" src="http://icons.iconarchive.com/icons/chromatix/keyboard-keys/128/arrow-left-icon.png" 
style="height:50px;width:50px;position:absolute;bottom:0px;left:0px;"/>
<img id="down" onclick="clickdown()" src="http://icons.iconarchive.com/icons/chromatix/keyboard-keys/128/arrow-down-icon.png" style="height:50px;width:50px;position:absolute;bottom:0px;left:50px"/>
<img id="right" onclick="clickright()"  src="http://icons.iconarchive.com/icons/chromatix/keyboard-keys/128/arrow-right-icon.png" style="height:50px;width:50px;position:absolute;bottom:0px;left:100px"/>
</body>
</html>

Mas neste deixou de funcionar o SessionStorage. Por favor ajudem.

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Session Storage não funciona

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Dans

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