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February 1st, 2005, 08:59 AM
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Animation
Hi,
I am trying to learn how to use the setInterval to call a functin and animate a cart but I keep getting the following error:
"There is no source code available for the current location"
I think the problem is happening when I call the function - vartimer = window.setInterval('moveCart()', 100); to set the vartimer.
Also the cart is not moving and sometimes I get an error saying cart is undefined.
I cannot figure out what is wrong and would appreciate if someone could help.
Cheers,
Claudio
<script type="text/javascript">
<!--
vartimer = 0;
var incr = 10;
function moveCart()
{
var xPos;
xPos = cart.style.posLeft + incr;
if(xPos >= 400)
{
incr = -10
cart.style.filter = "FlipH()";
}
if(xPos <= 20)
{
incr = 10;
cart.style.filter = "";
}
cart.style.posLeft = xPos;
}
function toggleAnim()
{
//window.setInterval('moveCart()',100);
//alert(window.setInterval('moveCart()', 100));
if(vartimer!=0)
{
window.clearInterval(vartimer);
cmdAnimate.innerHTML = "<input type='button' value='Animation On' onclick='toggleAnim()'>";
vartimer = 0;
}
else
{
vartimer = window.setInterval('moveCart()', 100);
cmdAnimate.innerHTML = "<input type='button' value='Animation Off' onclick='toggleAnim()'>";
}
}
-->
</script>
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February 1st, 2005, 09:30 AM
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Wrox Author
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Posts: 3,074
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Can you show a bit more of the page?
--
Joe ( Microsoft MVP - XML)
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February 1st, 2005, 09:50 AM
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Friend of Wrox
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Hi joefawcett,
Sure. below is the whole page. Just find a cart graphic and copy into an image folder. I think the cart should me moving but it isn't this is quite annoying since I cannot spot any errors at all. Thanks for your help.
<html>
<head>
<title>setIntervalCSSAnimation</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name=vs_defaultClientScript content="JavaScript">
<meta name=vs_targetSchema content="http://schemas.microsoft.com/intellisense/ie5">
<style>
H2, P {font-family:tahoma}
</style>
<script type="text/javascript">
<!--
vartimer = 0;
var incr = 10;
function moveCart()
{
var xPos;
xPos = cart.style.posLeft + incr;
if(xPos >= 400)
{
incr = -10
cart.style.filter = "FlipH()";
}
if(xPos <= 20)
{
incr = 10;
cart.style.filter = "";
}
cart.style.posLeft = xPos;
}
function toggleAnim()
{
//window.setInterval('moveCart()',100);
//alert(window.setInterval('moveCart()', 100));
if(vartimer!=0)
{
window.clearInterval(vartimer);
cmdAnimate.innerHTML = "<input type='button' value='Animation On' onclick='toggleAnim()'>";
vartimer = 0;
}
else
{
vartimer = window.setInterval('moveCart()', 100);
cmdAnimate.innerHTML = "<input type='button' value='Animation Off' onclick='toggleAnim()'>";
}
}
-->
</script>
</head>
<body MS_POSITIONING="GridLayout">
<h2>Animation</h2>
<p>Click button to move cart</p>
<span id="cart" NAME="cart" style="postion:absolute; top:150px; lef:20px">
<img src="images/cart.jpg">
</span>
<form name="frmMain" method="post" runat="server" action="setIntervalCSSAnimation.aspx">
<span id="cmdAnimate">
<input type="button" value="Animation on" onclick="toggleAnim()">
</span>
</form>
</body>
</html>
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February 2nd, 2005, 06:29 AM
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Wrox Author
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Join Date: Jun 2003
Posts: 3,074
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You have mispelled 'position' and 'left' in your style attribute of 'cart' span.
--
Joe ( Microsoft MVP - XML)
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February 2nd, 2005, 07:59 AM
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Friend of Wrox
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Thanks Joe.
Is there a way to debug for mispelling like that??
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February 2nd, 2005, 08:03 AM
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Wrox Author
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You could also simplify toggleAdmin.
Code:
function toggleAdmin(Sender)
{
if(vartimer!=0)
{
window.clearInterval(vartimer);
Sender.value = "Animation On";
vartimer = 0;
}
else
{
vartimer = window.setInterval('moveCart()', 100);
Sender.value = "Animation Off";
}
}
and change your button html to:
Code:
<input type="button" value="Animation on" onclick="toggleAnim(this);">
--
Joe ( Microsoft MVP - XML)
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February 2nd, 2005, 08:38 AM
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Friend of Wrox
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Hi Joe,
What is "Sender.value" ?
I can see you are changing the value of the button but why Sender does that?? I would appreciate if you could elaborate on that.
Cheers,
Claudio
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February 2nd, 2005, 10:02 AM
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Wrox Author
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Join Date: Jun 2003
Posts: 3,074
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The "this" in "toggleAmin(this);" is a reference to the element that fired the event.
--
Joe ( Microsoft MVP - XML)
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February 2nd, 2005, 10:03 AM
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Wrox Author
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Quote:
quote:Originally posted by pallone
Thanks Joe.
Is there a way to debug for mispelling like that??
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Not in any editor I know, they can cope with attributes mispelt but not with inline styles.
--
Joe ( Microsoft MVP - XML)
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February 2nd, 2005, 03:17 PM
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Thanks ever so much Joe,
Does Sender works for netscape as well ?
Cheers,
Claudio
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