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Additional IDs for Hover Popup

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xenowing

xenowing

Technical User
Jan 24, 2010
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Hello - I have this little script that generates a popup when an element is hovered. I'm trying to figure out how to have multiple elements, that each have their own popup.
In the referenced html file there are basically two elements. I've given them their own unique IDs in the HTML, but I have no idea how to add additional unique IDs in the JS, and make this sucker work. Currently, elements #1 and #2 both reveal the #1 popup. I'm trying to have #1 reveal the #1 popup, and #2 reveal the #2 popup.
I hope I've explained clearly.

<code>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "<html xmlns="<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JS Multiple Test</title>

<script type="text/javascript">
function ShowPopup(hoveritem)
{
hp = document.getElementById("hoverpopup1");

// Set position of hover-over popup
hp.style.top = hoveritem.offsetTop + 18;
hp.style.left = hoveritem.offsetLeft + 20;

// Set popup to visible
hp.style.visibility = "Visible";
}

function HidePopup()
{
hp = document.getElementById("hoverpopup1");
hp.style.visibility = "Hidden";
}
</script>

</head>

<body>

<a id="hoverover1" style="cursor:default;" onMouseOver="ShowPopup(this);" onMouseOut="HidePopup();">Hover over me #1!</a>

<br>This is some<br>incidental<br>Text.

<div id="hoverpopup1" style="visibility:hidden; position:absolute; top:0; left:0;"><table bgcolor="#0000FF">
<tr><td><font color="#FFFFFF">This popup #1</font></td></tr>
<tr><td bgcolor="#8888FF">Hello I am popup table 1</td></tr></table>
</div>

<br />
<hr />

<a id="hoverover2" style="cursor:default;" onMouseOver="ShowPopup(this);" onMouseOut="HidePopup();">Hover over me #2!</a>

<br>This is some<br>incidental<br>Text.

<div id="hoverpopup2" style="visibility:hidden; position:absolute; top:0; left:0;"><table bgcolor="#00ccFF">
<tr><td><font color="#FFFFFF">This popup #2</font></td></tr>
<tr><td bgcolor="#cccccc">Hello I am popup table 2</td></tr></table>
</div>

</body>
</html>
</code>
 
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Hi

xenowing said:
I have no idea how to add additional unique IDs in the JS, and make this sucker work.
Click to expand...
Tried to use proper [tt]id[/tt] instead of always referencing hoverpopup1 ?
JavaScript: 
[b]function[/b] [COLOR=darkgoldenrod]ShowPopup[/color][teal]([/teal]hoveritem[teal])[/teal]
[teal]{[/teal]
  hp [teal]=[/teal] document[teal].[/teal][COLOR=darkgoldenrod]getElementById[/color][teal]([/teal][highlight]hoveritem[teal].[/teal]id[teal].[/teal][COLOR=darkgoldenrod]replace[/color][teal]([/teal][fuchsia]/over(\d)/[/fuchsia][teal],[/teal][green][i]'popup$1'[/i][/green][teal])[/teal][/highlight][teal]);[/teal]

[gray]// Set position of hover-over popup[/gray]
  hp[teal].[/teal]style[teal].[/teal]top [teal]=[/teal] hoveritem[teal].[/teal]offsetTop [teal]+[/teal] [purple]18[/purple][highlight pink][teal]+[/teal][green][i]'px'[/i][/green][/highlight][teal];[/teal]
  hp[teal].[/teal]style[teal].[/teal]left [teal]=[/teal] hoveritem[teal].[/teal]offsetLeft [teal]+[/teal] [purple]20[/purple][highlight pink][teal]+[/teal][green][i]'px'[/i][/green][/highlight][teal];[/teal]

[gray]// Set popup to visible[/gray]
  hp[teal].[/teal]style[teal].[/teal]visibility [teal]=[/teal] [green][i]"Visible"[/i][/green][teal];[/teal]
[teal]}[/teal]

[b]function[/b] [COLOR=darkgoldenrod]HidePopup[/color][teal]([/teal][highlight]hoveritem[/highlight][teal])[/teal]
[teal]{[/teal]
  hp [teal]=[/teal] document[teal].[/teal][COLOR=darkgoldenrod]getElementById[/color][teal]([/teal][highlight]hoveritem[teal].[/teal]id[teal].[/teal][COLOR=darkgoldenrod]replace[/color][teal]([/teal][fuchsia]/over(\d)/[/fuchsia][teal],[/teal][green][i]'popup$1'[/i][/green][teal])[/teal][/highlight][teal]);[/teal]
  hp[teal].[/teal]style[teal].[/teal]visibility [teal]=[/teal] [green][i]"Hidden"[/i][/green][teal];[/teal]
[teal]}[/teal]
Code: 
[b]<a[/b] [maroon]id[/maroon][teal]=[/teal][green][i]"hoverover1"[/i][/green] [maroon]style[/maroon][teal]=[/teal][green][i]"cursor:default;"[/i][/green] [maroon]onMouseOver[/maroon][teal]=[/teal][green][i]"ShowPopup(this)"[/i][/green] [maroon]onMouseOut[/maroon][teal]=[/teal][green][i]"HidePopup([highlight]this[/highlight])"[/i][/green][b]>[/b]Hover over me #1![b]</a>[/b]

[b]<a[/b] [maroon]id[/maroon][teal]=[/teal][green][i]"hoverover2"[/i][/green] [maroon]style[/maroon][teal]=[/teal][green][i]"cursor:default;"[/i][/green] [maroon]onMouseOver[/maroon][teal]=[/teal][green][i]"ShowPopup(this)"[/i][/green] [maroon]onMouseOut[/maroon][teal]=[/teal][green][i]"HidePopup([highlight]this[/highlight])"[/i][/green][b]>[/b]Hover over me #2![b]</a>[/b]
Note that you have to specify the unit of measurement ( the modification marked with pink ).

Feherke.
 
Upvote 0 Downvote
It works! Thank you very much, I've been tinkering with this for days.
I don't exactly understand how
(/over(\d)/,'popup$1')
works, but I like it. :)
 
Upvote 0 Downvote
Hi

xenowing said:
I don't exactly understand how
(/over(\d)/,'popup$1')
Click to expand...
Well, hoveritem.id is a [tt]String[/tt] and the [tt]replace()[/tt] method performs a regular expression substitution :

searches for this :
[tt] [red].------- literal string 'over'[/red]
[red]|[/red] [green].--- captures what is matched between the parenthesis[/green]
[red]_|[/red] [green]/[/green][blue].--- a digit character ( '0'..'9' )[/blue]
[red]/ \[/red][green]|[/green][blue]/\[/blue][green]|[/green]
/[red]over[/red][green]([/green][blue]\d[/blue][green])[/green]/[/tt]

and replaces it with this :
[tt] [purple].------- literal string 'popup'[/purple]
[purple]_|_[/purple] [blue].--- the content of the 1[sup]st[/sup] captured group[/blue]
[purple]/ \[/purple][blue]/\[/blue]
'[purple]popup[/purple][blue]$1[/blue]'[/tt]

So 'hover[red]over[/red][blue]1[/blue]' is transformed to 'hover[purple]popup[/purple][blue]1[/blue]'. ( Matching the following digit too is needed to avoid replacing the first occurrence of 'over' like this : 'h[red]over[/red]over1' -> 'h[purple]popup[/purple]over1'. )


Feherke.
 
Upvote 0 Downvote
You explanation is very helpful. Thank you for teaching me.
 
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