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js get element by page name?

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tanaquil

tanaquil

Programmer
Jun 10, 2009
5
US
hey all - new member here - does anyone know a way to use the getElement to check the page name ?
i have an image map with rollover effect and want to keep the visibility if the page is the menu item clicked. does that make sense or do i need to be more detailed? any suggestions would be most appreciated - thanks!
tania
 
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I think document.title is what you're looking for:
Code: 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "[URL unfurl="true"]http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">[/URL]
<html xmlns="[URL unfurl="true"]http://www.w3.org/1999/xhtml">[/URL]
<head>
<title>This is a test</title>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<script type="text/javascript">

window.onload = function () {
   alert([!]document.title[/!]);
};

</script>
 
</head>
 
<body>
</body>
</html>

-kaht

 
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thanks for the reply kaht - i can't use the title because these pages use a common title header - the attribute i think i want to use is:

var sPage = sPath.substring(sPath.lastIndexOf('/') + 1);

bc this id's the page - and then use it to keep the menu item highlighted. does this make sense?
thanks again!
tania
 
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thanks - no, actually, that's what i'm trying still to do = by getting the page name, i use it like an id to control which menu item is highlighted. it's easy when the menu is a list, but this is an image map and i'm not sure how to link it this way - do you know what i mean? thanks much for the replies!
 
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can you provide some code so we can get a better understanding of exacly what it is that you want to acheive?

--------
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I have recently been semi-converted to ensuring all my code (well most of it) works in both javascript and non-javasc
 
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yeah, definitely - i'm using a script from oreilly to make an image map with rollover, only requiring two images for regular and over state - the javascript hides the over until the hotspot is accessed and then only shows through that piece of the image below:

function initMaps() {
if (document.getElementById) {
var mapIds = initMaps.arguments; // pass string IDs of containing map elements
var i, j, area, areas;
for (i = 0; i < mapIds.length; i++) {
areas = document.getElementById(mapIds).getElementsByTagName("area");

for (j = 0; j < areas.length; j++) { // loop thru area elements
area = areas[j];
area.onmousedown = imgSwap; // set event handlers
area.onmouseout = imgSwap;
area.onmouseover = imgSwap;
area.onmouseup = imgSwap;
}
}
}
}

// image swapping event handling
function imgSwap(evt) {
evt = (evt) ? evt : event; // equalize event models
var elem = (evt.target) ? evt.target : evt.srcElement;
var imgClass = elem.parentNode.name; // get map element name
var coords = elem.coords.split(","); // convert coords to clip
var clipVal = "rect(" + coords[1] + "px " +
coords[2] + "px " +
coords[3] + "px " +
coords[0] + "px)";
var imgStyle;

switch (evt.type) {
// case "mousedown" :
// imgStyle = document.getElementById(imgClass + "Down").style;
// imgStyle.clip = clipVal;
// imgStyle.visibility = "visible";
// break;
case "mouseout" :
document.getElementById(imgClass + "Over").style.visibility = "hidden";
// document.getElementById(imgClass + "Down").style.visibility = "hidden";
break;
case "mouseover" :
imgStyle = document.getElementById(imgClass + "Over").style;
imgStyle.clip = clipVal;
imgStyle.visibility = "visible";
break
// case "mouseup" :
// document.getElementById(imgClass + "Down").style.visibility = "hidden";
// guarantee click in IE
// if (elem.click) {
// elem.click();
// }
// break;
}
evt.cancelBubble = true;
return false;
}

then you refer to the area map and visibility this way:

<img src="images/menu.jpg" alt="header" name="header" width="800" height="115" style="position:absolute; top:80px; left:200px"
border="0" usemap="#header" id="headerUp"
visibility:visible" />
<map name="header" id="headerMap">
<area shape="rect" coords="282,12,439,29" href="#" />
<area shape="rect" coords="445,13,559,31" href="#" />
<area shape="rect" coords="576,12,635,29" href="#" />
<area shape="rect" coords="663,12,728,28" href="#" />
<area shape="rect" coords="744,13,790,29" href="#" />
<area shape="rect" coords="284,37,390,53" href="#" />
<area shape="rect" coords="398,36,535,54" href="#" />
<area shape="rect" coords="544,35,656,55" href="#" />
<area shape="rect" coords="659,35,730,55" href="#" />
<area shape="rect" coords="736,35,795,55" href="#" /></map>
<img id="headerOver" src="images/menuOver.jpg" width="800" height="115" border="0" style="position:absolute; top:80px; left:200px; visibility:hidden"

usemap="#header" />


what i want to do is keep the clipped visibility showing if you're on the page you selected - does this make more sense?
thank you!!
 
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Or
Code: 
location.href
will give you the page URL and you can parse it out however you want.

Lee
 
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thanks so much for the replies, lee and greg - so how would i integrate it in to the javascript, do you think - use the mouseup event ? i tried adding to the mouse up event the following code, but now the rollover isn't working at all - any suggestion you might have would be great -thanks!
case "mouseup" :
document.getElementById(imgClass + "Down").style.visibility = "hidden";
guarantee click in IE
if (elem.click) {
elem.click();
}


imgStyle = document.getElementById(imgClass + "Up").style;
imgStyle.clip = clipVal;
imgStyle.visibility = "visible";

break;
}
 
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