Solved

Javascript banner rotation

Posted on 2008-10-25
6
393 Views
Last Modified: 2012-05-05
I use the javascript below to rotate some banners.  I works fine, I just want to provide nav btns/links to stop the rotation, click to a specific banner and restart the rotation.

Thanks,
WD
<script type=text/javascript>

var _banners = new Array();

function addBanner(_bannerHTML){

  _banners[_banners.length?_banners.length:0]=_bannerHTML;

}

addBanner("<a href='contact_us.asp?Subject=Catalogue Request'><img border=0 alt='Request a Catalogue' src='images/banners/1.jpg'></a>");

addBanner("<a href='gallery_blurb.asp?catid=138'><img border=0 alt='Tanzanite Collection' src='images/banners/2.jpg'></a>");

addBanner("<a href='staffers.asp?catid=138'><img border=0 alt='Meet the Staff' src='images/banners/3.jpg'></a>");
 

var div2 = new NewDiv2(window, "banner", _banners[0],0,0,50,50,500,"ABSOLUTE");

var count=0; /* which one to start with */

function doIt() {

count++;

count%=_banners.length;

div2.setBody(_banners[count]);

}

setInterval('doIt()',10000);

</script>

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Comment
Question by:webdork
  • 3
  • 3
6 Comments
 
LVL 16

Expert Comment

by:sh0e
ID: 22805857

<script type=text/javascript>

var _banners = new Array();

function addBanner(_bannerHTML){

  _banners[_banners.length?_banners.length:0]=_bannerHTML;

}

addBanner("<a href='contact_us.asp?Subject=Catalogue Request'><img border=0 alt='Request a Catalogue' src='images/banners/1.jpg'></a>");

addBanner("<a href='gallery_blurb.asp?catid=138'><img border=0 alt='Tanzanite Collection' src='images/banners/2.jpg'></a>");

addBanner("<a href='staffers.asp?catid=138'><img border=0 alt='Meet the Staff' src='images/banners/3.jpg'></a>");

 

var div2 = new NewDiv2(window, "banner", _banners[0],0,0,50,50,500,"ABSOLUTE");

var count=0; /* which one to start with */

function doIt() {

count++;

count%=_banners.length;

div2.setBody(_banners[count]);

}

var si = setInterval('doIt()',10000);
 

function restartBanner(start){

clearInterval(si);

count=start;

si = setInterval('doIt()',10000);

}

</script>

<input type="button" onClick="restartBanner(1)" value="Restart at position 1"></input>

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Author Comment

by:webdork
ID: 22807560
Nothing happens
0
 
LVL 16

Expert Comment

by:sh0e
ID: 22808065
Need more details.  Does the button not do anything?  Did you copy and paste the code?
I implemented the code as a working page and found no problems.

<script type=text/javascript>

var _banners = new Array();

var divid; var si;

var count=0;
 

function addBanner(_bannerHTML){

  _banners[_banners.length?_banners.length:0]=_bannerHTML;

}

addBanner("<a href='contact_us.asp?Subject=Catalogue Request'><img border=0 alt='Request a Catalogue' src='images/banners/1.jpg'></a>");

addBanner("<a href='gallery_blurb.asp?catid=138'><img border=0 alt='Tanzanite Collection' src='images/banners/2.jpg'></a>");

addBanner("<a href='staffers.asp?catid=138'><img border=0 alt='Meet the Staff' src='images/banners/3.jpg'></a>");

 

function doIt() {

count%=_banners.length;

divid.innerHTML=_banners[count];

count++;

}
 

function loads(){

divid = document.getElementById('div2');

doIt();

si = setInterval('doIt()',1000);

}

 

function restartBanner(start){

clearInterval(si);

count=start;

doIt();

si = setInterval('doIt()',1000);

}

</script>
 

<body onload="loads()">

<input type="text" value="1" id="input1"></input>

<input type="button" onClick="restartBanner(document.getElementById('input1').value)" value="Restart at position (starts at 0 index)"></input>

<div id='div2'></div>

</body>

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Author Comment

by:webdork
ID: 22808186
Yeah Ok now it works. And I can see how to make links to each individual banner.  Can you add a start and stop?

Thanks,

WD
0
 
LVL 16

Accepted Solution

by:
sh0e earned 500 total points
ID: 22808450

<script type=text/javascript>

var _banners = new Array();

var divid; var si;

var count=0;

 

function addBanner(_bannerHTML){

  _banners[_banners.length?_banners.length:0]=_bannerHTML;

}

addBanner("<a href='contact_us.asp?Subject=Catalogue Request'><img border=0 alt='Request a Catalogue' src='images/banners/1.jpg'></a>");

addBanner("<a href='gallery_blurb.asp?catid=138'><img border=0 alt='Tanzanite Collection' src='images/banners/2.jpg'></a>");

addBanner("<a href='staffers.asp?catid=138'><img border=0 alt='Meet the Staff' src='images/banners/3.jpg'></a>");

 

function doIt() {

count%=_banners.length;

divid.innerHTML=_banners[count];

count++;

}

 

function startBanner(){

divid = document.getElementById('div2');

doIt();

si = setInterval('doIt()',1000);

}
 

function stopBanner(){

clearInterval(si);

}

 

function restartBanner(start){

stopBanner();

setBanner(start);

startBanner();

}
 

function setBanner(start){

count=start;

}
 

function clearBanner(){

divid.innerHTML='';

}
 
 

</script>

 

<body onload="startBanner()">

<input type="text" value="1" id="input1"></input>

<input type="button" onClick="restartBanner(document.getElementById('input1').value)" value="Restart at position (starts at 0 index)"></input>

<input type="button" onClick="startBanner();" value="Start"></input>

<input type="button" onClick="stopBanner();" value="Stop"></input>

<input type="button" onClick="clearBanner();" value="Clear"></input>

<div id='div2'></div>

</body>

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Author Closing Comment

by:webdork
ID: 31510032
You're the man.

Thanks
0

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