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Monday, October 6, 2008

Swap Images by XML using XMLHTTP Request

Calling XML file into HTML Page using XMLHTTP Request or ActiveXOject
Here, we have used some features for calling xml file into html document with the help of ajax. In the example mentioned below, we called xml nodes by using
item(0).firstChild.nodeValue

Below find the javascript code as a Example, as a result it shows toggle images effects.

Javascript file Source:

<script type="text/javascript">
function make()
{
var req;

if (window.XMLHttpRequest)
{
req = new XMLHttpRequest();
}
else if (window.ActiveXObject)
{
req = new ActiveXObject("Microsoft.XMLHTTP");
}

req.open("GET", "image.xml", true);
//req.load("ajax-get.xml");


req.onreadystatechange = function()
{
if(req.readyState == 4)
{
//alert(imgsrc);

var doc = req.responseXML;
var cont=document.getElementById("data");
var imgsrc=document.getElementById("pic");
var thumb=document.getElementById("pic_s");
var clickhere=document.getElementById("alink");

//var test = doc.getElementsByTagName('thumb');
var smallpic = doc.getElementsByTagName('thumb');
var lnkxml = doc.getElementsByTagName('link');

imgsrc.src = doc.getElementsByTagName('image').item(0).firstChild.nodeValue;
imgsrc.alt = doc.getElementsByTagName('alt').item(0).firstChild.nodeValue;
thumb.src = smallpic.item(0).firstChild.nodeValue;
clickhere.href = lnkxml.item(0).firstChild.nodeValue;


var rot=document.getElementById("spn1");
rot.innerHTML= smallpic.item(0).firstChild.nodeValue;

thumb.onclick=function()
{

//if(thumb.src==smallpic.item(1).firstChild.nodeValue)
if(rot.innerHTML==smallpic.item(1).firstChild.nodeValue)
{
imgsrc.src = doc.getElementsByTagName('image').item(0).firstChild.nodeValue;
imgsrc.alt = doc.getElementsByTagName('alt').item(0).firstChild.nodeValue;
thumb.src = smallpic.item(0).firstChild.nodeValue;
clickhere.href = lnkxml.item(0).firstChild.nodeValue;

rot.innerHTML= smallpic.item(0).firstChild.nodeValue;
}
else
{
imgsrc.src = doc.getElementsByTagName('image').item(1).firstChild.nodeValue;
imgsrc.alt = doc.getElementsByTagName('alt').item(1).firstChild.nodeValue;
thumb.src = smallpic.item(1).firstChild.nodeValue;
clickhere.href = lnkxml.item(1).firstChild.nodeValue;

rot.innerHTML= smallpic.item(1).firstChild.nodeValue;
}
//alert(thumb.src);
};
}


};

/* else if(req.readyState<4)
{
shots.innerHTML="Loading...";
}*/
req.send(null);
}

</script>


XML file Source:

<?xml version="1.0"?>
<root>
<image>images/img-1.jpg</image>
<thumb>images/thumb-1.jpg</thumb>
<alt>XML</alt>
<link>http://javascript-guru.blogspot.com/search/label/ajax/</link>
<image>images/img-2.jpg</image>
<thumb>images/thumb-2.jpg</thumb>
<alt>Ajax</alt>
<link>http://javascript-guru.blogspot.com/</link>
</root>

11 comments:

dorsey said...

wow, that is great one and it is very good specially for me in website design.

Online Marketing Company said...

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I am also interested in latest news, sometimes i posted on my blog.....

Joomla Website Designer said...

The script for image swapping is great.I have an expertise in Joomla Design but not in Java Script.Hope you would provide more new & interesting scripts

seo minneaplis said...

Very Nice Blog
its really good
this blog explain very good concepts

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Notbook Repair said...

Thanks for the information. This is a great post.

Anonymous said...

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sincerely
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p.s. English is not my native language, so sorry for any mistakes :)

DVD Printing said...

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joomla web design said...

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incion said...

Great post for web developers .I have bookmarked your page for the further reference and also implementing the process mentioned in your tutorial.
Professional Web Design

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