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Il nostro scopo è quello di caricare dinamicamente, all'interno di un componente HTML come ad es. un DIV, un contenuto diverso (ma che deve sempre appartenere allo stesso dominio). Tutto ciò lo si può fare con AJAX e con pochi semplici comandi.
Leggi il resto del documento per accedere direttamente alla pagina di esempio.
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<html>
<head>
<title>Test Load Dinamico con AJAX</title>
<head>Test Load Dinamico con AJAX</head>
<script type="text/javascript">
/***********************************************
* Dynamic Ajax Content- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit Dynamic Drive at http://www.dynamicdrive.com/ for full source code
***********************************************/
var bustcachevar = 0 //bust potential caching of external pages after initial request? (1=yes, 0=no)
var loadedobjects = ""
//var rootdomain = "http://"+window.location.hostname
//alert(rootdomain);
var bustcacheparameter = ""
function ajaxpage(url, containerid){
var page_request = false
if (window.XMLHttpRequest) // if Mozilla, Safari etc
page_request = new XMLHttpRequest()
else if (window.ActiveXObject){ // if IE
try {
page_request = new ActiveXObject("Msxml2.XMLHTTP")
}
catch (e){
try{
page_request = new ActiveXObject("Microsoft.XMLHTTP")
}
catch (e){}
}
}
else
return false
page_request.onreadystatechange=function(){
loadpage(page_request, containerid)
}
if (bustcachevar) //if bust caching of external page
bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
page_request.open('GET', url+bustcacheparameter, true)
page_request.send(null)
}
function loadpage(page_request, containerid){
if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
document.getElementById(containerid).innerHTML=page_request.responseText
}
function loadobjs(){
if (!document.getElementById)
return
for (i=0; i<arguments.length; i++){
var file=arguments[i]
var fileref=""
if (loadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
if (file.indexOf(".js")!=-1){ //If object is a js file
fileref=document.createElement('script')
fileref.setAttribute("type","text/javascript");
fileref.setAttribute("src", file);
}
else if (file.indexOf(".css")!=-1){ //If object is a css file
fileref=document.createElement("link")
fileref.setAttribute("rel", "stylesheet");
fileref.setAttribute("type", "text/css");
fileref.setAttribute("href", file);
}
}
if (fileref!=""){
document.getElementsByTagName("head").item(0).appendChild(fileref)
loadedobjects+=file+" " //Remember this object as being already added to page
}
}
}
</script>
<body>
<a href="javascript:ajaxpage('/index.php', 'contentarea');">www.mauriziogiglio.netsons.org</a>
<div id="contentarea"></div>
</body>
</html>