chciałbym aby w czasie ładowania strony, zanim zostanie wczytana pojawiła się informacja o ladowaniu. Znalazłem gdzieś coś takiego:
test.html:
Kod
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Test</title>
<script language="JavaScript" type="text/javascript">
function hideLoadingPage() {
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('loading').style.visibility = 'hidden';
}
else {
if (document.layers) { // Netscape 4
document.hidepage.visibility = 'hidden';
}
else { // IE 4
document.all.hidepage.style.visibility = 'hidden';
}
}
}
</script>
</head>
<body onload="hideLoadingPage()">
<div id="loading" style="position: absolute; left:0px; top:0px; background-color: #999999; layer-background-color: white; height: 100%; width: 100%;filter:alpha(opacity=80);-moz-opacity:.80; opacity:.80;">
<table width="100%" height="100%">
<tr>
<td align="center" valign="middle">
<table width="300" align="center" bgcolor="#FFFFFF" border="0" >
<tr>
<td align="center" style="filter:alpha(opacity=100);-moz-opacity:.99; opacity:.991;"><img src=./js/litebox-1.0/images/loading.gif></td></tr><tr><td align="center"><b>Loading...</b></td>
</tr>
</table>
</td>
</tr>
</table>
</div>
<!-- Tutaj właściwy kod strony -->
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Test</title>
<script language="JavaScript" type="text/javascript">
function hideLoadingPage() {
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('loading').style.visibility = 'hidden';
}
else {
if (document.layers) { // Netscape 4
document.hidepage.visibility = 'hidden';
}
else { // IE 4
document.all.hidepage.style.visibility = 'hidden';
}
}
}
</script>
</head>
<body onload="hideLoadingPage()">
<div id="loading" style="position: absolute; left:0px; top:0px; background-color: #999999; layer-background-color: white; height: 100%; width: 100%;filter:alpha(opacity=80);-moz-opacity:.80; opacity:.80;">
<table width="100%" height="100%">
<tr>
<td align="center" valign="middle">
<table width="300" align="center" bgcolor="#FFFFFF" border="0" >
<tr>
<td align="center" style="filter:alpha(opacity=100);-moz-opacity:.99; opacity:.991;"><img src=./js/litebox-1.0/images/loading.gif></td></tr><tr><td align="center"><b>Loading...</b></td>
</tr>
</table>
</td>
</tr>
</table>
</div>
<!-- Tutaj właściwy kod strony -->
</body>
</html>
Działa to ładnie gdy stronę ładuję poprzez bezpośredni link ale w chwili gdy chcę to załadować z innej strony za pomocą:
Kod
<a href="javascript:ajaxpage('test.html', 'rightcolumn');">TEST</a>
ze strony
index.html:
Kod
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Galeria</title>
<script type="text/javascript">
/***********************************************
* Dynamic Ajax Content- Š 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
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)
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("language","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("media","screen");
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>
<style type="text/css">
body{
margin: 0;
padding: 0;
}
#leftcolumn{
float:left;
width:150px;
min-height: 400px;
border: 2px solid black;
padding: 5px;
padding-left: 4px;
text-align: left;
background-color:#006600;
}
#leftcolumn a{
padding: 3px 3px;
display: block;
width: 100%;
text-decoration: none;
font-weight: bold;
border-bottom: 1px solid gray;
}
#leftcolumn A:Hover {
color : #FFFFFF;
background-color : #009900;
text-decoration : none;
}
#rightcolumn{
float:left;
width:750px;
min-height: 400px;
border: 2px solid black;
margin-left: 10px;
padding: 5px;
padding-bottom: 8px;
background-color:#FFFFFF;
}
* html #rightcolumn{ /*IE only style*/
height: 400px;
}
* html #leftcolumn{ /*IE only style*/
height: 400px;
}
A {
font-family : Verdana, Helvetica, Arial CE;
color : #888FF8;
text-decoration : none;
}
A:Visited {
font-family : Verdana, Helvetica, Arial CE;
color : #888FF8;
text-decoration : none;
}
BODY {
font-size : 7pt;
font-family : Verdana, Helvetica, Arial CE;
color : #000000;
background-colo: #ffffff;
background-attachment: fixed
}
TD {
font-size : 8pt;
font-family : Verdana, Helvetica, Arial CE;
color : #000000;
overflow : none;
}
</style>
<body>
<center>
<table>
<tr><td>
<div id="leftcolumn">
<a href="javascript:ajaxpage('test.html', 'rightcolumn');">TEST</a>
</div>
<div id="rightcolumn"><h3>Choose a page to load.</h3></div>
<td><tr>
</table>
</center>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Galeria</title>
<script type="text/javascript">
/***********************************************
* Dynamic Ajax Content- Š 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
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)
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("language","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("media","screen");
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>
<style type="text/css">
body{
margin: 0;
padding: 0;
}
#leftcolumn{
float:left;
width:150px;
min-height: 400px;
border: 2px solid black;
padding: 5px;
padding-left: 4px;
text-align: left;
background-color:#006600;
}
#leftcolumn a{
padding: 3px 3px;
display: block;
width: 100%;
text-decoration: none;
font-weight: bold;
border-bottom: 1px solid gray;
}
#leftcolumn A:Hover {
color : #FFFFFF;
background-color : #009900;
text-decoration : none;
}
#rightcolumn{
float:left;
width:750px;
min-height: 400px;
border: 2px solid black;
margin-left: 10px;
padding: 5px;
padding-bottom: 8px;
background-color:#FFFFFF;
}
* html #rightcolumn{ /*IE only style*/
height: 400px;
}
* html #leftcolumn{ /*IE only style*/
height: 400px;
}
A {
font-family : Verdana, Helvetica, Arial CE;
color : #888FF8;
text-decoration : none;
}
A:Visited {
font-family : Verdana, Helvetica, Arial CE;
color : #888FF8;
text-decoration : none;
}
BODY {
font-size : 7pt;
font-family : Verdana, Helvetica, Arial CE;
color : #000000;
background-colo: #ffffff;
background-attachment: fixed
}
TD {
font-size : 8pt;
font-family : Verdana, Helvetica, Arial CE;
color : #000000;
overflow : none;
}
</style>
<body>
<center>
<table>
<tr><td>
<div id="leftcolumn">
<a href="javascript:ajaxpage('test.html', 'rightcolumn');">TEST</a>
</div>
<div id="rightcolumn"><h3>Choose a page to load.</h3></div>
<td><tr>
</table>
</center>
</body>
</html>
to po kliknięciu linku ładuje się strona test.html ale niestety nie znika DIV - loading. Co przy bezpośrednim wywołaniu strony się dzieje. Wiec wygląda na to że poprzez załadowanie Ajaxem nie wykonuje się komenda z BODY onload pliku test.html
Jeszcze jedna uwaga apropos tego: chodzi o to aby onload zostało wykonane po całkowitym zakończeniou pobierania strony - strona test.html zawiera np. dużo grafik...
W jaki sposób można to obejść ?
Pozdrawiam
Walko