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JavaScript - Window.onload Problem
Hi,
I am learning Javascript and place the script tag in the head of my document and the code doesnt work as it loads the page. I understand that the window.onload function must call the function when the page has loaded but i cant seem to get it to work, I have wrapped my changeImage function in the onload function and it still doesnt work. where am i going wrong? I would like the script tag in the head of the document and understand how to use the window.onload function with my changeImage function. Thank you. Code: window.onload = function () {
changeImage();
}
var myImage = document.getElementById("image");
var imageArray = ["images/leaf.jpg","images/sky.jpg","images/tree.jpg"];
var imageIndex = 0;
function changeImage() {
myImage.setAttribute("src", imageArray[imageIndex]);
imageIndex++;
if (imageIndex >= imageArray.length) {
imageIndex = 0;
}
}// changeImage ... end
setInterval(changeImage, 3000);
I wrapped the whole of the code in the function but then in the console it doesnt do the setInterval it just stops at that break point. Similar TutorialsI am trying to pop up a window and then do stuff(set flags) when the content of the new window is done loading. For this I am trying to detect the window.onload of the pop-up child window but so far I am unsuccessful. I believe my problem is that the URL of child window is on different domain, than the one of the opener(parent) so that the window.onload is not being called. Thought this may change, at the moment I do not have access to the code for the page I'm opening up in the pop-up. Im pretty new to web development. Any help is appreciated. Heres my js code Code: //globals
var popupHandle = null;
var openingWindow = false;
function popWindow(URL){
var windowId="sameid";
if (openingWindow == true)
{
alert("Please wait, content is still loading")
return;
}
if ((popupHandle == null || popupHandle.closed)){ //is first time run or window was closed
openingWindow = true;
popupHandle = window.open(URL, '" + windowId + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=900,height=500');
popupHandle.onload = function(){
//this is the code that never executes even if I all I put in here is simple alerting
openingWindow = false;
windowHandle.focus();
};
}
else{// window still exists, reset attributes
if (popupHandle != null)
{
popupHandle.location.href = URL;
popupHandle.focus();
}
}
}
Note: The whole reason why I am doing this is because if its the first time I am clicking on the button that will open this pop up window and I click it repeatedly very quickly, a new pop up is opened for each time I clicked eventhough the window.open is supposed to reuse the window if it has the same windowId. The first call to window.open takes long enough to not have a window handle ready and this allows other clicks to get through. Hi I am in need of some help with my Javascript code, basicly I am creating a Javascript SDK for my site and I am trying to make is a little like jQuery in which you check if the document is ready such as $('document').ready(function(){}); which my SDK looks like this $.functions.push(function(){}); the only thing is when using it like this each function push gets added to the functions array which i then need to use on the documents load. With my SDK I use $.onload.ready();, which should act as window.onload and run all the functions with-in the array but I cant seem to get it to work. This is what I currently have. Code: $.functions =new Array();
$.onload = {};
$.onload.ready = function(){
if(window.onload !== undefined && window.onload != '')
{
window.onload=function(){for(var i=0;i<$.functions.length;i++){$.functions[i];}};
}
};
Can anyone help me out? Thank You DJCMBear EDIT: Don't worry I have found the solution and it works! This is the code for the onload. Code: $.onloadAdd = function(func)
{
if(typeof onload == 'function')
{
var oldonload = onload;
onload = function()
{
oldonload();
func();
}
}
else
{
onload = func;
}
};
$.onload = function(){
if(window.onload !== undefined && window.onload != '')
{
for(var i=0;i<arguments.length;i++)
{
$.onloadAdd(arguments[i]);
}
}
};
And this is the onload functions that get added to the list to be run. Code: $.onload(function(){if($.Class('Listener')){for(i=0;i<$.Class('Listener').length;i++){$.Class('Listener')[i].onclick=function(){alert($.getInfo(this).innerHTML);};}}},function(){if($.Class('Add')){for(i=0;i<$.Class('Add').length;i++){$.Class('Add')[i].innerHTML=$.Class('Add')[i].innerHTML+'...';}}});
Hei, On my website , I have certain things that happen in the function window.onload. I need them to happen only the first time when the user acceses the page . Do you have any idea how to do this? Thanks Hi everyone, I am at the last leg of getting my code to run. I have a window.onload function, but right now it is working only when I fill in all the field in the drop down list, hit a refresh and then hit submit button. What changes should I implement in the code? The code after the window.onload function runs as follows: Code:
window.onload = function() {
age = 0;
groom_age = getvalues();
caste = 0;
groom_caste = getvalues_1();
profession = 0;
groom_profession = getvalues_2();
bachelor = 0;
groom_bachelor = getvalues_3();
master = 0;
groom_master = getvalues_4();
doc = 0;
groom_doc = getvalues_5();
country = 0;
groom_country = getvalues_6();
color = 0;
groom_color = getvalues_7();
height = 0;
groom_height = getvalues_8();
marriage = 0;
groom_marriage = getvalues_9();
father = 0;
groom_father = getvalues_10();
switch(groom_age)
{
case "23" : age = 1.6;
break;
case "24" : age = 1.2;
break;
case "25" : age = 1.7;
break;
case "26" : age = 1.8;
break;
case "27" : age = 1.9;
break;
case "28" : age = 1.75;
break;
case "29" : age = 1.7;
break;
case "30" : age = 1.4;
break;
case "31-35" : age = 1.8;
break;
case "36-40" : age = 1.9;
break;
case "41-45" : age = 1.75;
break;
case "46-50" : age = 1.7;
break;
case "51+" : age = 1.4;
break;
default: age = 1;
}
switch(groom_caste)
{
case "Brahmin" : caste = 1.6;
break;
case "Bania" : caste = 1.2;
break;
case "Kayastha" : caste = 1.6;
break;
case "Kshatriya" : caste = 2.0;
break;
case "Dalit" : caste = 1.8;
break;
case "Maravar" : caste = 1.6;
break;
case "Mudaliar" : caste = 2.0;
break;
case "Jat" : caste = 1.8;
break;
case "Labanas" : caste = 1.6;
break;
case "Rajput" : caste = 1.6;
break;
default : caste = 1;
}
switch(groom_profession)
{
case "Engineer" : profession = 1.6;
break;
case "Doctor" : profession = 1.2;
break;
case "Lawyer" : profession = 1.65;
break;
case "CA" : profession = 1.7;
break;
case "IAS" : profession = 2.0;
break;
case "Family Business" : profession = 1.5;
break;
case "Engineer + MBA" : profession = 1.95;
break;
case "None of the above" : profession = 1.95;
break;
default: profession = 1;
}
switch(groom_bachelor)
{
case "BTech/BE/BS" : bachelor = 1.6;
break;
case "MBBS" : bachelor = 1.2;
break;
case "BA" : bachelor = 1.1;
break;
case "B.Com" : bachelor = 1.4;
break;
case "BSc" : bachelor = 1.9;
break;
case "BBA" : bachelor = 1.1;
break;
case "Diploma" : bachelor = 1.4;
break;
case "Certification Course" : bachelor = 1.4;
break;
default: bachelor = 1;
}
switch(groom_master)
{
case "MS" : master = 1.6;
break;
case "MBA" : master = 1.2;
break;
case "MHA" : master = 1.4;
break;
case "MTech" : master = 1.4;
break;
case "M.Ed" : master = 1.4;
break;
case "No Master degree" : master = 1.4;
break;
default: master = 1;
}
switch(groom_doc)
{
case "Doctor of Philosophy (Phd)" : doc = 1.6;
break;
case "Doctor of Medicine (MD)" : doc = 1.2;
break;
case "No Doctorate Degree" : doc = 1.4;
break;
default: doc = 1;
}
switch(groom_country)
{
case "India" : country = 1.6;
break;
case "USA" : country = 1.2;
break;
case "Any European Country" : country = 1.7;
break;
case "Australia" : country = 1.7;
break;
case "Canada" : country = 1.7;
break;
case "Any Country more developed than India" : country = 1.7;
break;
case "Any Country less developed than India" : country = 1.2;
break;
default: country = 1;
}
switch(groom_color)
{
case "Fairy White" : color = 1.6;
break;
case "Black" : color= 1.2;
break;
case "Wheatish (Almost White. Would need some Fair n Lovely)" : color= 1.4;
break;
case "Brown": color= 1.4;
break;
case "White": color= 1.9;
break;
case "Pitch Black (Not visible on a moonless night)" : color= 0.6;
break;
default: color = 1;
}
switch(groom_height)
{
case 'Less than 5\'4"' : height = 1.6;
break;
case '5\'4"' : height = 1.2;
break;
case '5\'5"' : height = 0.8;
break;
case '5\'6"' : height = 1.0;
break;
case '5\'7"' : height = 1.4;
break;
case '5\'8"' : height = 1.5;
break;
case '5\'9"' : height = 1.6;
break;
case '5\'10"' : height = 1.7;
break;
case '5\'11"' : height = 1.8;
break;
case '6' : height = 1.85;
break;
case '6\'1"' : height = 1.9;
break;
case 'Greater than 6\'1"' : height = 1.8;
break;
default: height = 1;
}
switch(groom_marriage)
{
case "0" : marriage = 1.6;
break;
case "1" : marriage = 1.2;
break;
case "2" : marriage = 0.4;
break;
case "More than 2" : marriage = 0.2;
break;
default: marriage = 1;
}
switch(groom_father)
{
case "Doctor" : father= 1.6;
break;
case "IAS" : father = 1.2;
break;
case "Engineer" : father= 1.7;
break;
case "Lawyer" : father= 1.65;
break;
case "CA" : father= 1.8;
break;
case "Engineer + MBA" : father= 1.9;
break;
case "Family Business" : father= 1.2;
break;
default : father = 1;
}
};
function processOrder() {
var total = age + caste + bachelor + master + doc + color + profession + father + marriage + height + country;
var pageNumber = Math.floor((20 - total) / 2 + 1);
// pageNumber = 6;
// alert(pageNumber);
window.open ("Page " + pageNumber + ".html");
}
</script>
<center> <INPUT TYPE="button" VALUE="Calculate" onClick="processOrder()">
</center>
I would really appreciate any kind of help. Thanks a lot! while decomplicating things I putted into single jsp code like that: Code: <script language="javascript" src="../js/A.js" type="text/javascript">
</script>
<script language="javascript" src="../js/B.js" type="text/javascript">
</script>
The prob here is that both A and B contains window.onload, and only the one from A gets executed. All things that come to my mind is back to complications, loosing track of things. Any advice ? Hello, I have a bit of javascript that automatically loads Shadowbox on load. It works perfectly in Firefox, Chrome but NOT IE. If I put a standard link to open Shadowbox does work in IE, so it's not the shadowbox, it's definitely the window.onload bit which isn't working. Here is my code. Code: <link rel="stylesheet" type="text/css" href="shadowbox/shadowbox.css">
<script type="text/javascript" src="shadowbox/shadowbox.js"></script>
<!--this bit is for a link to open the Shadowbox from a link elsewhere on the page -->
<script type="text/javascript">
Shadowbox.init({players:['swf']});
</script>
<script type="text/javascript">
window.onload = function() {
Shadowbox.open({
content: 'flash/flash002.swf',
player: "swf",
title: 'Open Shadowbox',
width: 1200,
height: 800,
});
};
</script>
This DOES work though, so I know it's not the Shadowbox with the issue Code: <a href="flash/flash002.swf" rel="shadowbox;height=800px;width=1200px">Open Shadowbox</a> Really appreciate your help! Nicola I am something of a javascript noob - I write mostly PHP and don't do a lot in javascript. Anyway, I Googled what I wanted to do and found an example that uses window.onload = function() { ... whatever ... } which seems to work fine, but the brower's error console tells me that the use of captureEvents (which I presume includes window.onload()) is deprecated and that I should use addEventListener instead. I've had a look on google for examples of addEventListener for the equivalent of document.onload and although I understand the difference and I see how both mechanisms work, I'm struggling to understand why one is better than the other? Please enlighten me! The site i am building uses a large content slider as its main navigation. There is an absolutely positioned header on the page, and the slider sits underneath. This all works perfectly once i am linking (to named anchors) within the same page However when an external pages links to one of the anchors, the top of the slider content is hidden underneath the header - the user need to scroll down to get the content to start below the header. Long story short, I have used the following to force the browser to scroll to the top of the page when it loads: <script type="text/javascript"> window.onload = function(){ window.scrollTo(0,0); } </script> This doesnt load until everything else on the page has loaded though, is there a way to force the browser to scroll to the top BEFORE everything else loads? Or better yet not to scroll at all but to make sure the window is positioned at (0,0) automatically when it loads? Also, this doesnt seem to be working at all in IE Thanks in advance! I don't get to use javascript as much as I would like, but I am having a problem with a page so I stripped out all the extras and got down to just the part I am having a problem with and I think this should fill the div with the id testingdiv when the page loads but it doesn't. Any help would be appreciated. Code: <script type="text/javascript">
function getClientList(listtype) {
document.getElementById('testingdiv').innerHTML = listtype;
}
window.onload = getClientList('own');
</script>
<!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" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<input type="hidden" name="hidden" id="hidden" value="99" />
<title>untitled</title>
</head>
<body>
<div id="testingdiv"></div>
</body>
</html>
Hi I've got a javascript that searches for a Youtube video. This script gets called by a window.onload action. The function actually works just fine, but IE (not in FF) still throws me an "Not Implemented" error at my window.onload action. the code is this: Code: window.onload = GetYoutubeVideo('Alice Cooper Poison');
Find it he http://www.muzikum.eu/en/123-3496-44...son-lyric.html I can't seem to get rid of it. Can anyone explain me why it's triggered? Even as the code does get executed it's still annoying me. thanks in advance Walter Is there a way to make 2 functions load at the same time using window.onload? I have to seperate functions which rotate images, then another that rotates text. Functions: showQuote() iAnimate() Code: <!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<script>
window.onload = function(){h = parseInt(document.getElementById( "div1" ).style.height);}
var t;
function addHeight(openAccordionID){
clearInterval(t);
document.getElementById(openAccordionID).style.height = h+"px";
h+=1;
t = setInterval("addHeight('"+openAccordionID+"')",10);
for(var x=1; x<h; x++)
if(h%(x*100)==0){clearInterval(t);}
}
</script>
</head>
<body>
<div id="div1" onclick="addHeight(this.id)" style="width: 200px; height: 20px; background-color: yellow;">Increase Height</div>
</body>
</html>
How can I still use the parameter "openAccordionID" in the blue-highlighted part? I tried, but it failed. Hi, I have my page here. There is a tab system on the page that uses javascript. View the source the see the javascript file (tabber9.compressed.js). Now, on my end, I am adding some tracking code. The code looks like this: Code: <SCRIPT TYPE='text/javascript' LANGUAGE='JavaScript'><!-- //
window.onload = initPage;
function initPage() {
if (this.GetCustomerGUID)
document.forms["Test"].elements["CustomerGUID"].value = GetCustomerGUID();
}
//--></SCRIPT>
The problem is, when I add this code to my footer, it breaks the tab system. The tabs don't work any more. I am not a JavaScript expert by any means (or else I would have known what the issue is! lol) but, I guess it has something to do with the window.onload function? I say that because I see the window.onload code in the tabber javascript as well. Any advice or help anyone can give would be greatly appreciated. Thanks in advance for any help! If I use a window opener to open a new window, is there a way to detect that the new window is finished loading before carrying out some other directive in the opener window? Can I access the remote window's onload event from the opener window? I need to know that the website has loaded before moving to the next page. something like: remoteWindow.onload = goToPage(url); Is this even possible? I found this beautiful fade-in/fade-out jQuery pop-up bubble and all I need to know is how to make the bubble animate on window.onload. If there's a better pop-up bubble than this that someone knows of offhand, that'd be great too. I haven't tested this one out and am a little wary about potential problems that the non-animated part of the bubble may or may not present. All I want to have happen is, when you visit the site, a div automatically fades in and stays near the top of the page for a minute to guide viewers to a specific area of the site, and then fades out. Thanks for any help!! Much appreciated. Hi, In our static few page website, when user open the home page, I want to open one "prompt" kind of window with my own input fields: e.g. One Simple Text Line One anchor link to external link One Text Box to input product key Ok Button Cancel Button. I want this "prompt" kind of window compulsory to attend. Means user will not be able to access the page without responding this window. According to user button pressed "OK" or "Cancel", I want to display the corresponding text in the home page. In short, it will be close to the "window.prompt" but customized and compulsory to respond. Thanks, Hello Can anyone help with the following problem On the following page http://www.stroudskittles.co.uk/signingon.html I have a Body onload event (to load the chained Menu) and a windows.onload event (to load the IFrame Ticker) If I open the page in Internet explorer both scripts function; however in Firefox I'm having problems. The Chained Menu works, however the IFrame Ticker does not display. Both events ahave ben placed on the boady tag. Can anyone advise how I can get both to display in Firefox Can anyone If anyone can help me with this problem I'd be very grateful. I'm trying to set a margin onLoad based on window size. http://jimbolgs.agilityhoster.com/handmade/test.html Thanks. Some people claim that the window.onload does not fire in some browsers, under some OS, when the page is re-loaded using the back button of the browser. The simple code is: Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Style-Type" content="text/css">
<meta http-equiv="Content-Script-Type" content="text/javascript">
<script type="text/javascript">
onload=function(){
alert('foo')
}
</script>
</head>
<body>
<a href="http://www.google.com">go Google then press the back button</a>
</body>
</html>
Open the document, click the link, then press the Back button of the browser. Surprisingly, in FF 3.6.3 (at least) the window.onload event is not read again, thus it does not fire the function. That is a severe issue, as a lot of JavaScript codes are based on onload event. Is it a bug? Does that happen only locally (I can not test it on a server this moment)? Are there any other browsers or other browsers' versions which act in the same way? Any thoughts? |
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