I'm having some problems with getting one of my site pages with IE8. It works fine in IE9, Safari (both PC & Mac) & Firefox (Mac). I'm using a find(tag1).html(tag1) call sequence to do a title substitution, but I get the following error in IE8 when I debug it in the IE script debugger, and this in the html(tag2) function:
Unexpected call to method or property access
The find(tag1) function seems to return the enclosing object (i.e. #sidebar), rather than the nested object #sidebarheader, and this causes problems when later making the html(tag2) call.
I've created a representative test case as follows:
<!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>JQuery .find() test case</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.4.js"></script>
<script type="text/javascript">
function UpdateHeader() {
$('#sidebar').find('header').html("New Title"); // IE8, nesting div's in the find fct. will not discover the child div
}
document.ready = UpdateHeader;
</script>
</head>
<body>
<div style="height: 400px; width: 390px">
<div id="jqm-home">
<div id="page">
<div id="sidebar">
<div id="sidebarheader">
<header>Old Title</header>
</div>
</div>
</div>
<p onclick="UpdateHeader();">Click to update title</p>
</div>
</div>
</body>
</html>
And here is the jsFiddle test case:
http://jsfiddle.net/bnmcK/21/
Has anybody a suggestion on how to get this to work in IE8?
In order to support the new HTML 5 elements in older versions of IE (8 and below), there's a handy trick, which involves creating a dummy element before running your script.
So, simply calling document.createElement('header'); in your page will solve the problem, see here.
For the full explanation, this post does a nice job of providing an explanation.
Also, html5shiv is a project that solves this problem for other elements too.
<header> is a HTML5 tag, which IE8 doesn't know about (IE9 however, supports this tag). Since you're declaring XHTML 1.0 transitional, I'd suggest using a <h1> tag instead, which will work just fine in IE8.
Related
I must be missing something, but I can't figure it out what. I have simple custom element implemented with polymer:
<polymer-element name="test-elem">
<template>
<content></content>
<div id="container">
<div class="deepinside">
TECK ... CHEST
</div>
</div>
</template>
<script>
Polymer('test-elem', {
applyAuthorStyles: false,
});
</script>
</polymer-element>
I then use it in a simple page:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
<script src="libs/polymer.min.js"></script>
<link rel="import" href="test-elem.html">
<style>
.deepinside { color: red; }
</style>
</head>
<body>
<test-elem>Hi</test-elem>
</body>
</html>
The content of the element's inner div (with class="deepinside") is displayed in red. If I understand correctly, this shouldn't happen (see this doc). Note that I explicitly declared applyAuthorStyles: false in the element's constructor (it shouldn't be necessary, cause it is the default behavior). I don't understand why the external CSS is affecting an element in the shadow DOM. I've even tried specifying the shadowdom attribute explicitly in the element's definition, but the result is the same.
What am I missing?
FWIW, I'm running Chrome Version 31.0.1650.57 on OS X 10.7.5.
This is an known limitation of the Shadow DOM polyfill. It does a pretty good job of preventing component styles from bleeding out, but it doesn't do the same for the other way around.
Here's a codepen for your use case. It works as you intend in Chrome 33.0.1717.0 canary (for which Polymer doesn't polyfill Shadow DOM), but not in 31.0.1650.57.
I'm testing a web page that hides and unhides a div container when a different one is clicked on. I tested this is Chrome and it worked nicely, but after I put it on my web server I get undefined errors. When I test it in Firefox from the web server, it works fine. It works fine with Chromium in Lubuntu, but Chrome in Windows is giving me an error.
<!DOCTYPE html PUBLIC
"-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Chrome test</title>
<meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
<script type="text/javascript">
function hideDiv(nameId) {
var grouping = document.getElementById(nameId);
if(grouping.style.display == 'none') {
grouping.style.display = '';
} else {
grouping.style.display = 'none';
}
}
</script>
</head>
<body>
<div id="group">
<div id="header" onclick="hideDiv('failingtoclose');">
<span>Testing</span>
</div>
<div id="failingtoclose">
<span>More testing</span>
</div>
</div>
</body>
</html>
The warning the developer's tools gives me:
'window.webkitStorageInfo' is deprecated. Please use 'navigator.webkitTemporaryStorage' or 'navigator.webkitPersistentStorage' instead.
and the error:
Uncaught TypeError: Cannot read property 'display' of undefined (Line 9)
The web server is running apache 2.2.22 on Ubuntu.
it's working fine in chrome on windows (version 30.0.1599.69 m) and I doubt it has to do with the server since there is no interaction going on, at least in the code you provide. Changing the doctype to standards mode (<!DOCTYPE html>) might help, since some browsers get confused otherwise (though I doubt chrome does).
I have developed a dragable div with an image inside using jquery. The script is working perfectly in Firefox, chrome but not it IE6. could you please help me to fix this issue
check the web page here : my web page
Thank you very much for your consideration.
IE uses clientX and clientY instead of pageX and pageY. Some people fix this by doing the following:
//if IE, then:
if (e.srcElement) {
e.pageX = oEvent.clientX + document.body.scrollLeft;
e.pageY = oEvent.clientY + document.body.scrollTop;
}
//rest of event handler goes here
I would probably not write the code myself. jQuery UI provides a $(...).draggable() method that should work, and is cross-browser tested. You can even custom build a jQuery UI download that will only include the components you want.
http://jqueryui.com/demos/draggable/
http://jqueryui.com/download
Unless you expect a lot of your visitors to use it - just drop IE6 support. Keeping sites IE6 compatible either increases code redundancy or degrades quality.
Since you're already using jQuery, why not use jQuery UI's draggable component? This way, you don't have to deal with all the mouse down calculations. I switched your site's code to use jQuery UI's draggable functionality and it was pretty quick and required a lot less code.
Here's the code I used:
<!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>jQuery Drag and drop</title>
<style type="text/css">
#dv {
position: absolute;
cursor: move;
}
</style>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.4.2.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.2/jquery-ui.min.js"></script>
<script language="javascript">
$(document).ready(function() {
$("#dv").draggable({
cursor: 'crosshair'
});
});
</script>
</head>
<body>
<div id="dv" style="position:absolute;left:300px;top:200px;">
<img src="http://www.mejoyal.com/jquery/drupal.png" />
</div>
</div>
</body>
</html>
Hope this helps!!
I've got simple html on Login.aspx with an ActiveX object:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head><title></title>
<script language="javaScript" type="text/javascript">
function getUserInfo()
{
var userInfo = MyActiveX.GetInfo();
form1.info.value = userInfo;
form1.submit();
}
</script>
</head>
<body onload="javascript:getUserInfo()">
<object id="MyActiveX" name="MyActiveX" codebase="MyActiveX.cab" classid="CLSID:C63E6630-047E-4C31-H457-425C8412JAI25"></object>
<form name="form1" method="post" action="Login.aspx">
<input type="hidden" id="info" name="info" value="" />
</form>
</body>
</html>
The code works perfectly fine on my machine (edit: hosted and run), it does't work on the other: there is an error "Object doesn't support this property or method" in the first line of javascript function. The cab file is in the same folder as the page file. I don't know javascript at all and have no idea why is the problem occuring. Googling didn't help. Do you ave any idea?
Edit: on both machines IE was used and activex was enabled.
Edit2: I also added if (document.MyActiveX) at the beggining of the function and I still get error in the same line of code - I mean it looks like document.MyActiveX is true but calling the method still fails
I think the onload event is making the function to run even before the ActiveX object is loaded. You may try the following instead:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title></title>
<script language="javaScript" type="text/javascript">
function getUserInfo(){
if(document.MyActiveX){
var userInfo = MyActiveX.GetInfo();
form1.info.value = userInfo;
form1.submit();
}
}
</script>
</head>
<body>
<object id="MyActiveX" name="MyActiveX" codebase="MyActiveX.cab" classid="CLSID:C63E6630-047E-4C31-H457-425C8412JAI25"></object>
<script for="window" event="onload" language="JavaScript">
window.setTimeout("getUserInfo()", 500);
</script>
<form name="form1" method="post" action="Login.aspx">
<input type="hidden" id="info" name="info" value="" />
</form>
</body>
</html>
Now the getUserInfo() function will start to run 500 milliseconds after the page is loaded. This must give some time for the ActiveX object to be loaded.
IE8 manages access to the ActiveX on domain level.
To fix it:
IE8, Tools -> Manage Add-ons
In "Toolbars and Extensions" find your ActiveX
Right click - More information
Click - Allow on all sites
Enjoy
maybe the browser on the other machine does not support activeX? just a wild guess
Maybe the ActiveX needs some prerequisite (For example CRuntime) that isn't present on the other machines? Have you tried running depends for the Activex on the hosting machine?
Maybe the other machine has a virus scanner or similar which silently prevents ActiveX use?
I'm getting more into jQuery and so have set up a HTML/Javascript/CSS base site which I use for all my tests.
Since these tests will eventually turn into PHP and ASP.NET MVC websites, I want to use this opportunity to get the basics down right again for modern browsers and web standards before building the scripting languages on top of it.
I've selected to use:
XHTML 1.0 Strict
UTF-8 encoding
as few CSS references as possible (put everything in 1 CSS file for loading speed)
as few Javascript references as possible (1 javascript file plus the jquery code base reference - I assume using the Google jQuery code base is best practice for speed)
I check my code as I build it with the http://validator.w3.org
Is there anything else I need to consider?
Here is an example of one of my test websites:
index.htm:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8"/>
<title>Text XHTML Page</title>
<link href="css/main.css" rel="stylesheet" type="text/css" media="all"/>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript" src="javascript/main.js"></script>
</head>
<body>
<h1 class="highlightTitle">Text</h1>
<p class="main">First</p>
<p>Second</p>
<p id="selected" class="regular">Third</p>
<p>Fourth</p>
<form action="">
<div>
<input type="button" value="highlight it" onclick="highlightIt();countThem()" />
<input type="button" value="highlight title" onclick="highlightTitle()" />
<p>here is another paragraph</p>
</div>
</form>
</body>
</html>
main.cs:
p.highlighted {
background-color:orange;
}
h1.highlightTitle {
background-color:yellow;
}
h1.deselected {
background-color:#eee;
}
p.regular {
font-weight: bold;
}
main.js:
google.load("jquery", "1.3.2");
function highlightIt() {
$('#selected')
.toggleClass('highlighted');
}
function countThem() {
alert("there are " + $("p.main").size() + " paragraphs");
}
function highlightTitle() {
$("h1").toggleClass("deselected");
}
Personally I would bind to the click event via jQuery to ensure nice separation, like this:
$("#yourId").bind("click", highlightIt);
This way you can bind to multiple event handlers. If you just use onclick AFAIK you can only ever use one handler.
BTW you can also use custom event and event namespaces:
$("#yourId").bind("beforeHighlighting", doSomething);
is triggered by
$("#yourId").trigger("beforeHighlighting");
and
$(".hasAHelptext").bind("helptext.click", showHelptextFct);
$(".hasAHelptext").bind("click", otherFct);
// will only remove the showHelptextFct event handler
$(".hasAHelptext").unbind("helptext.click");
HTH
Alex
Move the <script> blocks to the bottom of the page.
With regard to CSS and JS files in general, I wouldn't combine all JS files to a single file during development. It gets very hard to develop in one big JS file. Rather use a module that combines them on-the-fly or during deployment.
I usually go with (both CSS and JS):
one general file:
project.css
and one per page:
project_welcome.css
and any special components (login controls, ad area views etc) have a seperate one as well.
That way you can apply some organizing techniques and won't go crazy managing that single large file.
HTH
Alex
I would recommend putting the JS calls below the body tag. If your scripts are hanging, then the page can load and let the behavior (JS) load after the fact. I've noticed that speed greatly improves with this method.
Check this out: http://stevesouders.com/hpws/rule-js-bottom.php