Changing SRC With Javascript?
Aug 24, 2006
Basically, I'm trying to make a "chat-like" updater with javascript.
html.html includes the following:
<html>
<head>
<script>
var t;
function getData () {
document.getElementById("dataStore").href = "test2.html";
}
function update (message) {
getData ();
document.getElementById("txt").innerHTML= message;
t = setTimeout ("update ()",1000);
}
</script>
</head>
<body onload="getData()">
<div id="txt">hello</div>
<script id="dataStore" type="text/javascript"></script>
</body>
</html>
The file that it should get variables from is from test2.html, which is below:
var updateData = "hello!dasd";
update (updateData);
For this example, basically - I want javascript to change the "hello" in test.html to "hello!dasd" found in a variable in test2.html. This should keep asking for new updates from test2.html (which will be dynamic with php).
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Mar 29, 2006
This should be simple, but can I change parameters like the url coming
in:
www.testpage.com?test1=a
<script>
document.setParam("test1", "b");
</script>
something like that? I want the parameter to change based on the code..
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Feb 17, 2005
I am looking at ways of altering the appearance of web pages by calling alternate external stylesheets. This has obvious use in catering for accessibility issues.
There are existing sites that offer the facility to change font size, font colour, background colour, but these use server-side code. I would like to do this using client-side code, because I want to intergrate this with an HTML-based virtual learning environment (VLE) that is unlikely to accept server-side code.
I can obviously call a second stylesheet, which overrides that called in the <head> part of the HTML code. However, I cannot do this by user control using an <a href "javascript" ... call.
What is going wrong? As I have indicated in the comments in the file, the 'document.write' statement works in its own right to call a new CSS file. The function also works in its own right. However, the href doesn't do what I expected.
However, that is just the start. If I can get this to work, I would like a way of passing the 'new' stylesheet to other pages, so that the user selects their options once and then sees the same appearance in all pages in the VLE.
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Mar 23, 2006
I have a small problem this my javascript. I want it to change the url/src of an iframe I have on the screen, but I can't find anything that works.
var newiframepath = "http://newURL.htm";
frames['iframeName'].location.replace(newiframepath);
I also have this (again doesn't work):
var newiframepath = "http://newURL.htm";
iframeName.location.replace = (newiframepath);
Can anyone help?
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Jul 4, 2006
I have bigpage.html that has the text "click" in it. Also, it contains the iframe small.html.
In small.html there is the text "visible"
How do you get it so that when you click on "click", "visible" changes from black(default) to red?
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Jul 29, 2006
I have a border around some images. Basically what I need it to do is change colors when you click on one, and deselect the old one.
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Jul 23, 2005
Is there a way to change the displayed text on a web page using some
combination of Javascript and DHTML? NOT in a text box. As far as I
know (with my limited knowledge) the only way you can do this is with
a textbox or images, which is not what I'd like to do. There's gotta
be a way to do this, right?
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Jul 20, 2005
I would like to be able to write some code in Javascript preferably
(PHP is also all right) which allows the admin of a website to be able
to change stylesheet attributes from a GUI browser interface without
having them to change the text file themselves. (i.e., working on the
supposition that the admin is IT illiterate). Simple things like
table heading colours, backgrounds, font sizes need to be changed this
way.
The browser should then read from the changed textfile the next time
the site is refreshed and it should therefore be permanent. Is this
at all possible? If so, how do I update the textfile?
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Apr 22, 2006
This may seem like a very strange question but is there a way to change to a random song in itunes using javascript?
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Sep 27, 2006
I have the following code:
<script language="JavaScript">
function func1() {
alert("func1 invoked");
}
function func2() {
alert("func2 invoked");
}
function changeFunction() {
var img = document.getElementById('img');
if (window.addEventListener) { // Mozilla, Netscape, Firefox
img.addEventListener('click', func2, false);
}
else {// IE
img.attachEvent('onClick', func2);
}
}
</script>
<img id="img" src="test.jpg" width="10" height="10" onClick="func1();"></img>
when the image is clicked with the mouse, function func1 is invoked as expected. When I call function changeFunction, I want to change the code that is invoked when the image is clicked from func1 to func2. Instead, both are invoked because addEventListener and attachEvent add an additional handler instead of setting one.
I am looking for a way to change the handler from one function to another. Can anyone think of a solution probably using removeEventListener?
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Jan 31, 2007
I want to change from:
a:hover { text-decoration:none; color:black; }
to
a:hover { text-decoration:underline; color:blue; }
using javascript ....
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May 22, 2002
how would i go about changing the background of a row in a table that has colums when a check box is clicked...i can change the colour of a single column but how can i change all the columns in a row? ive heard about this "get prarentnode" thing but i dont know how to use it.
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Jul 20, 2005
I have a question if it is possible to manipulate the settings of
character encoding in Ms Internet Explorer 5.0, 5.5 and 6.0. The
problem is that the default instalation of Ms IE seems to have hard
selected default encoding to "Western European (ISO)", which means
iso-8859-1. When browsing pages with some Central/Eastern European
characters these are converted to iso-8859-1 so displayed wrong.
I would suppose the "auto-select" option should be default, so the
browser can select the right encoding according to the meta-tags in
the head of webpage. But this is apparently not true.
Please, is it possible to use JavaScript or Java applet to get the
information about the current client character encoding settings
and/or change it to the "auto-select" value ? How to do this ?
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Oct 17, 2007
I have two text boxes one with months in "January, Febuary..." but as not every month has the same ammount of days i need the second select box to change to instead of having options 1-30 it has 1-28 or what ever depending on what month is selected.
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Jul 23, 2005
does anyone know of any script which can edit the group attributes in
active directory.
for use this script to set the group setting such that this group only
has access to a specific folder.
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Sep 25, 2004
For a application I am writting I need to make some table columns apear and disapear by clicking on a link. I do this by changing the "style" property in the <td> tag.
The HTML is generated by ASP.NET, which automaticly sets the style property of the <td> tag to the right value. and makes links to the right Javascript function call to change a specific property.
This is the HTML output of 2 table columns: Code:
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Jan 12, 2011
I currently have a normal link like Code:<a href="http://sitepoint.com" class="link">sitepoint</a> and when a user clicks on it I want to be able to change the "link" class to a different class. However, I don't want to add anything to the actual link html. Is it possible to do this using javascript without modifying the original link code?
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Feb 2, 2011
I am trying to dynamically clear the value of a form input field and then submit the form.When I used $('#my_field').val('') to clear the field, it was cleared on the screen but when the form was submitted the original value of the input field was posted.My browser is FireFox and I can see using FireBug that when the field is cleared, firebug is still showing the html code with the old value. E.G. <input type="text" value="old_value" />The same situation occurred if I used $('#my_field').attr('value', '') to clear the field.The same situation occurred if I actually changed the value of the field rather than just clearing it.To work around this problem I ended up using the $('#my_field').removeAttr('value') to clear the field before it was submitted.
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May 7, 2009
I am a complete novice when it come to Javascript. I copied the script for displaying random images at a specific interval (from javascriptkit.com). I would appreciate knowing whether the following is possible:
The pages are based on tables, so the parts that change are all cells.
1. Can I define text instead of an image in the array? i.e. can I have the image change to say an apple in one cell and the next cell have text explaining what an apple is?
2. Would it be possible to put a countdown timer for when the image/text is going to change?
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Jul 6, 2011
Ive got a small image of a power button and when pressed the inner section on the button changes to yellow, but when its pressed down Im also trying to get part of my H1 (main header logo title) to change to yellow.
Ive created a span with an id surrounding the letters of the H1 that I want to change, the id being : "power";
The javascript that I have come up with so far and works is as follows:
<img id="poweron" src="http://www.sitepoint.com/forums/images/power.png" alt="Power on button" onmousedown="this.src='images/poweron.png';" onmouseup="this.src='images/power.png';"/>
I understand Im not really supposed to be using inline JS, and I know Ive got to create a function for the onmousedown event to trigger changing the H1 text, so am I under the right impression that the JS so far written is redundant and will have to be re-written so thats contained within a script placed just before the closing </body> and an external script for invoking the main function ?
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Jul 23, 2005
I'm working on some code and am running into brick walls. I'm trying
to write out Javascript with Javascript and I've read the clj Meta FAQ
and didn't see the answer, read many similar posts (with no luck
though), and searched through the IRT.ORG Faqs
(www.irt.org/script/script.htm).
The Javascript is designed to open an popup window and then inside that
window call another script which will resize that window. There may be
another way around this but the reason I tried this approach initially
was that I wanted to call the onload handler in the popup window to
resize the image only after the image had completely loaded. I've had
some code in the primary Javascript file (showimage.js) before that
works if the image has been cached but on the first load, it doesn't
resize properly which tells me it is probably because it is trying to
resize the window based on the image size but it isn't completely known
at that point. So I removed that code and tried placing the resizing
code in the second Javascript file (resizewindow.js). BTW I've tried
other code to open a popup image and automatically size it ie Q1443 at
irt.org but that doesn't do exactly what we need.
Even if there is another way to do this with one file, I still want to
figure out why this isn't working in case I run into it in the future.
I thought what I would need to do to use document.writeln to write
Javascript would be to escape any special characters and to break
apart the script tag ie
document.writeln('</SCRIPT>');
would become
document.writeln('</SCR' + 'IPT>');
I have a HTML page and 2 Javascript files. All files are in the same
directory and have permissions set correctly.
Here are the 3 files (keep in mind wordwrap has jacked up the
formatting):
index.html
----------
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Test</title>
<SCRIPT type="text/javascript" LANGUAGE="JavaScript1.1"
SRC="showimage.js">
</SCRIPT>
</head>
<body>
Click the house<BR>
<A ONCLICK="newWindow1('house1.jpg','Nice House')"><IMG
SRC="house1thumb.jpg"></A>
</body>
</html>
showimage.js
------------
function newWindow1(pic,sitename)
{
picWindow=window.open('','','width=25,height=25,sc rollbars=1,resizable=1');
picWindow.document.writeln('<html> <head>');
picWindow.document.writeln('<SCR' + 'IPT type="text/javascript"
LANGUAGE="JavaScript1.1" SRC="resizewindow.js"></SCR' + 'IPT>');
picWindow.document.writeln('</head>');
picWindow.document.writeln('<body onload="resizewindow();">');
picWindow.document.writeln('<img src=' + pic + '>');
picWindow.document.writeln('</body> </html>');
picWindow.document.close();
}
resizewindow.js
---------------
function resizewindow()
{
// Do resizing here.
// Right now this isn't being executed
alert("resizing window");
}
Can anyone provide some pointers as to why this javascript is failing?
I'm using IE6 on Win2k and when I click on the image to open the popup
window, it does open the window but it is white with no content and the
system immediately goes from about 4% CPU usage to 100% and
consistently stays there until I kill that window with the task
manager.
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Jul 23, 2005
Attached is a simple HTML file that adds and delete rows. In the add
row function I set an attribute "onClick" this triggers the
testMessage() function. When I try this in Firefox it works just fine
however on IE it just refuses to work.
What is interseting is the ROW that already exists has a similar
'onClick' event which works when the page is loaded, but subsequent
"row" additions to the table to not work in IE. Code:
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Feb 19, 2007
two possibilities or the attribute type of script:
text/javascript (the one i usually use) application/x-javascript
what are the differencies between both?
depends on the html content?
for example html 4.0.1 versus xhtml 1.1?
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May 25, 2005
I'm getting errors in Firefox everytime I try to run this frame resize code, but it works fine in IE. I can't seem to figure out what the problem is with it.
The error is: Error: theFrame has no properties
Line: 8
The line that the javascript console is showing an error for is in italics.
code from page:
<html>
<head>
<script type="text/javascript">
var defaultCols="100px,*";
var hiddenCols="0px,*";
function ShowHideMenu(){
theFrame = document.getElementById("framed");
if(theFrame.cols == defaultCols) theFrame.cols=hiddenCols;
else theFrame.cols=defaultCols;
}
</script>
<frameset cols="100px,*" name="framed">
<frame src="lframe.htm" name="frameMenu">
<frame src="mframe.htm" name="content">
</frameset>
</head>
<body>
</body></html>
Come someone let me know what I'm doing wrong here?
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Mar 30, 2006
I'm already past the basics of Javascript, and i need something that takes me to the other level and teaches me the new technologies and cool stuff (drag&drop, AJAX, OOP in javascript, maybe XUL...etc). So far i found these two books:
1. Sitepoint's "The JavaScript Anthology: 101 Essential Tips, Tricks & Hacks".
2. Worx's "Professional JavaScript for Web Developers (Wrox Professional Guides)"
Both seems to cover very insteresting topics, but i can only buy one of them. So which one do you suggest?
and by the way, i've read the sample chapter 5 of Sitepoint's book, and it seems like the author(s) just put the solutions/codes there and let you figure them out on your own. Is this how the rest of the chapters are?
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Jul 23, 2005
This is a question about defensive web browsing. Ocassionally I run into a page whose JavaScript does something that I find obnoxious. I would like to turn off JavaScript only for that page (instead of disabling it globally). It would be cool if there were some way to do this through a "bookmarkable" JavaScript snippet using the javascript: pseudoprotocol. Does anyone know any trick to do any of this?
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