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Count number of times a string of text appears on a page with Javascript

I have a view in an MVC web application that produces and presents a list of countries and the name of their capital cities. Whenever the view loads, if the results presented to the user contain the words 'Australia' one or more times, then I want a message to appear at the bottom of the screen that says 'Australia is included in the results'. I have used the following script, but the message appears whether or not Australia is in the results. Does anyone have any suggestions?
<script type='text/javascript'>
if (
(
document.documentElement.textContent || document.documentElement.innerText
).indexOf('Australia') > -1
) {
alert("Australia is included in the results");
}
</script>
Thanks in advance

Your code looks sensible, so I suspect that the problem is that it is finding the string "Australia" in the code its self!
Try putting this script outside of the page contents (in a separate .js file) and see if the problem persists.
Maybe ;-)

I think only this condition might suffice:
if (document.documentElement.innerText.indexOf('Australia') > -1) {
alert("Australia is included in the results");
}
http://jsfiddle.net/3gkzC/2/

This is actually an answer for your follow up question about using HTML instead of an alert (I can't post comments, so had to do it this way, sorry.)
What you want is document.getElementById("element_ID").innerHTML = "whatever";
See here: http://jsfiddle.net/UVU8w/

Compare 2 elements in jQuery (by content)

So, I have a page with messages. I'm using jQuery.load (requesting the exact same page) to refresh the page smoothly once every X seconds.
The problem is that if there are images on the page, they get reloaded.
So basically what I want to do, is to still use the load method, but to only update the changed elements.
Is it possible to compare jQuery('.message-wrapper').first() with jQuery('.message-wrapper').last() and if they have the exact same structure / content, it should return true. Right now if you compare 2 HTML nodes (so JS, not jQuery), you get true only if they are one and the same element.
What I want to do is check the content to see if it's different.
Disclaimer: I've seen a few similar questions, but none have a working solution.

To compare the text content of your elements you can use text(), or to compare the markup, use html() :
$('.message-wrapper').first().text() == $('.message-wrapper').last().text()
To remove spaces before and after the string, which can be an issue sometimes, you can wrap it in jQuery's $.trim method :
$.( $('.message-wrapper').first().html() ) === $.( $('.message-wrapper').last().html() )

jQuery - Trouble adding a class to a hyperlink using 'each'

I have some Javascript that finds all of the hyperlinks in a page that contain 'google' for example and changes the beginning of the url to another url.
I am trying to add a class to this affected link, however I am getting a lot of 'undefined' errors in the JS console. I have tried alert($(this).innerHTML)) which showed the contents of the hyperlink - clases and whatnot. But for some reason I cannot append a class. I have also tried using this.className += " socks". That also causes an undefined error. I think I am missing something simple!
Also is there a way of using a regex in the search, I am newish to Javascript.
Here is my code:
$("a[href*='google']").each(function(){
this.href = this.href.replace('http://www.google.co.uk','http://www.ask.com');
this.href = this.href.replace('http://www.google.com','http://www.ask.com');
$(this).addClass("socks");
});
Thanks very much for any help!

There is no error with this code that i can see:
http://jsfiddle.net/p7Sgj/
See this.

try
$("a[href*='google']").each(function(){
var href = $(this).attr('href');
href.replace('http://www.google.co.uk','http://www.ask.com');
href.replace('http://www.google.com','http://www.ask.com');
$(this).attr('href', href);
$(this).addClass("socks");
});
instead of using this.href. I guess your code doesn't reach the addClass part...
Also, use firebug (in case of firefox) or chrome developer tools (in case of chrome) for debugging. You can simply set a breakpoint, add watches, etc...
(In that case, make sure you use a so-called non-minified version of jQuery for easier debugging)

If your HTML code is
Hello
World
And your CSS is
.socks {
color:#f00;
}
Then your code should be working fine.
http://jsfiddle.net/k93TZ/2/
Working here.
It might be your html or css code.

jCarouselLite not working with <3 list items

EDIT: This is not a problem with the jQuery creating the appropriate markup from SharePoint Announcement List to use jCarouselLite. It seems to be a problem within jCarouselLite. I have done another jsfiddle with just the appropriate markup, not the jQuery/javascript conversion code, and the problem still occurs.
You can see the problem at http://jsfiddle.net/ayatollah/6RKNx/
Again it is only a problem with 1 or 2 list items. 3+ works fine. Should I be changing the markup, our jCarouselLite calling code to fix this?
Bounty will be offered as soon as it's available!
ORIGINAL===============================================================================
I have an Announcement List in a Sharepoint site that I want to convert to a jCarousel. The Announcement List is rendered as a table so I have put together some jQuery code to convert it to the required ul structure.
The jQuery seems to be doing its job but the jCarousel gives some weird behaviour. The first announcement displays as it should, then the second announcement scrolls in as it should. However, for each scroll after this it flashes up the first announcement, then scrolls in the second. When it should just scroll in the first again.
I had it working correctly but it was displaying blank announcements, so I introduced some code to filter out the blank announcements. Here is a jsfiddle to show you the problem.
http://jsfiddle.net/RzeEX/2/
The only change I made from the previous code was to add the extra boolean value:
&& $(listitem).text() != "\xa0"
Seen at: http://jsfiddle.net/RzeEX/3/
However, in the above fiddle the code works exactly as the previous one, but on my server it displays an extra blank announcement. Don't know why I can't replicate it here.
Anyway, anyone have any ideas?
EDIT: Actually just testing it with more than 2 announcements and it seems to work. See http://jsfiddle.net/RzeEX/4/
It is now working as expected, but have 2 announcements and it is still broke, have 1 announcement and nothing shows! It must be something to do with the jQuery as I would believe the jCarouselLite plugin to work.
See http://jsfiddle.net/RzeEX/5/ for the single announcement.

Since it is my understanding that you might have a dynamic list of elements, you can do something like this:
$('.viewport').jCarouselLite({
auto:1000,
speed:1000,
visible: $('#announcementList li').length
});
That way it won't matter if you have 1, 2 or 100 elements. It will always work as it should.
Here's the jsfiddle: http://jsfiddle.net/XS87c/

I think by setting visible:2 may give the desire result.
$('.viewport').jCarouselLite({
auto:5000,
speed:1000,
visible:2
});
let me know if it does not work.

how many do you want to be visible? what behaviour do you want if there is < # visible. I ran into this exact problem, and solved it by not applying the carosel if there was < # visible in the list.
something like this should do the trick:
if ((document.getElementById('viewport') != null) && $('#announcementList').find('li').length >= 3 ) {
$('.viewport').jCarouselLite({
auto: 5000,
speed: 1000
});
}

Complementing the solution of Irfan, you can do:
if(document.getElementById('viewport') != null) {
var options = {auto:5000,speed:1000};
//Here we count the number of items and set it for a better display for 2 and 1 item
if($('#viewport a').length <= 2) {
options.visible = $('#viewport a').length;
}
$('.viewport').jCarouselLite(options);
}
So if you have on or two elements you will see just one or two. But if you have more than two elements you will see just three elements.

Expansion of Struts 2 Tags Messes Up Rendering Of Page

Often times, when I use struts 2 tags, the loading of a page will be incomplete apparently because of single quote or double quote characters from the struts 2 tag interfering with such characters from javascript.
One example I am very eager to get working is as follows:
var me = '<s:a href=\'http://www.google.com\'>Google Link</s:a>';
$('#appnSelect').html(me);
So what I am concerned about is when single and double quotes are inside that me string on the right side of line 1. Ultimately, I need to get <s:select> to work, but this problem seems to creep in with a number of tags like the above example. Replace the <s:a> tag with an <a> tag, and voila, it works. However, when the <s:a> tag gets expanded, the page will incompletely load.
Is there an easy solution somewhere I am missing? One thing I did try was with the theme attribute setting theme="simple" because sometimes that helps me when the output gets rendered incorrectly. That did not work in this case.

Generating HTML from tags like that in the middle of a JavaScript string constant is always going to be an ugly business. In addition to quote characters, you're also likely to get newlines. Strictly speaking you don't know what you're going to get, and you can't control it.
One thing that comes to mind is that you could drop the tags into dummy <script> blocks marked as a non-JavaScript type:
<script id='anAnchor' type='text/html'>
<s:a href='http://www.google.com'>Google Link</s:a>
</script>
The browser won't try to execute that. You can then do this in your JavaScript code:
$('#appnSelect').html($('#anAnchor').html());

What should work with very little thinking:
<s:a id="google" style="display: none;" href="www.google.com">Google Link</s:a>
Now just grab the the element using the id in your script. Might be better if you set up a class. There are id, style and class attributes for all struts2 tags.

I believe the issue is with your escaping of the single quotes inside the <s:a> tag. In my experience with using <s:url>, I've done the following:
var url = "<s:url value='/someAction.action' />"
I believe the same syntax should hold true for <s:a>.
Additionally, look in your JSP container's error log, and see if you can find an error relating to that <s:a> tag. That may provide some additional insight to the problem.

This is my answer, which will not be the best answer because Pointy's response pointed me in the correct direction. However, up votes still appreciated :)
First, you need the script blocks which are not rendered. I have 2 because a checkbox will toggle between which one is displayed:
<script type="myType" id="abc">
<s:select name="selectName" list="#list1" listValue="%{prefix + '-' + name}" theme="simple"/>
</script>
<script type="myType" id="abc2">
<s:select name="selectName" list="#list2" listValue="%{prefix + '-' + name}" theme="simple"/>
</script>
Next, I create a region which is blank in the html code
<div id="innerRegion">
</div>
Then, I need to put something on the screen when the page first comes up, so go with this:
<script type="text/javascript">
$(document).ready(function(){
$('#innerRegion').html( $('#abc').html() )
});
I needed to put this at the end of my document because onLoad was already being used by a parent page. So I am saying abc is the correct default.
Then I need logic to handle what happens when the checkbox is pushed:
var buttonPressed = false;
$(window).load(
function()
{
LocalInit();
});
function LocalInit() {
$('#myForm input[name=buttonValue]').change(
function()
{
buttonPressed = !buttonPressed;
if (buttonPressed == true)
{
$('#innerRegion').html( $('#abc2').html() )
} else
{
$('#innerRegion').html( $('#abc').html() )
}
$('#dataId').href = document.location.href;
}
);
}
I think what was tripping me up ultimately was that I was trying to force the s:select tag through jQuery functions when as you see above it did not turn out to be necessary. I could just write the s:select as normal.