I am trying to throw together a website using Ajax for the first time, to finally get with the times and figure it out. So far it is nothing but HTML pages and a bit of JS. Using some basic AJAX script I found online, I have the main index.htm which has a title, navigation, and content divs. The Ajax calls grab other content includes (which are just files with text content for the most part) to throw into the content div. For the most part it works, except for when I am trying to add the Google Directions gadget. When I add the script code it gives me to a file and call that file, there is no noticeable output.
Any suggestions on what I am doing wrong or what I'm missing?
If I am understanding you correctly this is an unnecessary use of AJAX. From what it seems like you want to do is load JavaScript via a JavaScript call. This can be accomplished using either method described here. Example:
<script type="text/javascript">
function dhtmlLoadScript(url)
{
var e = document.createElement("script");
e.src = url;
e.type="text/javascript";
document.getElementsByTagName("head")[0].appendChild(e);
}
onload = function()
{
dhtmlLoadScript("dhtml_way.js");
}
</script>
If the above link does not help or I am misunderstanding your question please provide further clarification or some sort of code example.
Following up on your comment
Here is a work around for your gadget, the below code would be on your main page (the one that is initially loaded). Here is my test HTML page:
<html>
<head>
<script type="text/javascript">
var gadget;
function getGadgetAndMove(node)
{
gadget = document.getElementsByTagName("table")[0];
node.appendChild(gadget);
gadget.style.visibility = "visible";
gadget.style.display = "inline-block";
}
</script>
<style>
.ig_reset, .ig_tbl_line { visibility:hidden;}
</style>
</head>
<body>
<div onclick="getGadgetAndMove(this);">Test</div>
</body>
<script src="http://www.gmodules.com/ig/ifr?url=http://hosting.gmodules.com/ig/gadgets/file/114281111391296844949/driving-directions.xml&up_fromLocation=&up_myLocations=1600%20Amphitheatre%20Pkway%2C%20Mountain%20View%2C%20CA&synd=open&w=320&h=55&title=Directions+by+Google+Maps&brand=light&lang=en&country=US&border=%23ffffff%7C3px%2C1px+solid+%23999999&output=js"></script>
</html>
If you need further explanation please let me know.
I believe I know what you want to accomplish, because I ran into the same problem. And I found a solution. So I would say that no it is not an improper use of ajax, because you could run into this in some circumstances.
Put the directions gadget not directly in the page content that is being loaded via ajax, but in a separate file such as "directionsgadget.html" (insert the script tag for the gadget in this file).
Then use an iframe with src="/path/to/directionsgadget.html" in your ajax loaded content.
The gadget should get loaded this way.
If you want the gadget centered within the iframe, you can wrap the script tag in directionsgadget.html in a div with a set width and style="margin:0px auto". That will center the gadget.
Here is an example:
Your main page is "index.html", and contains a div that will contain ajax loaded content:
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
$(document).ready(function(){
$.ajax({
url: 'ajaxcontent.html',
success: function(returndata){ $('#ajaxcontent').html(returndata); }
});
});
</script>
</head>
<body>
<div id="ajaxcontent"></div>
</body>
</html>
Then you have a file with the content that is to be loaded via ajax, and this has among other things a google gadget. Were not going to put the gadget directly here, but were going to put it in a separate file and point to it with an iframe. Let's call this first file ajaxcontent.html, as indicated in the ajax call in the head section of the first file:
<span>Here is some content that will be loaded onto the main page via ajax.</span><br />
<span>Among other things, there is a google directions gadget that will be loaded.</span>
<div id="getdirections" style="margin:0px auto;">
<iframe style="width:365px;height:216px;" src="directions.html"></iframe>
</div>
Now we will put the script for the google gadget itself in a separate file "directions.html" (as indicated in the src of the iframe above), and in order for the rendered gadget to be centered we are going to wrap the script tag within a div just so:
<div style="width:336px;height:116px;margin:0px auto;">
<script type="text/javascript" src="http://www.gmodules.com/ig/ifr?url=http://hosting.gmodules.com/ig/gadgets/file/114281111391296844949/driving-directions.xml&up_fromLocation=&up_myLocations=_a_bunch_of_information_with_personal_list_of_locations_&synd=open&w=320&h=55&title=Street+directions+by+Google+Maps&brand=light&lang=it&country=ALL&border=http%3A%2F%2Fwww.gmodules.com%2Fig%2Fimages%2F&output=js"></script>
</div>
I hope this example was clear enough!
Related
I can't figure out why for example I try to reproduce something basic like this example https://google-developers.appspot.com/earth/documentation/samples/fetchkml_example on my own, I can't get it to work. I'm using my key that I have been using for my Google Maps API, so I think that part should be fine, but when it comes to KML I can't seem to get it to work regardless of whether it is fetched or parsed. I have put my KML file here https://sites.google.com/site/shahinkmlexamples/experiment/kml_example.kml , and my code is below with my own key number not shown
<html>
<head>
<title>fetchkml_dom_example.html</title>
<script src="//www.google.com/jsapi?key=MYKEY#"></script>
<script type="text/javascript">
var ge;
google.load("earth", "1");
function init() {
google.earth.createInstance('map3d', initCB, failureCB);
}
function initCB(instance) {
ge = instance;
ge.getWindow().setVisibility(true);
var href = 'https://sites.google.com/' + 'site/shahinkmlexamples/experiment/kml_example.kml';
google.earth.fetchKml(ge, href, function(kmlObject) {
if (kmlObject)
ge.getFeatures().appendChild(kmlObject);
if (kmlObject.getAbstractView() !== null)
ge.getView().setAbstractView(kmlObject.getAbstractView());
});
}
function failureCB(errorCode) {
}
google.setOnLoadCallback(init);
</script>
</head>
<body>
<div id="map3d" style="border: 1px solid silver; height: 400px; width: 600px;"></div>
</body>
</html>
so I know the solution has got to be simple, but I just can't figure it out.
Thanks
When you're loading it from a local file (such as using notepad++ and loading that file in Chrome) you need to add a protocol to the script tag:
<script src="//www.google.com/jsapi?key=MYKEY#"></script>
Becomes:
<script src="https://www.google.com/jsapi?key=MYKEY#"></script>
Without that change, your page is looking for the file in your local filesystem.
It's left out in the samples so that your browser will load the HTTPS version if your page is HTTPS, and the HTTP version if your page is HTTP. This prevents security warnings in the browser.
I'm not sure what your problem is. I put your code into an online editor - http://www.onlinehtmleditor.net/
a simple copy and paste and it worked fine.
Also, regarding the API key. For Google Earth you no longer need one. Simply use the generic javascript call below
There is much info about opposite situation, when people try to have stuff in HTML, that is visible to Google bots, but not visible to users, in my case, I need opposite thing - to hide some of the html from google bot. The question would be how?
Flash is not an answer,
Would prefer not to use fancy ajax things also (mainly because I need it right away, not on document ready),
Also robots.txt is not an answer, because it works on urls, not parts of the page.
Would any special css/simple javascript work, is any special html tag for this?
Maybe a base64 encoding server side and then decoding on the client side could work?
Code:
<!-- visible to Google -->
<p> Hi, Google Bot! </p>
<!-- not visible from here on -->
<script type="text/javascript">
document.write ("<?php echo base64_encode('<b>hey there, user</b>'); ?>");
</script>
How it looks to the bot:
<!-- visible to Google -->
<p> Hi, Google Bot! </p>
<!-- not visible from here on -->
<script type="text/javascript">
document.write (base64_decode("B9A985350099BC8913=="));
</script>
Create a Div,
Load the content of the Div (ajax) from an html file which resides in a directory protected by robots.
Example.
/index.html
Somewhere on the header. (check http://api.jquery.com/jQuery.ajax/ )
$.ajax({
url: '/hiddendirfrombots/test.html',
success: function(data) {
$('#hiddenfrombots').html(data);
}
});
...
somewhere in the body
<div id="hiddenfrombots"></div>
create a directory "hiddenfrombots" and put the followin in the roots .htaccess
User-agent: *
Disallow: /hiddenfrombots/
This should do the Trick:
<!--googleoff: index-->
<p>hide me!</p>
<!--googleon: index-->
For more information check out the link to Googles page that describes it in more depth.
Excluding Unwanted Text from the Index
If you can use PHP, just output your content if not Googlebot:
// if not google
if(!strstr(strtolower($_SERVER['HTTP_USER_AGENT']), "googlebot")) {
echo $div;
}
That's how I could solve this issue.
Load your content via an Ajax call
But create a JS file (e.g.: noGoogleBot.js) that contains the function that implements the ajax call:
$.ajax({
url: 'anything.html',
success: function(data) {
$('#anywhere').html(data);
}
});
Then in your robots.txt
User-agent: *
Disallow: /noGoogleBot.js
So all the divs that are loaded using the function in noGoogleBot will be blocked.
Googlebot (or any other crawler) will ignore the content of noGoogleBot.js.
Per Google docs
<p>This text can be shown in a snippet
<span data-nosnippet>and this part would not be shown</span>.</p>
Adding data-nosnippet to div, span, or section prevents the content from being shown in the search result.
simple, create an image with the text you don't want Google to see
Is there any way to write script in css and call or execute it whenever required ?
I need a <script> tag to be executed .
i need something like this..
css code
#execute{
<script> ..some script.. </script>
}
so whenever i use
<html>
.
.
.
.<div id="execute" />
.
.
.
.
</html>
so if i change the script changes will be reflected everywhere.
Is it possible?
EDIT:
Is it possible to keep my <script></script> tags inside some js file and i will host it. and then i will call some function() from my HTML so that the script will be executed everywhere i need it.
Can someone show me any example, tutorial how i can do it.
I don't have much information about the Js file and how the function should be called.
Thank you all
Does it have to be in CSS? jQuery is a great, simple way to do what you're asking. You put all your style information in the CSS (what it's intended for) and keep your javascript in the html or a .js file. Take a look at http://jquery.com. The code would look something like this
$(function() {
$('#execute')
.someCoolFunction()
.anotherCoolFunction();
});
You use $(function() { /* code */ }); to run the code when your document is ready, and you use $('#execute') to grab the element with the execute tag. You can then do a lot of cool javascript really easily with that jQuery element.
No, you cannot mix CSS and Javascript this way. Why would you want to?
If you simply want a common JavaScript include, do it like this:
<script type="text/javascript" src="yourscript.js"></script>
You can't do this in standard CSS.
There is a way in which you can run code from within the CSS context, using a technology called 'Behaviours', referencing an HTC file (which is basically Javascript) in the stylesheet.
However, this technology is non-standard, and only exists in IE. It is therefore only really used to write hacks to make IE support features that it doesn't have which are in other browsers. An example of this in use is CSS3Pie.
If you're working on a site which will never be used in any browser other than IE, and you're happy to use a non-standard technology, then you may consider this to be the exact answer to your question. However I would strongly recommend you don't do this.
More realistically, you should be using a Javascript library such as JQuery, as the functionality you describe is pretty much standard fare for JQuery.
With JQuery, you would write code like this (in a normal script block, not in the CSS!):
$('.execute').each(function() {
/* your code here; it would be run for each element on the page with the class of 'execute' */
}
As you can see, it uses a CSS-style selector syntax to select the elements to work with.
(also NB: I've used execute as a classname here, not as an ID, because you imply that you want more than one of them -- note that you should never use the same ID more than once in any HTML page; it is invalid. If you need the same thing several times, use a class.
JQuery has functionality to watch for changes to elements, respond to events such as clicks or mouse over, and much more. Other similar libraries such as Prototype, MooTools and Dojo would also be able to do a similar job.
Hope that helps.
[EDIT]
Given the edit to your question, can you not just place the advertisment <script> tag inside the <div> on the page where you want it?
So with JQuery, you could write something like this to run your ad in each place you want it:
HTML:
....
<div class='execute'></div>
....
<div class='execute'></div>
....
Javascript code (remember to also include the JQuery library, or this won't work):
$(document).ready(function () {
$('.execute').each(function() {
advertisement(this); //change to whatever the advertisement script function is called.
});
});
Hopefully that will get you started. I can't really help you much more without knowing more about the advertisement script, though.
Also, the people who supplied the advert script should be able to tell you how to use it.
I believe a Javascript library like JQuery or Dojo is what you are looking for. It will allow you to add event handlers on tags with certain CSS attributes, which will behave exactly like what you are trying to do right now.
EDIT
Here is an example with Dojo pulled from the Google CDN that will popup an alert window when you click on any <div class="execute"></div> block:
<html>
<head>
<style>
<!--
.execute { background-color: red; height: 25px; }
-->
</style>
<script src="http://ajax.googleapis.com/ajax/libs/dojo/1.6.0/dojo/dojo.xd.js" ></script> <!-- load Dojo from Google CDN
<!-- Let's register a onClick handle for any .execute div. -->
<script>
dojo.ready(function() // Dojo will run this after being initialized
{
// Get A list of all tags with id execute and add a event onClick
dojo.query(".execute").connect("onclick", function(evt)
{
alert("Event triggered!");
// ...
});
});
</script>
</head>
<body>
<div class="execute">Click me 1</div>
<br /><br />
<div class="execute">Click me 2</div>
</body>
</html>
Edit 2
This example uses an onClick event but Dojo (JQuery) allows you to do much more things. For instance if you wanted to dynamically add an image or something onLoad inside .execute divs, you could do it with Dojo (JQuery) in a similar way to this.
Doing it with a library saves you a lot of effort, but if you still want to write and call your own functions from javascript files, this is a rough idea of how you would do it:
// myScript.js
function foo()
{
// ...
}
// page.htm
<html>
<head>
<script src="path/to/myScript.js"></script>
</head>
<!-- ... -->
<div class="execute">
<script>
<!--
// Call foo()
foo();
-->
</script>
</div>
<!-- ... -->
It doesn't really make sense to abstract a script into CSS like that, and even if it was a good idea, it can't be done.
Why do you need to run the same script over and over in different places? Consider whether or not there might be a better or simpler way to do whatever it is you're doing.
Plus, when you include a script with the src attribute in the script tag, if you modify the script's source file, the changes persist everywhere.
No, but you can use script to alter the CSS properties of any element in the DOM.
I'm exploring HTML5 and Processing.js.
When the user clicks on an image on my webpage, I'd like to call a function in the Processing.js code. Just calling the function in onclick, as illustrated in this simple example, isn't working:
<html>
<head>
<script language="javascript" src="processing.init.js"></script>
<script language="javascript" src="processing.js"></script>
</head>
<body>
<script type="application/processing">
void restart()
{ /* does something */ }
</script><canvas>
You'll need a browser that supports HTML5 to see this content.
</canvas><br/><br/>
<img src="restart-image.png" onclick="restart()">
</body>
</html>
Any thoughts on how I can call a method in the Processing.js script when an image is clicked? (Maybe I'm making a basic HTML mistake by using img onclick?)
This should work, enclose you image inside the anchor tag <a> image </a>
Use href tag to call the function.
image source
I would start by pulling the javascript for the onclick out of the img tag.
In a separate javascript file you can have:
document.getElementById('restartimage').onclick = function() { Processing.setup(); }
Obviously I put an id attribute on your img tag.
The setup function I noticed on this page:
http://processingjs.org/
The basic idea is that by pulling the onclick into a javascript file it will be easier to code what it should do.
you need to change the script-type to text/javascript or application/javascript first.
then place 'function' before 'restart()' function reducing 'void'.
i have used firefox 3.0.14 on ubuntu 9.04.
You can call processing functions using the Processing js object's getInstanceById function.
For example here is a function:
$(window).resize(function(){
var p=Processing.getInstanceById('processing_canvas_id');
p.resize($("#main").width(),$("#main").height());
});
Where resize is my processing function inside the processing file associated with processing_canvas_id.
I am creating new Page with two divs.This Page Loading within Iframe.
First Div get contents from Database then load.Second Div contains Save and Cancel Button Only.
At the Time of loading Save and Cancel Button (Second Div) comes first.How to avoid this??
Hide the second div via CSS.
Then add some javascript which unhiddes the div when the loading from the DB is finished
Have the first document load the second document when it's ready. With a onload handler on the first document that sets the location of the second iframe.
Let's say your iframes have 2 ids: "iframe1" and "iframe2". You load the database content in iframe1, and an empty page in iframe2.
Here is a sample code for the document loaded in iframe1 :
<html>
<head>
<script>
function init () {
frameElement.ownerDocument.getElementById("iframe2").contentWindow.location = "/someurl/document2.html";
}
</script>
</head>
<body onload="init()">
<!-- iframe1 content -->
</body>
</html>
Dynamically load the content using something like JQuery or Prototype to control when and how divs load.