Fetching Data From Other Web Pages
May 14, 2005
Is there any way I could fetch data from another web page?
Things like current weather, and rate of exchange?
I would search the data for example by
-loading a web page somehow (IFRAME?)
-going through all <td> tags in it and
-if the <td> had a spesific text, like "weather in Fooland" then
-I'd jump to the next <td> tag and take the text inside it, that hopefully had the data I was looking for.
I used an IFRAME to load a web page. It's id is called "myiframe"
var myIframe = document.getElementById("myiframe")
var iframeBody = myIframe.body;
var paragraphs = iframeBody.getElementsByTagName("p");
document.write(paragraphs.length); //this writes 0!
the page I loaded on the IFRAME has paragraph elements right on body. Why can't I find them?
I tried using node iterator (document.createNodeIterator() ? ) too, but that didn't work at all! I tried it without the IFRAME too. If you have any guesses what it might be, please tell me. Should it work in Mozilla? Should I create the node Iterator only after the page has finished loading?
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Apr 18, 2011
I am having trouble sending JSON data to a server. Its definitely reaching the parser.php, but I am not what to create in PHP to fetch this data. Also I am not sure my Javascript is correct.
<SCRIPT>
var JSONObject = new Object;
JSONObject.description = "hello";
JSONstring = JSON.stringify(JSONObject);
runAjax(JSONstring);
[Code]...
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Mar 24, 2010
I want that data against each option should be loaded as the option is selected in the combo box. As, while registering on yahoo, when we select a country all provinces of that country are loaded. (No need to click a submit button.)
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Jul 25, 2009
<span style="font-family: courier new,monospace;">Hello all,</span><br style="font-family: courier new,monospace;"><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">I've recently started with jQuery because I wanted to use it for posting details from an login form to a PHP script which should return whether the user is authenticated ox not.</span><br style="font-family: courier new,monospace;"> <br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">For this I use $.ajax, because of it's flexibility and I prefer to use it in this implementation. Reading (jQuery docs and examples) and searching a lot did not solve me on one issue: fetching the data in the callback to the global scope.
</span><br style="font-family: courier new,monospace;">
<br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">Here is the code:</span><br style="font-family: courier new,monospace;"><font style="font-family: courier new,monospace;" size="2"><script type="text/javascript">
[Code].....
how can I let the function that should check the message of the response know that 'msg' has been set?
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Aug 11, 2010
Apologies if this is a fairly simple question! I'm fetching data (from a MySQL database), and would like to show an animated loading image while the data is being downloaded, and obviously then hide it when the data is fully downloaded. I've found plenty of tutorials describing how to achieve this is the other direction (i.e. when submitting a form) but I'm not sure how to adapt these to what I want.
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Mar 24, 2010
I want that data against each option should be loaded as the option is selected in the combo box. As, while registering on yahoo, when we select a country all provinces of that country are loaded. (No need to click a submit button.)
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Aug 3, 2011
I have my doubts if this question belongs to the javascript side since it's all good until the data from MySQL comes in, but since the javascript is the one breaking I'll take my chances.
The external js (portada.js)
Code:
$(document).ready(function(){
var currentPosition = 0;
var currentPosition2 = 0;
var currentPosition3 = 0;
[Code]....
As you can see I have three divs with different slideshows (slideshow, slideshow2 and slideshow3), they have products that slide to the left. When I was testing to make sure it all looks good the sliding feature was working fine, but I lost this feature when the data was being retrieved from MySQL (at the moment on <div class="slide">).
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Nov 10, 2011
I already know that i can change the src of an image-tag with jquery / javascript.BUT my problem is, that I try to load the new src-information from a dynamic html-sheet.So every 1 second the image src should be refreshed.
Some of my code:
<script src="jquery.js"></script>
<script>
var auto_refresh = setInterval(
[code]....
You can see in line 17 that it is no problem to show the fetched data from the other html-file in a div every 1 second.But I would like to change a picture dynamically.That means in detail:in the other html file stands either the value "0" or the value "1".This value should be fetched every 1 second (like the div-refresh) from the file.Then the value should be used as new src-name for the refreshing image, e.g.:fetched value = "1" => img src = "1.jpg" => [user can see a green light]fetched value = "0" => img src = "0.jpg" => [user can see a red light]How can I achieve this?
- How can I change the src name
- How can I refresh the image every 1 second with the new src name?
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Jun 7, 2011
My friends and I have developed a chat service that uses Live Profiles to login to chat. The issue I am having is I need to autofill the login page with my email/password to speed up login and I was told JS would be the best way to do it, however, I can't seem to figure out how, lol. I tried sending the login info in a url and bookmarking the url to no avail. The link to the page is below.
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Jun 20, 2010
I have a database site I am currently designing, and would like to use a single page with forms in external html documents to undertake admin tasks (eg. add/remove records etc.)
I have managed to successfully load the form html into the necessary div using the $.load function, however, when I try to process the form, with this code:
$("#add_form").validate({
debug: false,
rules: {
maker: "required",
[Code]....
which asks 'process_form.php' to process the data, it doesn't seem to send the data in the form to the page. to confirm this, and whilst trying to get the system to work, the 'process_form.php' consists of 2 lines,:
echo $_GET['maker'];
echo '123456';
(ie. one line to return a string literal, and one line to return one of the variables which SHOULD be passed by the form)
This results in just the 123456 string being returned.
I have tried several things: loading the script above in the head of the 'parent' html page (ie. which the form is loaded into); - does not properly fire at all;
loading the script 'in-line' in the imported html - this leads to the result given above; running the script in an external script.js file through an onsubmit directive on the form...does not appear to properly fire the script.
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Feb 8, 2005
in PHP you can make a statement to the likes of
if (issett($_GET)) {
do stuff
}
else {
do other stuff
}
I was wondering what the equivalent is to call a GET with javascript EXAMPLE
<a href="page=yourpage&action=edit">edit</a>
<a href="page=yourpage&action=add">Add</a>
consider those 2 URL's
the JS:
if (action=edit) {
do this;
}
else if (action = add){
do something else;
}
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Feb 7, 2006
I'm sure there's some fancy Ajax way to do this, but I'm looking for
something simple. Is it possible to fetch a page from within a javascript
function? Basically what I want to do is allow the user to click a button to
add an item to a shopping cart *without* leaving the current page. Something
like this:
<a href="javascript:addToCart()">Click to add this thing to the cart</a>
<script>
function addToCart() {
String results =
fetchPage("http://mysite.com/addToCartPage.jsp?item-number=123");
alert(results); // shows a success or failure message
}
</script>
Unfortunately, I can't find any such fetchPage() function. Is there a
simple, cross-browser way to do the same thing?
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Jul 26, 2010
I am usign $.post() method to post selected value in a drop down to server. On server-side I fetch resultset based on the selected value, and serialize the result set via the Response object which is fetched by the on Success function within $.post. How can set the textbox values conatined within that result set to those textboxes? Rather how can I fetch each of the values out from that response object in JQuery?
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Aug 1, 2011
I'm looking for a way to have a single, random line fetched from multiple text files, and then have that combination output somewhere, whether just to some field or another text file.
For example:
Text file A -
Text file B -
Text file C -
So it would go in, get a line from each, and display something like:
I know it's a weird-sounding example, but you get the point. The line choices don't have to be separated by hyphens, but they preferably would be separated by something, like a comma, semi-colon, slash, whatever.
I know this is pretty much a web coding forum, so that would be fine if I had to host it on my server or open it with a browser. But it would be optimal if this could be made into a standalone executable.
I'm basically looking for something like Random Line Picker [url], just with the added functionality I mentioned.
I'd be willing to make a little donation to someone if coding this would be a little difficult.
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Oct 14, 2007
I have a style sheet with a certain element I'd like to obtain the background-color property because I've recently stopped using bgcolor="#xxxxxxx" and replaced it with class="alt1" or class="alt2" for my <tr>'s and <td's>.
The problem begins with the SWF flash object function I have (to prevent the double click for swf movies on the web page). One of the arguments allow me to set the background color but it only takes a hex color such as #333333 but since I've converted my bgcolor= to class= I can no longer access the required hex color to send to the flash object function.
I would like to now try to access the alt1 or alt2 property of my css sheet, which looks like this: Code:
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Mar 24, 2011
i have a website with content on specific pages i need some sort of JS soloution which will fetch an ID/Keyword out of the page content so when a button is clicked it finds the ID/keyword and directs the user to a specific form/page.
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Sep 27, 2009
I coded the following JavaScript:
var el = document.createElement("iframe");
el.setAttribute('id', 'ifrm');
document.body.appendChild(el);
el.setAttribute('height', 250);
[Code].....
And am putting it between <script type="text/javascript"> and </script> tags in the <body> section of my site. But, it only works in certain areas of the page.
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Jul 19, 2011
How to link two html pages? If we use <a> then what do wr give value to href?
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Jun 27, 2011
I am using .ajax() to access cross-domain data using JSONP. Because I need to be able to cache the data I want to use a static name for thejsonpCallback function, so I have set the jsonpCallback option in the .ajax() request. However that appears to requires a global function whereas the auto generated function didn't (well maybe it did but that was all hidden from me).
I definitely need to be able to cache the results. Ideally I wouldn't have a global function handling the data. Is there another way to do this? If not what is the best practice way to go about using a global function these days and how do I provide it with the context of the object/module it was called from - which is where the data is needed?
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Oct 5, 2011
Relatively new to jQuery but have a problem with getting data to display.Using a webform with 2 forms. User slects and inputs data into the first form, clicks a button then using jQuery .ajax submits the serialized data to a php script. The script processes the input into multiple paragraphs of text which is based on the input from the first form.The data is returned to the webpage and displayed in a text area (of the 2nd form) where the user can edit it to fine tune the wording. The 2 forms are displayed in different tabs so it is easy to move back and forward between the 2 forms.
The problem occurs when the user goes back to the first form and enters or selects different text and then click the submit button to generate a whole new text for insertion into the textarea on the second form. For certain fields the modified text is displayed.However if the whole of the text in the textarea is deleted, then the user clicks the submit button to re-generate the text content area then nothing at all is ever interted into the textarea. If have user alert to check that data is returned from the php handler and this text is correct. BUT when I click on the tab to see the textarea (id is "draftrec") there is no text inserted. The relevant function is below and the line that should insert the text into the textarea is:
$("textarea#draftrec").html(data).show();
//------------------------------------------------------
$("form#form1").submit(function(e){
[code]....
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Jan 3, 2011
I would like to use jQuery to prepopulate a form - ie make a call to a php program to get data from a database and pre-populatea form with appropriate data for the user. Can anyone point me in the right direction for some examples on the simplest way to do this?
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Aug 21, 2009
I wonder if i can make the variable data which is [data] in jQuery.post( url, [data], [callback], [type] ) dynamic. for instance, this is the form i want to send,
PHP Code:
<form action="send_xml.php" method="post" enctype="multipart/form-data" id="form_send"><input type="checkbox" id="var_1" class="checkbox"/><input type="checkbox" id="var_2" class="checkbox"/></form>
[Code]...
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Jul 22, 2011
I am writing a small data entry screen that will post the form data to a page and return a message. But i cannot get the Success or Error functions working properly.
Here's the code where strData is the posted querystring of:
I'm not sure whether it should be in a form and using the onsubmit or click of a button.
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Jul 13, 2009
I am still new to jQuery and I am trying to figure something out. I have this code:
[Code]...
This is working fine on itself. What is does is when I click a link it loads data into the following div. When done loading it slides out. But I want to change the appearance of the slide. I have tried to do that like this: $(this).show("slide", { direction: "down" }, 1000); But this doesn't work. When I check firebug it says the following: o.easing[this.options.easing || (o.easing.swing ? "swing" : "linear")] is not a function
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Mar 25, 2011
Im trying to convert the contents of a canvas into a data url and then post it along with other inputs to the controller in order to save an image.
The PHP:
<
formmethod
=
"post"accept
[code]...
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Oct 26, 2011
I have just started to learn about JQuery and wanted to learn how to retrieve data from an API.
I used the Flickr example provided here [url] and just changed the relevant code to point to the 500px api.
<body>
If I launch the following URL I do get the results properly [url]
Here's a sample of what the result looks like:-
I don't get any results when I run my code page. What am I doing wrong?
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