JQuery :: Extracting Data Being Returned From PHP Script?
Jul 5, 2009
Here is what I'm trying to do. I will pass a directory to a PHP script, that script will then return an array of filenames back to the javascript that called it. In the javascript I want to take the filenames returned and create links to them in an unordered list.
The PHP code to get the filenames is done and when I run the script I get an array that I have formatted into json... an example of the encoded array is as follows...
So here is the jquery I'm trying to use to get the filenames and create my links... But I must be missing something because my variable... data ... is empty... but status is Success.
I am doing a few tests with javascript and oop. but one failed so i falled back to the way i usually do this but it still isnt working properly. i am using $.post() but instead of returning whatever is echoed in the php file like it does with all my other scripts it returns the content of the file:
Isnt returned in var data but the whole file is returned as a string.
I'm slowly discovering the world of JavaScript, so I'm not sure I'm attacking this problem in the right manner, thus if I'm in the wrong newsgroup, my apologies.
What I'm trying to do is extract some news items from a web site. To do this, I'm using Microsoft Word VBA and using the following bit of script:
What will be the best way to extract dynamically changing information from a web page that holds XML?I have to extract some data from multiple web pages.These sites contain XML code that dynamically reloads (and changes) parts of the page.Since only small parts get a refresh (perhaps 200 bytes every 5 seconds) it wouldn't be efficient (and also might lead to negative reactions from the server) to reload the whole page (about 40k) every time.How could I best determine these updated contents and send them to the program that further processes them?I am familiar with several programming languages but unfortunately have very little knowledge of internet programming.
I'm trying to get some average rgb values from an image in one canvas object and apply them via fillstyle to a rectangle in another canvas object.I have a dropdown that loads an image onChange()="ChangeBaseWood()" into a canvas object. The second canvas object is to be filled with an average color based on the content of the first canvas onClick="GetBaseColor()". For simplicity I've replaced the for loop with just the values of pixel 0,0. Where I think I am assigning the rgb values, the error console keeps reporting that var sample is undefined at the line "var redpart = sample[0].
function ChangeBaseWood(){ var dropdown = document.getElementById('woodvalue'); var woodcanvas = document.getElementById('basewood');[code]....
I've tried various things to assign the redpart,grnpart and blupart but I'm missing something basic.
I'm trying to write code that will extract from an XML file and then display the results. Keep getting a syntax error.
HTML: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html>[code]....
My intention was to access all of the tags (name, genre, and hitsong) in the XML file. Thought that var musicianInfo = xmlDoc.getElementsByTagName("*"); would do that. Then, loop through each tag and display the result.
The url is a very straightforward servlet that queries a database and returns either Y or N. That part is working fine. The first alert shows Y or N just as it is supposed to.
However, the second alert is always showing Turbo, as though the if statement is not able to compare properly. This is probably javascript rather than specific to jQuery, but can anyone see where I'm going wrong?
I want to parse data from tables in webpages , there are no problems when I parse regular HTML tables, but it seems to be impossible to get any data from dynamic pages that update themself automatically.how to extract data from dynamic web pages? My goal is to read webpages with an application written in java, parse the page and clean the data and store it in a database.
I'm using DOM in javascript to extract data from a dynamically generated html table( table id ="tableId"). Each cell of the table includes an input field to get user input. The problem is below javascript returns "null" always when retrieving the input field value? What I'm doing wrong here?
var mytable = document.getElementById('tableId'); var mytablebody = mytable.getElementsByTagName("tbody")[0]; var myrow = mytablebody.getElementsByTagName("tr")[0];[code]....
So I'm loading the div#my_events by prepend(data) where "data" is another well styled div. Is there anyway to animate this returned data. Unfortunately I can't just specify a unique ID on the incoming data. So I was wondering how else I might be able to address this data I'm returning.
It is basically a topic list, with a modal that sends jquery to add a topic to the database, and returns the topic from the database, hides the modal, and displays the last added topic at the top of the topic list. Now I'd like it to do something slightly fancy like animate the color of the background to bring the user's attention to it.
In this dumb example, I'm unable to match the 'data' returned variable with the value I assigned to it in php (I can't manage to enter my 'do stuff'), yet its value is 'ok' if I display it. I have no problem to retrieve html code from php and inject it in my pages, but I can't test it as a regular javascript string.
What's wrong in this ? What have I missed about the 'data' format ? Do I have to 'cast' data to a javascript string (and if so, how ?)
I am currently using $.ajax to post to a Perl file that queries a webservice and returns XML. Running the Perl via command line confirms that XML is being returned with Content-Type: application/xml. However, regardless if I set the dataType parameter to "xml", "XML" or just use jQuery's intelligent guess, it appears that I am not getting any data returned to my function at all.
I've tried using the full $.ajax notation and the simplified $.get notation as follows:
and:
I have also tried using JQuery to perform a "GET" directly to the webservice which returns XML by default and still I get no data returned to my function.
Although I doubt it's browser-related, I have confirmed this in both Chrome (5.0.375) and Firefox (3.6.3).
When I use the ajax function to grab the remote content of some page, I would like to then apply jQuery selectors to that data. Does anyone know how this can be done? Let's say that I just grabbed the content from an html page. I would then like to be able to use a standard: $("#someID").val() to get the content of that page element.
The autocomplete (I'm using this one) and the getJSON work perfectly. The problem comes when I try to do something with the returned json data. Line 14 won't work for me. Any selectors I try on the returned json data won't work. The selectors still work on items that were there before the json data was returned.
I have a problem I have in my controller a function which poperly returns the value (i've checked by var_dump). When I try to access this data from $.ajax it returns nothing...
I'm currently working on a form where an entire HTML page is returned via the .ajax method. I would like to display only the content of the div with the id "content" (of the page returned) in the div with the id "result" (in the calling page). Here is my current script :
I am trying to build a table from backend data and then perform a filter on it using the picnet table filter. After much messing about I have discovered that the problem lies with the table data returned from the server. As a test, all I want to do is get jQuery to make an alert when a table cell is clicked. I added a hard coded table cell at the beginning of the table and when I clicked on it, the alert appeared. However, clicking on any other cell had no effect.
I'm having a little problem with a jQuery/JS script I just wrote in IE7/8. The problem is the first 2 lines of the returned data are not being displayed (w or wo styling) but only in IE. The strange thing is though if I alert the returned data it's there.
I am developing a web application in java (jsp's and servlets). For the project I am working on I will need to develop an html data entry screen and the code to load data into the screen, and then save the data back to the back-end database.
How to do the following: Read the data out of the database (JDBC, no problem) in a servlet. Put the data into the appropriate form for returning to the data entry screen, which will be a jsp. (Is JSON the right choice for passing the data from the servlet to the jsp?)
In the jsp, parse the returned data and populate the HTML form elements (text fields and combo boxes). When a button is clicked, pull the data out of the form elements and return to a servlet for saving back in the database.
I have a html form which produces 3 post varaibles.
I'd link to be able to call a php file when sumbitted that sends the data from my form and returns the results from my php file to a div on the oringal page.
I know that you can use .load to call a page to be diaplayed within a div $('#container').load('url #div_on_page') but dont know how to send the from data.
I'm pretty new to jQuery and I'm using $.getJSON to submit some data to a PHP script which either returns 5 sets of json-formatted data or data to indicate an error condition (i.e., no data available) from the PHP database query. The callback routine handles the 5 sets of json-formatted data just fine (using $.each...) but I'm having trouble testing for either just a string with 'null' in it or a json-formatted data return of [{"error":"null"}].
My callback code for the second approach looks like this: function handle_stores(data) { if (data.error == "null") ..... But this test does not execute the following code for the 'true' condition, i.e., data.error == "null" never evaluates to 'true'.
