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  • scope of variables in JavaScript callback functions

    - by Ethan
    I expected the code below to alert "0" and "1", but it alert "2" twice. I don't the reason. Don't know if it is a problem of jQuery. Also, please help me to edit title and tags of this post if they are inaccurate. <html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript"> $(function() { for (var i=0; i<2; i++) { $.get('http://www.google.com/', function() { alert(i); }); } }); </script> </head> <body> </body> </html>

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  • PHP - Pass POST variables with header()?

    - by Dan
    Hi, I'm trying to use the header() function to create a redirect. I would like to display an error message. Currently I'm sending the message as a parameter through the URL, however this makes it look quite ugly. Is there a way to pass this value as a post variable instead? Any advice appreciated. Thanks.

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  • backslashes in url variables

    - by namtax
    Hi there I have set up my coldfusion application to have dynamic urls on the page, such as www.musicExplained/index.cfm/artist/:VariableName However my variable names will sometimes contain backslashes, such as www.musicExplained/index.cfm/artist/GZA/Genius This is causing a problem, because my application presumes that the slash in the variable name represents a different section of the website, the artists albums. So the URL will fail. I am wondering if there is anyway to prevent this from happening? Do I need to use a function that replaces slashes in the variable names with another character? Thanks

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  • AS3 Accessing Variables of Parent Class From Child

    - by TheDarkIn1978
    i'm trying to assign a parent's variable from the parent's child //Parent public class Main extends Sprite { public var selectedSquare:Sprite; public function Main() { //inits and adds new Square child class to display list } ... ------- //Child public function dragSquare(evt:MouseEvent):void { Sprite(parent).selectedSquare = this; //evil doesn't work! parent.addChild(this); this.startDrag(); } i'm receiving this error, but i'm casting parent from displayObjectContainer to a Sprite so i have no idea why it's not working. 1119: Access of possibly undefined property selectedSquare through a reference with static type flash.display:Sprite.

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  • Scope of variables inside of javascript

    - by wcpro
    I have the following code sample that im trying to wrap my head around $(document).ready(function () { test("load json", function () { length = 0; // length = 0 $.getJSON("plugins/form.json", function (data) { length = data.fields.length; // length = 4 }); ok(length == 4, "length = " + length.toString()); // length = 0? wtf? }); }); the 'length' variable does not persist when the $.getJSON runs. I cant figure out if its because its asynchronous or because the variable is out of scope.

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  • Sending Variables in Post without the input tag

    - by abhishekgupta92
    I want to send only one variable via the post method. I have queried the database and have to post $row[id] variable to the page along with the form. To send the user's input we simply write like <input type="text" name="xyz"></input> and then we access it as $_POST[xyz]. This way we can send a variable that a user write. But, I want to send something that user has not written but there in my sending file as $row['id']. So, I want to send this variable as well. How can I do that? And also how will I be able to access that?

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  • Looping through with double variables

    - by Luke
    I have two arrays with two sets of values in ($a[] and $b[]) I want to do something like the following: $a[0] - $b[0] $a[0] - $b[1] $a[1] - $b[0] $a[1] - $b[1] This will continue until the arrays reach the end. So i want a hyphen to seperate the two arrays, with the first array staying the same until the second array has looped through. I am trying to get this in a dropdown with option value. How could i achieve this? I never tried doing any loops with two varaibles like that before, I literally have no idea at all! Thankyou

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  • Artisan unable to access environment variables from $_ENV

    - by hansn
    Any artisan command I enter into the command line throws this error: $ php artisan <? return array( 'DB_HOSTNAME' => 'localhost', 'DB_USERNAME' => 'root', 'DB_NAME' => 'pc_booking', 'DB_PASSWORD' => 'secret', ); PHP Warning: Invalid argument supplied for foreach() in /home/martin/code/www/pc_backend/vendor/laravel/framework/src/Illuminate/Config/EnvironmentVariables.php on line 35 {"error":{"type":"ErrorException","message":"Undefined index: DB_HOSTNAME","file":"\/home\/martin\/code\/www\/pc_backend\/app\/config\/database.php","line":57}} This is only on my local development system, where I recently installed apache and php. On my production system on a shared host artisan commands work just fine. The prod system has it's own .env.php, but other than that the code should be identical. Relevant files: .env.local.php <? return array( 'DB_HOSTNAME' => 'localhost', 'DB_USERNAME' => 'root', 'DB_NAME' => 'pc_booking', 'DB_PASSWORD' => 'secret', ); app/config/database.php <?php return array( 'fetch' => PDO::FETCH_CLASS, 'default' => 'mysql', 'connections' => array( 'mysql' => array( 'driver' => 'mysql', 'host' => $_ENV['DB_HOSTNAME'], 'database' => $_ENV['DB_NAME'], 'username' => $_ENV['DB_USERNAME'], 'password' => $_ENV['DB_PASSWORD'], 'charset' => 'utf8', 'collation' => 'utf8_unicode_ci', 'prefix' => '', ), ), 'migrations' => 'migrations', ), ); The $_ENV array is populated as expected on the website - the problem appears to be with artisan only.

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  • jQuery each loop - using variables

    - by Sam
    I have a list of products. Each product has a title and a review link. Currently the titles link directly to the individual product page, and the review links go elsewhere. I'd like to use a jquery each loop to cycle through each li, take the href from the title (the first link), and apply it to the review link (the second link), so they both point to the product page. Simplified code would be as follows: <ul> <li><a href="product1.html">Product 1</a><a href="review1.html">Review 1</a></li> <li><a href="product2.html">Product 2</a><a href="review2.html">Review 2</a></li> <li><a href="product3.html">Product 3</a><a href="review3.html">Review 3</a></li> </ul> I thought it would be something like the following: $("li").each(function(){ var link = $("a:eq(0)").attr('href'); $("a:eq(1)").attr("href", link); }); But it always uses the same variable "link". Can someone help me out?

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  • How to access parent window variables from object

    - by Pickle
    I've got an XHTML 1.1 Strict document that is loading another XHTML 1.1 document in an <object> element (as <iframe> isn't part of the XHTML 1.1 spec). I'm having trouble in IE8 (don't care about 6 or 7) with accessing a javascript variable, Lightbox, in the parent window, from the document loaded in the <object>. In Firefox and everywhere I've seen online, I can just use window.parent.Lightbox. In IE8 however, I get it being undefined. window.parent does give me an object but it doesn't have my Lightbox variable. I've also tried window.Lightbox, window.top.Lightbox, and window.top.document.Lightbox, but all return undefined. I should mention I'm using Javascript to set the data property of the <object> - but I don't see how that could affect anything relevant. What Javascript Fu do I need to do to be able to access my Lightbox variable?

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  • Using Array Variables For FILE_GET_CONTENTS

    - by Whoshooter
    I have a script all done now and everything has been debugged and it works, except for the last hurdle. This script grabs pertinent information on bank web sites, takes that data and uses it to populate a template and then it's all posted to Wordpress - BUT I get an error because the file_get_contents function fails taking each url from the Array. I've var_dumped the array and all the URLS are there in the [0] key, so this is what I tried. master data is the scraped URL source the script uses urlscrape_array is the collection of URLS $master_data = file_get_contents($urlscrape_array[0]); When I run the script using a URL like below it works beautifully every time; $master_data = file_get_contents("http://www.somesite/somepage.html"); This is the error I get when I try to use the first example' Warning: file_get_contents() expects parameter 1 to be string, array given in /home3/path/public_html/mysite.com/boise_project/scriptmainpage.php on line 13 As requested here is a sample of the var_dump on $urlscrape_array[0] array(504) { [0]=> string(56) "http://www.somepage.com/somepage-3178.html" [1]=> string(54) "http://www.somepage.com/somepage-16.html" [2]=> string(56) "http://www.somepage.com/somepage-3202.html" [3]=> string(56) "http://www.somepage.com/somepage-4324.html" [4]=> string(56) "http://www.somepage.com/somepage-4777.html" [5]=> string(56) "http://www.somepage.com/somepage-5140.html" [6]=> string(56) "http://www.somepage.com/somepage-5220.html" [7]=> string(56) "http://www.somepage.com/somepage-9205.html" [8]=> string(56) "http://www.somepage.com/somepage-3251.html" [9]=> string(56) "http://www.somepage.com/somepage-3323.html" [10]=> string(56) "http://www.somepage.com/some-page-3797.html" [11]=> string(56) "http://www.somepage.com/some-page-4145.html" [12]=> string(56) "http://www.somepage.com/some-page-3191.html" [13]=> string(55) "http://www.somepage.com/some-page-329.html" [14]=> string(56) etc.... Error as per the foreach statement provided by Uptown Warning: Invalid argument supplied for foreach() in /home3/bettyt45/public_html/bdbud.com/boise_project/boise-wordpress.php on line 12 NULL print_r resulst below; Array ( [0] => Array ( [0] => http://www.somesite.com/some-page-3178.html [1] => http://www.somesite.com/some-page-16.html [2] => http://www.somesite.com/some-page-3202.html [3] => http://www.somesite.com/some-page-4324.html [4] => http://www.somesite.com/some-page-4777.html [5] => http://www.somesite.com/some-page-5140.html [6] => http://www.somesite.com/some-page-5220.html [7] => http://www.somesite.com/some-page-9205.html [8] => http://www.somesite.com/some-page-3251.html [9] => http://www.somesite.com/some-page-3323.html [10] => http://www.somesite.com/some-page-3797.html [11] => http://www.somesite.com/some-page-4145.html [12] => http://www.somesite.com/some-page-3191.html [13] => http://www.somesite.com/some-page-329.html [14] => http://www.somesite.com/some-page-3341.html [15] => http://www.somesite.com/some-page-3758.html [16] => http://www.somesite.com/some-page-4180.html [17] => http://www.somesite.com/some-page-9014.html [18] => http://www.somesite.com/some-page-5987.html [19] => http://www.somesite.com/some-page-1542.html [20] => http://www.somesite.com/some-page-3004.html [21] => http://www.somesite.com/some-page-9034.html [22] => http://www.somesite.com/some-page-3385.html [23] => http://www.somesite.com/some-page-3435.html [24] => http://www.somesite.com/some-page-6389.html [25] => http://www.somesite.com/some-page-6992.html [26] => http://www.somesite.com/some-page-7051.html HERE IS THE CODE I USED TO CREATE THE ARRAY ABOVE; $urlscrape_data = file_get_contents('http://www.bdbud.com/boise_project/boise-urls.htm'); preg_match_all('~http\:\/\/www.creditunionsonline.com\/credit\-union\-\d{1,4}?\.html~', $urlscrape_data, $urlscrape_matches); $urlscrape_array = $urlscrape_matches;

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  • problem with multiple ajax HTTP get requests with different imput variables using jQuery

    - by Thanasis
    I want to make asychronous get requests and to take different results based on the input that I provide to each one. Here is my code: param=1; $.get('http://localhost/my_page_1.php', param, function(data) { alert("id = "+param); $('.resul 5.t').html(data); }); param=2; $.get('http://localhost/my_page_2.php', param, function(data) { alert("id = "+param); $('.result').html(data); }); The result for both requests is: "id = 2" I want the results to be: "id = 1" for the 1st request, and "id = 2" for the second one.. I want to do this for many requests in one HTML file and integrate the results into the HTML as soon as they are ready. Can anyone help me to solve this problem? thank you in advance, Thanasis

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  • C++: Trouble with Pointers, loop variables, and structs

    - by Rosarch
    Consider the following example: #include <iostream> #include <sstream> #include <vector> #include <wchar.h> #include <stdlib.h> using namespace std; struct odp { int f; wchar_t* pstr; }; int main() { vector<odp> vec; ostringstream ss; wchar_t base[5]; wcscpy_s(base, L"1234"); for (int i = 0; i < 4; i++) { odp foo; foo.f = i; wchar_t loopStr[1]; foo.pstr = loopStr; // wchar_t* = wchar_t ? Why does this work? foo.pstr[0] = base[i]; vec.push_back(foo); } for (vector<odp>::iterator iter = vec.begin(); iter != vec.end(); iter++) { cout << "Vec contains: " << iter->f << ", " << *(iter->pstr) << endl; } } This produces: Vec contains: 0, 52 Vec contains: 1, 52 Vec contains: 2, 52 Vec contains: 3, 52 I would hope that each time, iter->f and iter->pstr would yield a different result. Unfortunately, iter->pstr is always the same. My suspicion is that each time through the loop, a new loopStr is created. Instead of copying it into the struct, I'm only copying a pointer. The location that the pointer writes to is getting overwritten. How can I avoid this? Is it possible to solve this problem without allocating memory on the heap?

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  • Copying blocks (ie: copying them to instance variables) in Objective-C

    - by RyanWilcox
    I'm trying to understand blocks. I get how to use them normally, when passed directly to a method. I'm interested now in taking a block, storing it (say) in an instance variable and calling it later. The blocks programming guide makes it sound like I can do this, by using Block_copy / retain to copy the block away, but when I try to run it I crash my program. - (void) setupStoredBlock { int salt = 42; m_storedBlock = ^(int incoming){ return 2 + incoming + salt; }; [m_storedBlock retain]; } I try to call it later: - (void) runStoredBlock { int outputValue = m_storedBlock(5); NSLog(@"When we ran our stored blockwe got back: %d", outputValue); [m_storedBlock release]; } Anyone have any insights? (Or, is there something I'm not getting with blocks?) Thank you very much!

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  • How to use Multiple Variables for a lock Scope in C#

    - by Gunner
    I have a situation where a block of code should be executed only if two locker objects are free. I was hoping there would be something like: lock(a,b) { // this scope is in critical region } However, there seems to be nothing like that. So does it mean the only way for doing this is: lock(a) { lock(b) { // this scope is in critical region } } Will this even work as expected? Although the code compiles, but I am not sure whether it would achieve what I am expecting it to.

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  • Public static variables and Android activity life cycle management

    - by jsstp24n5
    According to the documentation the Android OS can kill the activity at the rear of the backstack. So, say for example I have an app and open the Main Activity (let's call it Activity A). In this public activity class I declare and initialize a public static variable (let's call it "foo"). In Activity A's onCreate() method I then change the value of "foo." From Activity A the user starts another activity within my app called Activity B. Variable "foo" is used in Activity B. Activity B is then paused after the user navigates to some other activities in other apps. Eventually, after a memory shortage occurs, Activity A then Activity B can be killed. After the user navigates back to my app it restarts (actually "recreates") activity B. What happens: 1) Will variable "foo" at this point have the value that was set to it when Activity A's onCreate() method ran? 2) Variable "foo" does not exist? 3) Variable "foo" exists and but is now the initialized value and not the value set in Activity A's onCreate() method?

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  • Powershell - Using variables in -Include filter

    - by TheD
    (again!) My final question for the night. I have a function which uses the Get-ChildItem to work out the newest file within a folder. The reason being I need to find the latest incremental backup in a folder and script an EXE to mount it. However, within this same folder there are multiple backup chains for all different servers: i.e. SERVER1_C_VOL_b001_i015.spi SERVER2_D_VOL_b001_i189.spi SERVER1_C_VOL_b002_i091.spi SERVER1_E_VOL_b002_i891.spi (this is the newest file created) I want only to look at SERVER1, look at only the C_VOL and look at only b001 - nothing else. I have all these seperate components: the drive letter, the Server Name, the b00X number stored in array. How then can I go and use the Get-ChildItem with the -Include filter to only look at: .spi SERVER1 C_VOL b001 Given I have all of these separate components in an array taken from a text file: Get-Content .\PostBackupCheck-TextFile.txt | Select-Object -First $i { $a = $_ -split ' ' ; $locationArray += "$($a[0]):\$($a[1])\$($a[2])" ; $imageArray += "$($a[2])_$($a[3])_VOL_b00$($a[4])_i$($a[5]).spi" } I then go onto try and filter then and then get stuck: $latestIncremental = Get-ChildItem -Path ${shadowProtectDataLocation}\*.* -Include *.spi | Sort-Object LastAccessTime -Descending | Select-Object -First 1 I have the .spi filtered, but how can I also just include the C (for volume), the number for the b00x and the server name. Thanks!

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  • C++ missing feature: variables with mutating names

    - by user345671
    Hello. Can someone please add a feature to C++? I would like to change variable names depending on the context. Example: Class stuff; if(stuff.hasSuperPowers()) { stuff becomes stuffWithSuperPowers; } That because creating a new variable and using an assignment sucks and lets stuff be acessible in that scope anyway. If you do it, please keep the becomes syntax unless it doesn't look good enough for you as a native English speaker. Thanks in advance.

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  • PHP if statement - select two different get variables?

    - by arsoneffect
    Below is my example script: <li><a <?php if ($_GET['page']=='photos' && $_GET['view']!=="projects"||!=="forsale") { echo ("href=\"#\" class=\"active\""); } else { echo ("href=\"/?page=photos\""); } ?>>Photos</a></li> <li><a <?php if ($_GET['view']=='projects') { echo ("href=\"#\" class=\"active\""); } else { echo ("href=\"/?page=photos&view=projects\""); } ?>>Projects</a></li> <li><a <?php if ($_GET['view']=='forsale') { echo ("href=\"#\" class=\"active\""); } else { echo ("href=\"/?page=photos&view=forsale\""); } ?>>For Sale</a></li> I want the PHP to echo the "href="#" class="active" only when it is not on the two pages: ?page=photos&view=forsale or ?page=photos&view=projects

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  • Javascript storing properties and functions in variables

    - by richard
    Hello, I'm having trouble with my programming style and I hope to get some feedback here. I recently bought Javascript: The Good Parts and while I find this a big help, I'm still having trouble designing this application. Especially when it comes to writing function and methods. Example: I have a function that let's the user switches games in my app. This function updates game-specific information in the current view. var games = { active: Titanium.App.Properties.getString('active_game'), gameswitcher_positions: { 'Game 1': 0, 'Game 2': 1, 'Game 3': 2, 'Game 4': 3, 'Game 5': 4 }, change: function(game) { if (active_game !== game) { gameswitcher.children[this.gameswitcher_positions[this.active]].backgroundImage = gameswitcher.children[this.gameswitcher_positions[this.active]].backgroundImage.replace('_selected', ''); gameswitcher.children[this.gameswitcher_positions[game]].backgroundImage = gameswitcher.children[this.gameswitcher_positions[game]].backgroundImage.replace('.png', '_selected.png'); events.update(game); this.active = game; } }, init: function() { gameswitcher.children[this.gameswitcher_positions[this.active]].backgroundImage = gameswitcher.children[this.gameswitcher_positions[this.active]].backgroundImage.replace('.png', '_selected.png'); events.update(this.active); } }; gameswitcher is a container view which contains buttons to switch games. I am not satisfied with this approach but I cannot think of a better one. Should I place the gameswitcher_positions outside of the variable in a seperate variable instead of as a property? And what about the active game? Please give me feedback, what am I doing wrong?

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  • Java programming accessing object variables

    - by Haxed
    Helo, there are 3 files, CustomerClient.java, CustomerServer.java and Customer.java PROBLEM: In the CustomerServer.java file, i get an error when I compile the CustomerServer.java at line : System.out.println(a[k].getName()); ERROR: init: deps-jar: Compiling 1 source file to C:\Documents and Settings\TLNA\My Documents\NetBeansProjects\Server\build\classes C:\Documents and Settings\TLNA\My Documents\NetBeansProjects\Server\src\CustomerServer.java:44: cannot find symbol symbol : method getName() location: class Customer System.out.println(a[k].getName()); 1 error BUILD FAILED (total time: 0 seconds) CustomerClient.java import java.io.*; import java.net.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.border.*; public class CustomerClient extends JApplet { private JTextField jtfName = new JTextField(32); private JTextField jtfSeatNo = new JTextField(32); // Button for sending a student to the server private JButton jbtRegister = new JButton("Register to the Server"); // Indicate if it runs as application private boolean isStandAlone = false; // Host name or ip String host = "localhost"; public void init() { JPanel p1 = new JPanel(); p1.setLayout(new GridLayout(2, 1)); p1.add(new JLabel("Name")); p1.add(jtfName); p1.add(new JLabel("Seat No.")); p1.add(jtfSeatNo); add(p1, BorderLayout.CENTER); add(jbtRegister, BorderLayout.SOUTH); // Register listener jbtRegister.addActionListener(new ButtonListener()); // Find the IP address of the Web server if (!isStandAlone) { host = getCodeBase().getHost(); } } /** Handle button action */ private class ButtonListener implements ActionListener { public void actionPerformed(ActionEvent e) { try { // Establish connection with the server Socket socket = new Socket(host, 8000); // Create an output stream to the server ObjectOutputStream toServer = new ObjectOutputStream(socket.getOutputStream()); // Get text field String name = jtfName.getText().trim(); String seatNo = jtfSeatNo.getText().trim(); // Create a Student object and send to the server Customer s = new Customer(name, seatNo); toServer.writeObject(s); } catch (IOException ex) { System.err.println(ex); } } } /** Run the applet as an application */ public static void main(String[] args) { // Create a frame JFrame frame = new JFrame("Register Student Client"); // Create an instance of the applet CustomerClient applet = new CustomerClient(); applet.isStandAlone = true; // Get host if (args.length == 1) { applet.host = args[0]; // Add the applet instance to the frame } frame.add(applet, BorderLayout.CENTER); // Invoke init() and start() applet.init(); applet.start(); // Display the frame frame.pack(); frame.setVisible(true); } } CustomerServer.java import java.io.*; import java.net.*; public class CustomerServer { private String name; private int i; private ObjectOutputStream outputToFile; private ObjectInputStream inputFromClient; public static void main(String[] args) { new CustomerServer(); } public CustomerServer() { Customer[] a = new Customer[30]; try { // Create a server socket ServerSocket serverSocket = new ServerSocket(8000); System.out.println("Server started "); // Create an object ouput stream outputToFile = new ObjectOutputStream( new FileOutputStream("student.dat", true)); while (true) { // Listen for a new connection request Socket socket = serverSocket.accept(); // Create an input stream from the socket inputFromClient = new ObjectInputStream(socket.getInputStream()); // Read from input //Object object = inputFromClient.readObject(); for (int k = 0; k <= 2; k++) { if (a[k] == null) { a[k] = (Customer) inputFromClient.readObject(); // Write to the file outputToFile.writeObject(a[k]); //System.out.println("A new student object is stored"); System.out.println(a[k].getName()); break; } if (k == 2) { //fully booked outputToFile.writeObject("All seats are booked"); break; } } } } catch (ClassNotFoundException ex) { ex.printStackTrace(); } catch (IOException ex) { ex.printStackTrace(); } finally { try { inputFromClient.close(); outputToFile.close(); } catch (Exception ex) { ex.printStackTrace(); } } } } Customer.java public class Customer implements java.io.Serializable { private String name; private String seatno; public Customer(String name, String seatno) { this.name = name; this.seatno = seatno; } public String getName() { return name; } public String getSeatNo() { return seatno; } }

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