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  • store in a variable only the first or only the second class of an element

    - by shecky
    I'm using this bit of jQ to add a class to two different elements based on the class of another (parent/grandparent, etc) element: $(document).ready(function(){ var containerClass = $('#main-content').attr('class'); $('#nav-primary li#'+containerClass).addClass('active'); $('#aux-left div[id$='+containerClass+']').addClass('active'); }); Brilliant, but I have two problems with it: First, when there's no class at all in <div id="main-content">, the 'active' class is added to all the #nav-primary LIs, and also to all the #aux-left DIVs; how can I modify this so that in the absence of any class on #main-content, do nothing? Second, how can I target only the first or second of multiple classes to store in the 'containerClass' variable, e.g., <div id="main-content" class="apples bananas">? Very much appreciated! svs

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  • Can you get the previous value of a variable in Java?

    - by The Special One
    Say way have a variable (let's say String Str) and the value of Str starts of as " " then as some code is running it is set to "test" then somewhere else in the code it is changed again to say "tester". Now in the program I want to find out what the previous value of Str was. Is this possible in Java? So I am saying that the variable gets changed twice, and you want to find out what Str was before it got changed for the second time. So in the example above the latest value of Str would be "tester" but I wanted to find out what Str was before this (assuming you had no idea what it was before it was changed to tester) in this case I would want to be able to find out that Str was "test". Is it at all possible to do this in Java?

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  • Changing the value of a variable

    - by neirpycc
    I'm trying to build a simple scoring app but I'm running into a problem trying to keep it so I don't have to repeat a bunch of code to deal with each 'base' individually. The basic idea is that when I click a button the script will; 1) grab the ID of said button 2) split the ID into two parts - (a) the bases name and (b) the button type (plus/minus) 3) if it's plus - add to the bases score, if it's minus - subtract from the bases score 4) update the assigned div with the new value The part I'm stuck at is adding and subtracting. I can't seem to get this to work. Here is the code: $('.base button').click(function() { var b1Score = 0; var b2Score = 0; var b3Score = 0; var b4Score = 0; var b5Score = 0; var clickedButton = $(this).attr('id'); var buttonInfo = clickedButton.split('-'); var baseClicked = buttonInfo[0]; var baseDirection = buttonInfo[1]; var baseDiv = ('#' + baseClicked); console.log('You clicked ' + clickedButton + '.'); if (baseDirection.indexOf('plus') >= 0) { console.log('Increasing ' + baseClicked + '!'); ++; $(baseDiv).val(); } else { console.log('Decreasing ' + baseClicked + '!'); --; $(baseDiv).val(); } }); ++; and --; are placeholders for where the adding and subtracting needs to happen. I just can't figure out how to get it to add or subtract from the correct value. Any help is appreciated. Thanks.

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  • How do I display a sting, based on which id is set as selected?

    - by Cam
    I'd like to display a text string (to be positioned above ul) depending on which link is set to selected by the chgClass fuction. The ids for each display via an alert right now, but I can't seem to make them appear in "english". I know I can set up an array stating "id=text string" but when I do it seems to break the code I already have... <script type="text/javascript"> var Lst; function CngClass(obj){ if (typeof(obj)=='string') obj=document.getElementById(obj); if (Lst) Lst.className=''; obj.className='selected'; Lst=obj; alert(obj.id); } </script> </head> <body onload="CngClass('POSITION_WITHOUT_NOTIFY')"> <div class="slider"> <ul class="bar"> <li class="deny"><a onclick="CngClass(this);" id="POSITION_NOT_ALLOWED" href="#">Deny</a></li> <li class="askDeny"><a onclick="CngClass(this);" id="NOTIFY_POSITION_IF_GRANTED" href="#">Ask Deny</a></li> <li class="askAllow"><a onclick="CngClass(this);" id="NOTIFY_POSITION_IF_NO_RESPONSE" href="#">Ask Allow</a></li> <li class="notify"><a onclick="CngClass(this);" id="NOTIFY_POSITION" href="#">Notfiy</a></li> <li class="allow"><a onclick="CngClass(this);" id="POSITION_WITHOUT_NOTIFY" href="#">Allow</a></li> </ul> </div> </body> </html>

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  • unique random id

    - by Piyush
    I am generating unique id for my small application but I am facing some variable scope problem. my code- function create_id() { global $myusername; $part1 = substr($myusername, 0, -4); $part2 = rand (99,99999); $part3 = date("s"); return $part1.$part2.$part3; } $id; $count=0; while($count == 1) { $id; $id=create_id(); $sqlcheck = "Select * FROM ruser WHERE userId='$id';"; $count =mysql_query($sqlcheck,$link)or die(mysql_error()); } echo $id; I dont know which variable I have to declare as global

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  • Java: global values inside a class?

    - by HH
    I want less methods. I want a common global TestClass from which I could use any of its value inside the class. import java.util.*; import java.io.*; public class TestClass { TestClass(String hello){ String hallo = hello; String halloSecond = "Saluto!"; } public static void main(String[] args) { TestClass test = new TestClass("Tjena!"); System.out.println("I want "Tjena!": " + test.hallo); TestClass testSecond = new TestClass("1"); System.out.println("I want Saluto!:" + test.halloSecond); System.out.println("I want Saluto!:" + testSecond.halloSecond); } }

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  • PHP contact form, am I doing it wrong?

    - by decimal
    I'm learning PHP and I'm trying to write a simple email script. I have a function (checkEmpty) to check if all the forms are filled in and if the email adress is valid (isEmailValid). I'm not sure how to return true checkEmpty funciton. Here's my code: When the submit button is clicked: if (isset($_POST['submit'])) { //INSERT FORM VALUES INTO AN ARRAY $field = array ('name' => $_POST['name'], 'email' => $_POST['email'], 'message' => $_POST['message']); //CONVERT ARRAY KEYS TO VARIABLE NAMES extract ($field); checkEmpty($name, $email, $message); function checkEmpty($name, $email, $message) { global $name_error; global $mail_error; global $message_error; //CHECK IF NAME FIELD IS EMPTY if (isset($name) === true && empty($name) === true) { $name_error = "<span class='error_text'>* Please enter your name</span>"; } //CHECK IF EMAIL IS EMPTY if (isset($email) === true && empty($email) === true) { $mail_error = "<span class='error_text'>* Please enter your email address</span>"; //AND IF IT ISN'T EMPTY CHECK IF IT IS A VALID ONE } elseif (!isValidEmail($email)) { $mail_error = "<span class='error_text'> * Please enter a valid email</span>"; } //CHECK IF MESSAGE IS EMPTY if (isset($message) === true && empty($message) === true) { $message_error = "<span class='error_text'>* Please enter your message</span>"; } } // This function tests whether the email address is valid function isValidEmail($email){ $pattern = "^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$"; if (eregi($pattern, $email)) { return true; } else { return false; } } I know I shouldn't be using globals in the function, I don't know an alternative. The error messages are display beside each form element.

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  • Prevent Session from being created In some cases

    - by Jean Barmash
    In my app, I have an external monitor that pings the app ever few minutes and measures its uptime / response time Every time the monitor connects, a new server session is created, so when I look at the number of sessions, it's always a minimum of 15, even during times where there are no actual users. I tried to address this with putting the session creation code into a filter, but that doesn't seem to do it - I guess session automatically gets created when the user opens the first page? all() { before = { if (actionName=='signin') { def session = request.session //creates session if not exists } } } I can configure the monitor to pass in a paramter if I need to (i.e. http://servername.com/?nosession, but not sure how to make sure the session isn't created.

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  • How do I execute a sql statement through a variable (dyname sql) that tries to do an insert into a variable table?

    - by Testifier
    If I do what I wanna do with a TEMPORARY TABLE, it works fine: DECLARE @CTRFR VARCHAR(MAX) SET @CTRFR = 'select blah blah blah' -- <-- very long select statement. this returns a 0 or some greater number. Please note! --> I NEED THIS NUMBER. IF EXISTS ( SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo][#CTRFRResult]') AND type IN ( N'U' ) ) DROP TABLE [dbo].[#CTRFRResult] CREATE TABLE #CTRFRResult ( CTRFRResult VARCHAR(MAX) ) SET @CTRFR = 'insert into #CTRFRResult ' + @CTRFR EXEC(@CTRFR) The above works fine. The problem is that several databases are using the same TEMP table. Therefore I need to use a VARIABLE table (instead of a temporary table). What I have below is not working because it says that the table must be declared. DECLARE @CTRFRResult TABLE ( CTRFRResult VARCHAR(MAX) ) SET @CTRFR = 'insert into @CTRFRResult ' + @CTRFR -- I think the issue is here. EXEC(@CTRFR) Setting @CTRFR to 'insert into...' is not working because I'm assuming the table name is out of scope. How would I go about mimicking the temporary table code using a variable table?

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  • Calling some functions before main in C

    - by minjang
    I'd like to do some stuffs before main function. I have multiple source files. In each file, there is some work that needs to be done before main. It was no problem in C++, but problematic with C. In C++, this can be done by two ways: Exploiting a constructor of a global class/struct. Calling a function to a global variable For example, static const int __register_dummy_ = __AddRegisterMetaInfo(...); However, in C, either ways is impossible. Obviously, there is no constructor. So, the first option is inherently impossible. I thought that the second option would be possible, but not compiled in C (I tested only with Visual C++. It gives C2099.). C only allows a constant to a non-automatic variable. Is there any way to call some functions before main?

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  • Please Help to locate the error

    - by jagdeep
    using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; public partial class expt2 : System.Web.UI.Page { double result ; protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) result = 0.0; protected void Chkbxbd_CheckedChanged(object sender, EventArgs e) { if (Chkbxbd.Checked) { txtbxttl.Text = "" + 10000; result += double.Parse(txtbxttl.Text); } else result = result - 10000; } protected void Chkbxsfa_CheckedChanged(object sender, EventArgs e) { if (Chkbxsfa.Checked) { txtbxttl.Text = "" + 15000; result += double.Parse(txtbxttl.Text); } else result = result - 15000; } protected void btnttl_Click(object sender, EventArgs e) { txtbxttl.Text = "" + result; } } In this code the individual value for checkbox is ok but when the total is made it becomes 0. Please help me to fix it.

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  • In Ruby, how to write a method to display any object's instance variable names and its values

    - by Jian Lin
    Given any object in Ruby (on Rails), how can I write a method so that it will display that object's instance variable names and its values, like this: @x: 1 @y: 2 @link_to_point: #<Point:0x10031b298 @y=20, @x=38> I also want to be able to print <br> to the end of each instance variable's value so as to print them out nicely on a webpage. the difficulty now seems to be that not every instance variable has an accessor, so it can't be called with obj.send(var_name) (the var_name has the "@" removed, so "@x" becomes "x")

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  • Javascript Global Variable in Array

    - by user1387727
    My question may be very easy to lots of people, but I am new to Javascript. I really do not know what is wrong with the following codes. var newValue = 1; function getCurrentAmount() { return [newValue,2,3]; } var result = getCurrentAmount(); console.log(result[0] + "" + result[1] + result[2]); In the above code, the result shown in console is: undefined23 Why is the result not "123"? I am trying to use global variable because I want to increment newValue by 1 each time when the function is called. I want something like the following: var newValue = 1; function getCurrentAmount() { newValue ++; return [newValue,2,3]; } setInterval(function(){ var result = getCurrentAmount(); console.log(result[0] + "" + result[1] + result[2]); }, 1000); Also, I just tired the following codes and it works as expected. var newValue =1; function test() { newValue ++; return newValue; } console.log(test()); So I think the problem is about the Array. I hope my question is clear enough. Thanks in advance.

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  • JavaScript: Can I declare a variable by querying which function is called? (Newbie)

    - by belle3WA
    I'm working with an existing JavaScript-powered cart module that I am trying to modify. I do not know JS and for various reasons need to work with what is already in place. The text that appears for my quantity box is defined within an existing function: function writeitems() { var i; for (i=0; i<items.length; i++) { var item=items[i]; var placeholder=document.getElementById("itembuttons" + i); var s="<p>"; // options, if any if (item.options) { s=s+"<select id='options"+i+"'>"; var j; for (j=0; j<item.options.length; j++) { s=s+"<option value='"+item.options[j].name+"'>"+item.options[j].name+"</option>"; } s=s+"</select>&nbsp;&nbsp;&nbsp;"; } // add to cart s=s+method+"Quantity: <input id='quantity"+i+"' value='1' size='3'/> "; s=s+"<input type='submit' value='Add to Cart' onclick='addtocart("+i+"); return false;'/></p>"; } placeholder.innerHTML=s; } refreshcart(false); } I have two different types of quantity input boxes; one (donations) needs to be prefaced with a dollar sign, and one (items) should be blank. I've taken the existing additem function, copied it, and renamed it so that there are two identical functions, one for items and one for donations. The additem function is below: function additem(name,cost,quantityincrement) { if (!quantityincrement) quantityincrement=1; var index=items.length; items[index]=new Object; items[index].name=name; items[index].cost=cost; items[index].quantityincrement=quantityincrement; document.write("<span id='itembuttons" + index + "'></span>"); return index; } Is there a way to declare a global variable based on which function (additem or adddonation) is called so that I can add that into the writeitems function so display or hide the dollar sign as needed? Or is there a better solution? I can't use HTML in the body of the cart page because of the way it is currently coded, so I'm depending on the JS to take care of it. Any help for a newbie is welcome. Thanks!

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  • Saving Data to Registry on Windows 7

    - by Jim Fell
    I heard that Windows 7 restricts access to its registry, so that applications cannot write directly to it. Is this so? I am developing an application in C#, and I would like to be able to save things such as port settings, last file used, etc. between sessions. Is the registry still a good option, or is there another preferred means of doing this now? Thanks.

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  • Static variable for optimization

    - by keithjgrant
    I'm wondering if I can use a static variable for optimization: public function Bar() { static $i = moderatelyExpensiveFunctionCall(); if ($i) { return something(); } else { return somethingElse(); } } I know that once $i is initialized, it won't be changed by by that line of code on successive calls to Bar(). I assume this means that moderatelyExpensiveFunctionCall() won't be evaluated every time I call, but I'd like to know for certain. Once PHP sees a static variable that has been initialized, does it skip over that line of code? In other words, is this going to optimize my execution time if I make a lot of calls to Bar(), or am I wasting my time?

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  • Is my Perl script grabbing environment variabless from "someplace else"?

    - by Michael Wilson
    On a Solaris box in a "mysterious production system" I'm running a Perl script that references an environment variable. No big deal. The contents of that variable from the shell both pre- and post-execution are what I expect. However, when reported by the script, it appears as though it's running in some other sub-shell which is clobbering my vars with different values for the duration of the script. Unfortunately I really can't paste the code. I'm trying to get an atomic case, but I'm at my wit's end here.

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  • Ruby - Is there a way to overwrite the __FILE__ variable?

    - by Markus Orrelly
    I'm doing some unit testing, and some of the code is checking to see if files exist based on the relative path of the currently-executing script by using the FILE variable. I'm doing something like this: if File.directory?(File.join(File.dirname(__FILE__),'..','..','directory')) blah blah blah ... else raise "Can't find directory" end I'm trying to find a way to make it fail in the unit tests without doing anything drastic. Being able to overwrite the __ FILE __ variable would be easiest, but as far as I can tell, it's impossible. Any tips?

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  • C++ reference variable again!!!

    - by kumar_m_kiran
    Hi All, I think most would be surprised about the topic again, However I am referring to a book "C++ Common Knowledge: Essential Intermediate Programming" written by "Stephen C. Dewhurst". In the book, he quotes a particular sentence (in section under Item 5. References Are Aliases, Not Pointers), which is as below A reference is an alias for an object that already exists prior to the initialization of the reference. Once a reference is initialized to refer to a particular object, it cannot later be made to refer to a different object; a reference is bound to its initializer for its whole lifetime Can anyone please explain the context of "cannot later be made to refer to a different object" Below code works for me, #include <iostream> using namespace std; int main(int argc, char *argv[]) { int i = 100; int& ref = i; cout<<ref<<endl; int k = 2000; ref = k; cout<<ref<<endl; return 0; } Here I am referring the variable ref to both i and j variable. And the code works perfectly fine. Am I missing something? I have used SUSE10 64bit linux for testing my sample program. Thanks for your input in advance.

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  • How to store double using SharedPrefrences?

    - by user3924167
    I am having trouble storing a double in the phone's memory. What are my other options if this isnt possible. Basically what the code is aiming to do using sharedprefrences is take the stored value of "Alcohol" spending and then add whatever the input is in the editText to it and then store that new value for the next time. Running total of spending on alcohol **Can someone please help with this issue and be detailed where x y & z should go in the project. The user selects from a spinner, which works. public void addInput(){ double dblCostInput = Double.valueOf(inputBox.getText().toString()); String strCategories= spinnerCategories.getSelectedItem().toString(); if(strCategories.equals("Alcohol")) { alcoholSpend = alcoholSpend + dblCostInput; inputBox.setText(""); nextInput(); inputBox.setText("Your Spending on"+strCategories+" is: " +d.format(alcoholSpend)); }

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  • How do I create if statements in php to perform a specific action depending on what form has string in it

    - by user1637284
    Im trying to create a grid on my page in each cell there will be a simple one line form. If a person enters data into lets say FieldA I would like the php to perform actionA but if the data was entered in FieldF I would like actionF performed. Is this possible without having to create a php for each cell and upload all those php files? Or is there a way to perform the GET method in each form to append the data to the end of the action url without the field name showing (ie sample.com/somestuff/fieldA instead of sample.com/somestuff/fieldname=fieldA) thus not needing php at all?

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  • send javaScript variable to php variable

    - by mrbunyrabit
    First i thought that i had to convert javascript to php, but then i found out that cant because of server and client side executions. So now I simply want to send ONE variable <script type="text/javascript"> function scriptvariable() { var theContents = "the variable"; } </script> to a php variable <?php $phpvariable ?> That function in the javascript executes when lets say i click on a button. Now i have Nooo idea how to get that phpvariable Equal to the javascript one so i can use that phpvariable to look up stuff in my Database. I know i can add it to my url or some thing, and just refresh the page.. But id like to do it with AJAX as further in my webpage i might have to use this Ajax method.. So is there an easy way to do this without having to dump pages of code on my page to do one simple thing?

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  • How do I add an object to a binary tree based on the value of a member variable?

    - by Max
    How can I get a specific value from an object? I'm trying to get a value of an instance for eg. ListOfPpl newListOfPpl = new ListOfPpl(id, name, age); Object item = newListOfPpl; How can I get a value of name from an Object item?? Even if it is easy or does not interest you can anyone help me?? Edited: I was trying to build a binary tree contains the node of ListOfPpl, and need to sort it in the lexicographic. Here's my code for insertion on the node. Any clue?? public void insert(Object item){ Node current = root; Node follow = null; if(!isEmpty()){ root = new Node(item, null, null); return; }boolean left = false, right = false; while(current != null){ follow = current; left = false; right = false; //I need to compare and sort it if(item.compareTo(current.getFighter()) < 0){ current = current.getLeft(); left = true; }else { current = current.getRight(); right = true; } }if(left) follow.setLeft(new Node(item, null, null)); else follow.setRight(new Node(item, null, null)); }

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  • C# - Must declare the scalar variable "@ms_id" - Error

    - by user1075106
    I'm writing an web-app that keeps track of deadlines. With this app you have to be able to update records that are being saved in an SQL DB. However I'm having some problem with my update in my aspx-file. <asp:GridView ID="gv_editMilestones" runat="server" DataSourceID="sql_ds_milestones" CellPadding="4" ForeColor="#333333" GridLines="None" Font-Size="Small" AutoGenerateColumns="False" DataKeyNames="id" Visible="false" onrowupdated="gv_editMilestones_RowUpdated" onrowupdating="gv_editMilestones_RowUpdating" onrowediting="gv_editMilestones_RowEditing"> <RowStyle BackColor="#F7F6F3" ForeColor="#333333" /> <Columns> <asp:CommandField ShowEditButton="True" /> <asp:BoundField DataField="id" HeaderText="id" SortExpression="id" ReadOnly="True" Visible="false"/> <asp:BoundField DataField="ms_id" HeaderText="ms_id" SortExpression="ms_id" ReadOnly="True"/> <asp:BoundField DataField="ms_description" HeaderText="ms_description" SortExpression="ms_description"/> <%-- <asp:BoundField DataField="ms_resp_team" HeaderText="ms_resp_team" SortExpression="ms_resp_team"/>--%> <asp:TemplateField HeaderText="ms_resp_team" SortExpression="ms_resp_team"> <ItemTemplate> <%# Eval("ms_resp_team") %> </ItemTemplate> <EditItemTemplate> <asp:DropDownList ID="DDL_ms_resp_team" runat="server" DataSourceID="sql_ds_ms_resp_team" DataTextField="team_name" DataValueField="id"> <%--SelectedValue='<%# Bind("ms_resp_team") %>'--%> </asp:DropDownList> </EditItemTemplate> </asp:TemplateField> <asp:BoundField DataField="ms_focal_point" HeaderText="ms_focal_point" SortExpression="ms_focal_point" /> <asp:BoundField DataField="ms_exp_date" HeaderText="ms_exp_date" SortExpression="ms_exp_date" DataFormatString="{0:d}"/> <asp:BoundField DataField="ms_deal" HeaderText="ms_deal" SortExpression="ms_deal" ReadOnly="True"/> <asp:CheckBoxField DataField="ms_active" HeaderText="ms_active" SortExpression="ms_active"/> </Columns> <FooterStyle BackColor="#CCCC99" /> <PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" /> <SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" /> <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> <AlternatingRowStyle BackColor="White" /> <EditRowStyle BackColor="#999999" /> </asp:GridView> <asp:SqlDataSource ID="sql_ds_milestones" runat="server" ConnectionString="<%$ ConnectionStrings:testServer %>" SelectCommand="SELECT [id] ,[ms_id] ,[ms_description] ,(SELECT [team_name] FROM [NSBP].[dbo].[tbl_teams] as teams WHERE milestones.[ms_resp_team] = teams.[id]) as 'ms_resp_team' ,[ms_focal_point] ,[ms_exp_date] ,(SELECT [deal] FROM [NSBP].[dbo].[tbl_deals] as deals WHERE milestones.[ms_deal] = deals.[id]) as 'ms_deal' ,[ms_active] FROM [NSBP].[dbo].[tbl_milestones] as milestones" UpdateCommand="UPDATE [NSBP].[dbo].[tbl_milestones] SET [ms_description] = @ms_description ,[ms_focal_point] = @ms_focal_point ,[ms_active] = @ms_active WHERE [ms_id] = @ms_id"> <UpdateParameters> <asp:Parameter Name="ms_description" Type="String" /> <%-- <asp:Parameter Name="ms_resp_team" Type="String" />--%> <asp:Parameter Name="ms_focal_point" Type="String" /> <asp:Parameter Name="ms_exp_date" Type="DateTime" /> <asp:Parameter Name="ms_active" Type="Boolean" /> <%-- <asp:Parameter Name="ms_id" Type="String" />--%> </UpdateParameters> </asp:SqlDataSource> You can see my complete GridView-structure + my datasource bound to this GridView. There is nothing written in my onrowupdating-function in my code-behind file. Thx in advance

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