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  • json object to checked checkboxes

    - by webmaster_sean
    I have this: <div id="taglist"> <input type="checkbox" name="chkB1" id="chkB1" value="Mon" />&nbsp;Monday&nbsp;&nbsp; <input type="checkbox" name="chkB2" id="chkB2" value="Tue" />&nbsp;Tuesday&nbsp;&nbsp; <input type="checkbox" name="chkB3" id="chkB3" value="Wed" />&nbsp;Wednesday&nbsp;&nbsp; <input type="checkbox" name="chkB4" id="chkB4" value="Thu" />&nbsp;Thursday&nbsp;&nbsp;<br /> <input type="checkbox" name="chkB5" id="chkB5" value="Fri" />&nbsp;Friday&nbsp;&nbsp; <input type="checkbox" name="chkB6" id="chkB6" value="Sat" />&nbsp;Saturday&nbsp;&nbsp; <input type="checkbox" name="chkB7" id="chkB7" value="Sun" />&nbsp;Sunday&nbsp;&nbsp; <input type="hidden" name="source_frequency" id="source_frequency" value="" /> </div> And this: var days = ["Mon","Tue","Wed","Sun"]; I want the values from days make the corresponding check boxes checked. How would one do such a thing :-)

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  • C++: Appending a vector to a vector

    - by sub
    Assuming I have 2 STL vectors: vector<int> a; vector<int> b; Let's also say the both have around 30 elements. How do I add the vector b to the end of vector a? The dirty way would be iterating through b and adding each element via push_back, though I wouldn't like to do that!

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  • What C++ pitfalls should I avoid ?

    - by Craig H
    I remember first learning about vectors in the STL and after some time, I wanted to use a vector of bools for one of my projects. After seeing some strange behavior and doing some research, I learned that a vector of bools is not really a vector of bools. Anyone out there have any other common pitfalls to avoid in C++?

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  • Do I need to check capacity before adding an element to a vector in c++ ?

    - by Cassie
    Hi dear all, I am a newbie to c++ STL vectors so sorry for silly questions in advence. :) In my program, I have a vector which needs to store unknown number of elements. Do I have to check if the vector has achieved its max_size before adding an new element to it ? Will a c++ compiler throw an exception automatically when a program tries to add elements to a full vector ? Thank you very much, Cassie

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  • Array performance question

    - by Konrad
    I am very familiar with STL vector (and other container) performance guarantees, however I can't seem to find anything concrete about plain arrays. Are pointer arithmetic and [] methods constant or linear time?

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  • Function in c++ for finding if a word is prefix

    - by VaioIsBorn
    Let say i have some words AB, AAB, AA. AB is not a prefix to AAB but AA is a prefix to AAB because if i just add B at the end of AA it will become AAB, which is not possible with AB. So, is there any function in c++ (STL) so that i can determine of two words if one is prefix to the another ? Thanks.

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  • C++ dictionary/map with added order

    - by Gopalakrishnan Subramani
    I want to have something similar to map but while iterating I want them to be in the same order as it is added. Example map.insert("one", 1); map.insert("two", 2); map.insert("three", 3); While iterating I want the items to be like "one", ""two", "three"..By default, map doesn't provide this added order. How to get the map elements the way I have added? Anything with STL is fine or other alternative suggestions also fine

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  • Can I Have Polymorphic Containers With Value Semantics in C++11?

    - by John Dibling
    This is a sequel to a related post which asked the eternal question: Can I have polymorphic containers with value semantics in C++? The question was asked slightly incorrectly. It should have been more like: Can I have STL containers of a base type stored by-value in which the elements exhibit polymorphic behavior? If you are asking the question in terms of C++, the answer is "no." At some point, you will slice objects stored by-value. Now I ask the question again, but strictly in terms of C++11. With the changes to the language and the standard libraries, is it now possible to store polymorphic objects by value in an STL container? I'm well aware of the possibility of storing a smart pointer to the base class in the container -- this is not what I'm looking for, as I'm trying to construct objects on the stack without using new. Consider if you will (from the linked post) as basic C++ example: #include <iostream> using namespace std; class Parent { public: Parent() : parent_mem(1) {} virtual void write() { cout << "Parent: " << parent_mem << endl; } int parent_mem; }; class Child : public Parent { public: Child() : child_mem(2) { parent_mem = 2; } void write() { cout << "Child: " << parent_mem << ", " << child_mem << endl; } int child_mem; }; int main(int, char**) { // I can have a polymorphic container with pointer semantics vector<Parent*> pointerVec; pointerVec.push_back(new Parent()); pointerVec.push_back(new Child()); pointerVec[0]->write(); pointerVec[1]->write(); // Output: // // Parent: 1 // Child: 2, 2 // But I can't do it with value semantics vector<Parent> valueVec; valueVec.push_back(Parent()); valueVec.push_back(Child()); // gets turned into a Parent object :( valueVec[0].write(); valueVec[1].write(); // Output: // // Parent: 1 // Parent: 2 }

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  • Why unchecked jQuery UI radio button's label appears "checked" after refresh in FF and IE?

    - by Daj pan spokój
    I've got 2 radio buttons with labels: button A is checked by default in HTML (checked="checked"). They're then processed with jQuery UI Radio Button. When I check button B and refresh the page, B's label is displayed as checked (it has CSS ui-state-active class). And A's label is displayed as unchecked, even though it's A button that is actually checked. It happens in Firefox (3) and IE (8). In Chrome (5) it works fine - after refresh A's label is displayed as checked. <input class="ui-helper-hidden-accessible" id="show-all-hotels" name="radio" CHECKED="CHECKED" type="radio"> <label aria-disabled="false" role="button" class="ui-button ui-widget ui-state-default ui-button-text-only ui-corner-left" aria-pressed="false" for="show-all-hotels"> <span class="ui-button-text">All tours</span> </label> <input class="ui-helper-hidden-accessible" id="show-availability" name="radio" type="radio"> <label aria-disabled="false" role="button" aria-pressed="true" class="UI-STATE-ACTIVE ui-button ui-widget ui-state-default ui-button-text-only ui-corner-right" for="show-availability"> <span class="ui-button-text">Only available at</span> </label> Do You know why is it happening and how to make checked button label appear as checked in all browsers?

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  • How to check if a checkbox in a checkbox array is checked with jquery

    - by eddy
    Hello everyone. I have a html table with a column of text boxes (mileage), all of them are disabled when the page loads, and I need that when user clicks on a check box, the text box for that column should be enabled and become a required field, and then if the user unchecks the checkbox, the textbox on that row must be disabled and the required class removed. I already have the function to enable and disable the text boxes (column mileage) when the user clicks on the corresponding checkbox, but it is written in javascript.However, for some reason it only works in IE). Here is the html code <tbody> <c:forEach items="${list}" var="item"> <tr> <td align="center"> <input type="checkbox" name="selectItems" value="<c:out value="${item.numberPlate}"/>" onchange="enableTextField(this)" /> </td> <td align="left"><c:out value="${item.numberPlate}"/></td> <td align="left"><c:out value="${item.driver.fullName}"/></td> <td align="left"><input type="text" name="mileage_<c:out value="${item.numberPlate}"/>" value="" disabled="true"/></td> </tr> </c:forEach> </tbody> And the javascript code: function enableTextField(r) { var node = r.parentNode; while( node && node.tagName !== 'TR' ) { node = node.parentNode; } var i=node.rowIndex; if(document.form1.selectItems[i-1].checked) { document.getElementById('mileage_' + document.form1.selectItems[i-1].value).disabled=false; } else { document.getElementById('mileage_' + document.form1.selectItems[i-1].value).value=""; document.getElementById('mileage_' + document.form1.selectItems[i-1].value).disabled=true; } } Now, I know that in order to add or remove dynamically validation rules I have to use: addClass('required'); o removeClass('required') ,but I don't know how to detect whether a check box is selected or not, and based on that ,enable or disable the text box for that row. I really hope you can help me out with this.

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  • how can I get data in the table cell that is checked after submit

    - by arnold
    can someone give me help, please. here's my basic html <form action="addSomething.php" method="POST"> <table> <tr> <th>Add Data</th> <th>Description</th> <th>Quantity</th> </tr> <tr> <td><input type="checkbox" name="data[]" value="sample1" /> </td> <td class="desc">Newbie</td> <td>2</td> </tr> <tr> <td><input type="checkbox" name="data[]" value="sample1" /> </td> <td class="desc">Pro</td> <td>1</td> </tr> <tr> <td><input type="checkbox" name="data[]" value="sample1"/> </td> <td class="desc" > Master </td> <td>1</td> </tr> <br/> <input type="submit" name="add" value="SUBMIT"/> ..... how can I get the one with the class "desc" and the column for quantity that is checked after submitting the form because the only I can add when querying in mysql is the value of checkbox but I want also the value of the data in "Description" column and "Quantity" column In my addSomething.php the code I have is if(isset($_POST['add'])) { foreach($_POST['data'] as $value) { $sql = "INSERT INTO tablename (column1) VALUES('$value');" //query stuff } } what I will do , Any hints guys?

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  • What is the syntax for a checked checkbox in HTML?

    - by Fiona Holder
    Sounds like a bit of a silly question, but I am wondering what is the best way of stating that a checkbox is checked/unchecked in HTML. I have seen many different examples: <input type="checkbox" checked="checked" /> <input type="checkbox" /> <input type="checkbox" checked="yes" /> <input type="checkbox" checked="no" /> <input type="checkbox" checked="true" /> <input type="checkbox" checked="false" /> Which browsers work with which ones of these, and most importantly, does jQuery figure out which box is checked in all 3?

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  • post row where radio button is checked

    - by ognjenb
    View: <form id="numbers-form" method="post" action="/Numbers/Numbers"> <table id="numbers"> <tr> <th> prvi_br </th> <th> drugi_br </th> <th> treci_br </th> </tr> <% int rb = 1; %> <% foreach (var item in Model) { %> <tr> <td> <%= Html.Encode(item.prvi_br) %> <input type="radio" name="<%= Html.Encode(rb) %>" value="<%= Html.Encode(rb) %>" id='<%= Html.Encode(item.prvi_br) %>'/> </td> <td> <%= Html.Encode(item.drugi_br) %> <input type="radio" name="<%= Html.Encode(rb)%>" value="<%= Html.Encode(rb) %>" id='<%= Html.Encode(item.drugi_br) %>'/> </td> <td> <%= Html.Encode(item.treci_br) %> <input type="radio" name="<%= Html.Encode(rb)%>" value="<%= Html.Encode(rb) %>" id='<%= Html.Encode(item.treci_br) %>'/> </td> </tr> <% rb++; %> <% } %> </table> <p> <input type="submit" value="Save" /> </p> </form> Controller action: [HttpPost] public ActionResult Numbers(int[] rb) { brojevi br = new brojevi(); for (int i = 1; i <= rb.Length; i++) //in this line I have error:Object reference not set to an instance of an object. { br.prvi_br = i; br.drugi_br = i+1; br.treci_br = i+3; } numbers.AddTobrojevi(br); numbers.SaveChanges(); return View(); } I try to post data row in wich radio button is checked but failed, what is wrong??

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  • how to count checked checkboxes in different divs

    - by KMKMAHESH
    <head><title>STUDENT WISE EXAM BACKLOGS DISPLAY FOR EXAM REGISTRATION</title> <style type="text/css"> th { font-family:Arial; color:black; border:1px solid #000; } thead { display:table-header-group; } tbody { display:table-row-group; } td { border:1px solid #000; } </style> <script type="text/javascript" > function check_value(year,sem){ ysem="ys"+year+sem; var reg=document.registration.regulation.value; subjectsys="subjects"+year+sem; amountsys="amount"+year+sem; if(year==1){ if(sem==1){ var value_list = document.getElementById("ys11").getElementsByTagName('input'); } if(sem==2){ var value_list = document.getElementById("ys12").getElementsByTagName('input'); } }elseif(year==2){ if(sem==1){ var value_list = document.getElementById("ys21").getElementsByTagName('input'); } if(sem==2){ var value_list = document.getElementById("ys22").getElementsByTagName('input'); } }elseif(year==3){ if(sem==1){ var value_list = document.getElementById("ys31").getElementsByTagName('input'); } if(sem==2){ var value_list = document.getElementById("ys32").getElementsByTagName('input'); } }elseif(year==4){ if(sem==1){ var value_list = document.getElementById("ys41").getElementsByTagName('input'); } if(sem==2){ var value_list = document.getElementById("ys42").getElementsByTagName('input'); } } values = 0; for (var i=0; i<value_list.length; i++){ if (value_list[i].checked) { values=values+1; } } document.getElementById(subjectsys).value=values; if (values=="0") { document.getElementById(amountsys).innerHTML=""; return; } if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById(amountsys).innerHTML=xmlhttp.responseText; } } xmlhttp.open("GET","fee.php?year="+year+"&reg="+reg+"&sem="+sem+"&sub="+values,true); xmlhttp.send(); } </script> </head> <form id="registration" name="registration" action=subverify.php method=POST></br></br> <center> Backlog Subjects for <b>08KN1A1219</b> </br></br> <table border='1'><tr> <th width='40'>&nbsp;</th><th width='90'>Regulation</th><th width='40'>Year</th> <th width='40'>Sem</th><th width='350'>Subname</th> <th width='70'>Internals</th><th width='70'>Externals</th> </tr><div id="ys41"><tr> <td width='40'><center><input type="checkbox" name="sub[]" value="344" onclick="check_value(4,1)"></center></td> <td width='90'><center>R07</center></td><td width='40'><center>4</center></td><td width='40'><center>1</center></td> <td width='350'>EMBEDDED SYSTEMS</td><td width='70'><center>18</center></td> <td width='70'><center>17</center></td></tr><tr><td colspan=5 align=right><b>Subjects: </b><input size=2 type=textbox id=subjects41 name=subjects41 value=0 maxlength=2 readonly=readonly></td> <td align=right><b>Amount :</b></td> <input type='hidden' name='regulation' id=regulationsubjects41 value='R07'> <td><div id="amount41"><input type="textbox" name="amountval41" value="0" size="5" maxlength="5" readonly="readonly"></div></td></tr></div><div id="ys42"><tr> <td width='40'><center><input type="checkbox" name="sub[]" value="527" onclick="check_value(4,2)"></center></td> <td width='90'><center>R07</center></td><td width='40'><center>4</center></td><td width='40'><center>2</center></td> <td width='350'>DESIGN PATTERNS</td><td width='70'><center>12</center></td> <td width='70'><center>14</center></td></tr><tr><td colspan=5 align=right><b>Subjects: </b><input size=2 type=textbox id=subjects42 name=subjects42 value=0 maxlength=2 readonly=readonly></td> <td align=right><b>Amount :</b></td> <input type='hidden' name='regulation' id=regulationsubjects42 value='R07'> <td><div id="amount42"><input type="textbox" name="amountval42" value="0" size="5" maxlength="5" readonly="readonly"></div></td></tr></div><tr><td colspan=7><center><b><div id="maintotal"><input type="textbox" name="maintotal" value="0" size="5" maxlength="5" readonly="readonly"></div></center></b></td></tr><tr></tr></table></br></br> <center><input type='hidden' name='htno' value='08KN1A1219'> <input type='submit' value='Register'></center></form></br> this is a output of a php file with using dynamic data in the form i want to count only the checkboxes in the div and it has to display in that subjectsdiv like subjects41 and subjects42 can any one please help me to update this javascript it passes some ajax request for displaying the fee

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  • C++ find method is not const?

    - by Rachel
    I've written a method that I'd like to declare as const, but the compiler complains. I traced through and found that this part of the method was causing the difficulty: bool ClassA::MethodA(int x) { bool y = false; if(find(myList.begin(), myList.end(), x) != myList.end()) { y = true; } return y; } There is more happening in the method than that, but with everything else stripped away, this was the part that didn't allow the method to be const. Why does the stl find algorithm prevent the method from being const? Does it change the list in any way?

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  • defining < operator for map of list iterators

    - by Adrian
    I'd like to use iterators from an STL list as keys in a map. For example: using namespace std; list<int> l; map<list<int>::const_iterator, int> t; int main(int argv, char * argc) { l.push_back(1); t[l.begin()] = 5; } However, list iterators do not have a comparison operator defined (in contrast to random access iterators), so compiling the above code results in an error: /usr/include/c++/4.2.1/bits/stl_function.h:227: error: no match for ‘operator<’ in ‘__x < __y’ If the list is changed to a vector, a map of vector const_iterators compiles fine. What is the appropriate way to define the operator < for list::const_iterator?

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  • std::deque: How do I get an iterator pointing to the element at a specified index?

    - by Ptah- Opener of the Mouth
    I have a std::deque, and I want to insert an element at a specified index (I'm aware that std::list would be better at this). The deque::insert() function takes an iterator to specify the location to insert. Given an index, how can I get an iterator pointing to that location, so that I can pass that iterator to insert()? For example: void insertThing ( deque<Thing> & things, Thing thing, size_t index ) { deque<Thing>::iterator it = /* what do I do here? */ things.insert ( it, thing ); } I'm sure this is a very basic question, and I apologize for it. It's been a long time since I've used the STL, and I don't see anything in std::deque's member list that obviously does what I want. Thanks.

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  • Initialization of std::vector<unsigned int> with a list of consecutive unsigned integers

    - by Thomas
    I want to use a special method to initialize a std::vector<unsigned int> which is described in a C++ book I use as a reference (the German book 'Der C++ Programmer' by Ulrich Breymann, in case that matters). In that book is a section on sequence types of the STL, referring in particular to list, vector and deque. In this section he writes that there are two special constructors of such sequence types, namely, if Xrefers to such a type, X(n, t) // creates a sequence with n copies of t X(i, j) // creates a sequence from the elements of the interval [i, j) I want to use the second one for an interval of unsigned int, that is std::vector<unsigned int> l(1U, 10U); to get a list initialized with {1,2,...,9}. What I get, however, is a vector with one unsigned int with value 10 :-| Does the second variant exist, and if yes, how do I force that it is called?

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  • Is there a standard Cyclic Iterator in C++

    - by Hippicoder
    Based on the following question: Check if one string is a rotation of other string I was thinking of making a cyclic iterator type that takes a range, and would be able to solve the above problem like so: std::string s1 = "abc" ; std::string s2 = "bca" ; std::size_t n = 2; // number of cycles cyclic_iterator it(s2.begin(),s2.end(),n); cyclic_iterator end; if (std::search(it, end, s1.begin(),s1.end()) != end) { std::cout << "s1 is a rotation of s2" << std::endl; } My question, Is there already something like this available? I've check Boost and STL doesn't have one. I've got a simple hand-written one but would rather use an already made/tested implementation.

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