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• How to calculate textarea cols with 100% width?

  - by sehwoo

  I set the width of a textarea to 100%, but now I need to know how many characters can fit in one row. I'm trying to write a javascript function to auto-grow/shrink a textarea. I'm trying to keep from using jquery since I just need this one function. My logic is to rows = textarea.value.split('\n'), iterate through rows and count += rows[i].length/textarea.cols, then count += rows.length, and finally textarea.rows = count. The only problem is that count is too large because textarea.cols is too small.

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• asp.net mvc jQuery $.post works but $.get doesn't

  - by iboeno

  Why would POST work but not GET? I'm not using [AcceptVerbs(HttpVerbs.Post)]. I'm calling this: public ActionResult GetTest(string key) { var test = new { HelpTest = key }; return Json(test); } And it works when I do this: $.post("/Home/GetTest", { key: options.key }, function(helpTest) { alert(helpTest.HelpTest); }); But not this: $.get("/Home/GetTest", { key: options.key }, function(helpTest) { alert(helpTest.HelpTest); }); Why would this be? Using GET returns an XMLHttpRequest.status of 500. What am I confused about?

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• Paging and edit category status

  - by jasmine

  For edit home status of category I have a link: <span class=\"ha\" title=\"Active in Homepage\">Active in Homepage</span><a href=\"?page=homestatus&id={$row['id']}\" class=\"hp\" title=\"\">Passive in home page</a> and function: function homestatus() { $ID = mysql_real_escape_string($_GET['id']); $query = "UPDATE category SET home = 0 WHERE id= $ID "; $result = mysql_query($query); if (mysql_affected_rows () == 1) { header('Location: index.php?page=categories'); } } Everything works fine but there is paging : /index.php?page=categories&pg=2 I want that an item located in pg=2, redirected to index.php?page=categories&pg=2 How can I do this? Thanks in advance

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• Javascript unload page condition

  - by Stapped

  hello, I am using the following code to prompet the user that if he left the page he can't come back. Things happened that i want to redirect the page using setTimeout function after a specific time. I want to disable checking for user leaving the page when the automatic redirection starts. <script language="javascript" type="text/javascript"> needToConfirm = true; window.onbeforeunload = askConfirm; function askConfirm(){ if (needToConfirm){ return "Please note that you might not be able to come back and watch the movie again."; } } </script>

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• Contents changed(cleared?) when access the pointer returned by std::string::c_str()

  - by justamask

  string conf()     {         vector v;         //..         v = func(); //this function returns a vector         return v[1];     }     void test()     {         const char* p = conf().c_str();         // the string object will be alive as a auto var         // so the pointer should be valid till the end of this function,right?           // ... lots of steps, but none of them would access the pointer p         // when access p here, SOMETIMES the contents would change ... Why?         // the platform is solaris 64 bit         // compiler is sun workshop 12         // my code is compiled as  ELF 32-bit MSB relocatable SPARC32PLUS Version 1, V8+ Required         // but need to link with some shared lib which are ELF 32-bit MSB dynamic lib SPARC Version 1, dynamically linked, stripped     }

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• Expectation values in MATLAB

  - by Bowler

  I have a 3D data set representing a grid of photosensors which unfortunately were not steady during use. I have estimated the pdf for the motion of the detector and I want to find the expectation value for each sensor. As I don't want to reflect my pdf (i.e. I want f(t) not f(t-tau)) I don't think I can use the matlab convolve function. Is there a function that will do what I want. I guess f I've found movavg but it seems to do something else. Also, as I'm faily new to matlab, from C, I tend to use for loops which I'm aware is not the way to use Matlab. Is there an easy way to convert my 1-D pdf to a 3D matrix that will only operate in one axis (z in this case). Something like repmat(i, j, pdf)

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• jquery datepicker - retrieve events and show on hover in dialog - allow the a href to be clicked to access individual event entries

  - by paul724

  Please see this jsfiddle - http://jsfiddle.net/paul724/HXb6v/ What is working: The datepicker displays correctly, picks up the css for todays date and on hover. The dialog box follows the mouse On click the dialog box "stops" and displays a link What I want to achieve When a table cell is hovered over the title of the dialog box shows the date e.g "Mon 8th Oct 2012" When a table cell is hovered over the html of the dialog box shows the events for that day in list format (there is code that succesfully retrieves the first row in function getSelectedDates() ) function getSelectedDates() needs to be called in the hover event - showing multiple events for that date in the dialog box I hope that if we can display the date being hovered over in the title of the dialog then we can use the same information to retrieve the rows from the database to populate the html of the dialog for that day

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• Live() keyword not working on load with dynamic html images

  - by Sara Chipps

  I have images being dynamically added to a page, I don't seem to be able to get the 'load' event working dynamically with live(). This is the code I currently have: $('#largeImg' + nextUniqueItemID).hide(); $('#largeImg' + nextUniqueItemID).live('load' , function() { $('#loader' + nextUniqueItemID).hide(); $('#largeImg' + nextUniqueItemID).show(); }); with '#largeImg' + nextUniqueItemID being an image that was added to the page earlier in the function and '#largeImg' + nextUniqueItemID being a loading image. I feel as if I may be misusing "live" as it doesn't really need a listener but to trigger the event immediately.

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• jQuery - Targeting specific ID's

  - by Cecil

  Hey All, I have the following code: <script type="text/javascript" language="javascript"> $(document).ready(function() { $("input:checkbox").click(function(){ var group = "input:checkbox[name='"+$(this).attr("name")+"']"; $(group).attr("checked",false); $(this).attr("checked",true); }); }); </script> How do i get it to target a specific ID rather than every checkbox on the page? i.e if the group of checkboxes im trying to target is #thisgroup Cheers,

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• scrollTop with jQuery

  - by Narcís

  I want a foot to be at the bottom of the page. But when the user makes the window smaller, the two divs come together, it would be better that begins the scroll and hides the foot. I don't know if I explain? I have the code life here: http://jsfiddle.net/mdAsn/ $(function(){ $(document).scroll(function(){ var topDistance = $('#foot').scrollTop(); if(topDistance >= 420){ $('#foot').css({position: 'absolute',bottom:'10px'}); } else{ $('#foot').css({position: 'absolute',top:'410px'}); } }); })

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• Cant append "used" DOMObject in IE

  - by Kein

  I have some objects, that keep created DOMObjects, like here: function category(){ var domBlock; this.block = function(){ if (!domBlock){ // Here dom-object constructor $('<div></div>'); etc } return domBlock; // jquery object, // but i test and native document.createElement } } Then i clear category's area, and append old and new received(with Ajax) objects: area.html(''); for(id in category_list){ area.append( category_list[id].block() ); } where category_list is list that contain category objects. Area is jQuery object. In other browsers (except IE) i get area with all needed categories, but in IE i get only new received categories(that just create DomObject), other old objects that keeped old DomObject not show. I know it possible make with innerHTML, but i wont keep DomObject, not text. Because DomObject keep many events. And it very hard for browser attach events for each DomObject after refresh area.

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• Android how to call a method of MainActivity in SmsReceiver Class

  - by GeneticSmart

  I'm very new to Android Programming, It would be really great if someone can help me in this.My project contains two JAVA files. MainActivity.java extends Activity SMSReceiver.java extends Broadcastreceiver The SMSreceiver.java has the code which displays any incoming SMS in toast. Can you please tell me how to call a function in MainActivity whenever a particular SMS is received. For eg: when I receive sms called as starttemp it should call a function starttemp. I have searched a lot and found that intents are a way to do this and we cannot call these methods directly. Please can anyone help me in this? And it would be really great if someone can send me working code.

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• Python 3: Most efficient way to create a [func(i) for i in range(N)] list comprehension

  - by mejiwa

  Say I have a function func(i) that creates an object for an integer i, and N is some nonnegative integer. Then what's the fastest way to create a list (not a range) equal to this list mylist = [func(i) for i in range(N)] without resorting to advanced methods like creating a function in C? My main concern with the above list comprehension is that I'm not sure if python knows beforehand the length of range(N) to preallocate mylist, and therefore has to incrementally reallocate the list. Is that the case or is python clever enough to allocate mylist to length N first and then compute it's elements? If not, what's the best way to create mylist? Maybe this? mylist = [None]*N for i in range(N): mylist[i] = func(i)

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• gmaps Address Component Types get country name

  - by gmapsuser

  hi .. iam trying to get the country name using the Address Component Types available from gmaps V3. i dont know how i can get it the right way.. http://code.google.com/apis/maps/documentation/javascript/services.html#GeocodingAddressTypes iam trying to alert the country name liks here : alert(results[1].address_component[country]); and here`s the code.. any help is really appreciated..thanks function codeLatLng() { var input = document.getElementById("latlng").value; var latlngStr = input.split(",",2); var lat = parseFloat(latlngStr[0]); var lng = parseFloat(latlngStr[1]); var latlng = new google.maps.LatLng(lat, lng); if (geocoder) { geocoder.geocode({'latLng': latlng}, function(results, status) { if (status == google.maps.GeocoderStatus.OK) { if (results[1]) { alert(results[1].address_component[country]); } else { alert("No results found"); } } else { alert("Geocoder failed due to: " + status); } }); } }

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• prevent linux thread from being interrupted by scheduler

  - by johnnycrash

  How do you tell the thread scheduler in linux to not interrupt your thread for any reason? I am programming in user mode. Does simply locking a mutex acomplish this? I want to prevent other threads in my process from being scheduled when a certain function is executing. They would block and I would be wasting cpu cycles with context switches. I want any thread executing the function to be able to finish executing without interruption even if the threads' timeslice is exceeded.

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• Laravel 4 Aliases in custom classes

  - by Leonel Franchelli

  i want to use the alias classes on laravel 4 "facades" like App::method , Config::method. Well the thing is that i create a custom class and i have to import the namespaces like <?php namespace Face\SocialHandlers; use Illuminate\Support\Facades\App; use Illuminate\Support\Facades\Config; class FacebookHandler implements SocialHandlerInterface { public function registrar($perfil) { Config::get('facebook'); } } is there any way to use those classes like in controllers or routes files of the framework ? like <?php namespace Face\SocialHandlers; //use Illuminate\Support\Facades\App; //use Illuminate\Support\Facades\Config; class FacebookHandler implements SocialHandlerInterface { public function registrar($perfil) { Config::get('facebook'); } } Cya ps: sry for my english

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• Is there a way to access a php class method using javascript through jquery?

  - by Starx

  I have a js script, which is $("#feedbacksubmit").click(function() { if($("#frmfeedback").valid()) { var tname = $("#name").val(); var temail = $("#email").val(); var tphone = $("#phone").val(); var tcontent = $("#content").val(); var tsend = $(this).attr('ts'); $.post ( "bll/index.php", { action: 'mailfeedback', name: tname, email: temail, phone: tphone, content: tcontent, send: tsend }, function(data) { $('.msgbox').html(data); $("#frmfeedback")[0].reset(); }); return false; } }); however, I am trying to see if there is a way to access the class method of bll/index.php directly from the script, instead of posting parameters, to access it

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• Javascript auto calculating with (+) and (-)

  - by Josh

  I need some help finding the error in my javascript calculation. I need to calculate the sum of my input boxes automatically and have my user be able to edit the calculation using + or - buttons. The code I have already does the calculation automatically if you manually enter the numbers, but pressing the + or - does not change the calculation. Here is the code: <html> <head> <script language="javascript"> function Calc(className){ var elements = document.getElementsByClassName(className); var total = 0; for(var i = 0; i < elements.length; ++i){ total += parseInt(elements[i].value); } document.form0.total.value = total; } function addone(field) { field.value = Number(field.value) + 1; } function subtractone(field) { field.value = Number(field.value) - 1; } </script> </head> <body> <form name="form0" id="form0"> 1: <input type="text" name="box1" id="box1" class="add" value="0" onKeyUp="Calc('add')" onChange="updatesum()" onClick="this.focus();this.select();" /> <input type="button" value=" + " onclick="addone(box1);"> <input type="button" value=" - " onclick="subtractone(box1);"> <br /> 2: <input type="text" name="box2" id="box2" class="add" value="0" onKeyUp="Calc('add')" onClick="this.focus();this.select();" /> <input type="button" value=" + " onclick="addone(box2);"> <input type="button" value=" - " onclick="subtractone(box2);"> <br /> 3: <input type="text" name="box3" id="box3" class="add" value="0" onKeyUp="Calc('add')" onClick="this.focus();this.select();" /> <input type="button" value=" + " onclick="addone(box3);"> <input type="button" value=" - " onclick="subtractone(box3);"> <br /> <br /> Total: <input readonly style="border:0px; font-size:14; color:red;" id="total" name="total"> </form> </body></html> Im sure the issue must be small, I just cant put my finger on it.

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• how to get reply from jQuery.get request

  - by BCS

  I have a page that uses the following to submit a AJAX request: function oc() { jQuery.get( "http://somewhere.com:5001/ajax/options/", jQuery('#selectform').serialize(), function(data,statusm,xml){ // I got nothing!!! return; } ); } If I make the request manual from the address bar, things work. And when I make the request from the JS I can see via logging that the server side is working correctly, but in the call back, I can't seem to get the contents of the reply. What am I going wrong?

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• quick sort problem

  - by farka

  I use qsort from C libary and I have datatype Element_type **pElement and Element_type is struct typedef element_type {int ,char ....} example, and i call quicksor function with qsort(*pElement,iCountElement,(size_t)sizeof(Element_type),compare); and callback function static int compare(const void *p1, const void *p2) { Element_type *a1 = (Element_type *)p1; Element_type *a2 = (Element_type *)p2; return ( (a2)->iServiceId < (a1)->iServiceId ); } but I always get segmentation fault. Why?

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• How to use unset() for this Linear Linked List in PHP

  - by Peter

  I'm writing a simple linear linked list implementation in PHP. This is basically just for practice... part of a Project Euler problem. I'm not sure if I should be using unset() to help in garbage collection in order to avoid memory leaks. Should I include an unset() for head and temp in the destructor of LLL? I understand that I'll use unset() to delete nodes when I want, but is unset() necessary for general clean up at any point? Is the memory map freed once the script terminates even if you don't use unset()? I saw this SO question, but I'm still a little unclear. Is the answer that you simply don't have to use unset() to avoid any sort of memory leaks associated with creating references? I'm using PHP 5.. btw. Unsetting references in PHP PHP references tutorial Here is the code - I'm creating references when I create $temp and $this-head at certain points in the LLL class: class Node { public $data; public $next; } class LLL { // The first node private $head; public function __construct() { $this->head = NULL; } public function insertFirst($data) { if (!$this->head) { // Create the head $this->head = new Node; $temp =& $this->head; $temp->data = $data; $temp->next = NULL; } else { // Add a node, and make it the new head. $temp = new Node; $temp->next = $this->head; $temp->data = $data; $this->head =& $temp; } } public function showAll() { echo "The linear linked list:<br/>&nbsp;&nbsp;"; if ($this->head) { $temp =& $this->head; do { echo $temp->data . " "; } while ($temp =& $temp->next); } else { echo "is empty."; } echo "<br/>"; } } Thanks!

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• How to hide/show div using jQuery without altering dimensions?

  - by Byron S

  I have a div that is holding a google chart: <div id="chart_div" style="width: 600px; height: 300px;"></div> It has one CSS property: display: none. On the click of a button, I would like to have the chart be displayed using jQuery hide() and show(). It's working, however, the chart's dimensions are set to something different than I have specified and refuse to change to what I have specified. Here is my jquery code: $(document).ready(function(){ var chart = $('#chart_div'); $('#submit').click(function(){ chart.show('slow'); }); }); Let me know if theres any more code you would like to see. By the way, the chart div is not being contained in anything else so that isn't the problem.

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• jQuery ajax Data Sent to Controller are Empty only in IE

  - by saman gholami

  This is my jQuery code : $.ajax({ url: "/Ajax/GetConcertTime", type: "POST", cache: false, data: { concertID: concertID.replace("ct", ""), date: selectedDateValue }, success: function (dataFromServer) { //some codes ... }, error: function (a, b, c) { alert(c); } }); And this is my controller code for catching parameters : [HttpPost] public ActionResult GetConcertTime(string concertId, string date) { int cid = Convert.ToInt32(concertId); try { MelliConcertEntities db = new MelliConcertEntities(); var lst = (from x in db.Showtimes where x.Concert.ID == cid && x.ShowtimeDate.Equals(date) && x.IsActive == true select x.ShowtimeTime).Distinct().ToList(); JavaScriptSerializer js = new JavaScriptSerializer(); return Content(js.Serialize(lst)); } catch (Exception ex) { return Content(ex.Message); } } After debugging i know the parameters in Controller (concertId and date) are empty when i useing IE browser.but in other browser it's work properly. What should i do for this issue?

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• add navigation buttons with highlight to jQuery Cycle

  - by JJ Nold

  I am currently using jQuery cycle to display featured projects. I currently have the next and prev buttons setup, I also have four rounded buttons in between. I would like them to function as both a link to the corresponding slide as well as add a class to the button who's slide is currently active. I have the nav setup and the active class setup I just need the jQuery. You can see the code at http://jjnold.com/dev in the main slider at the top. I was thinking it's probably something like this to assign the class but I'm not sure how to link to the corresponding slide and have them work together. Any help is greatly appreciated. $('.featuredNavInt a').click(function() { $('.featuredNavInt a').removeClass('active'); $(this).addClass('active'); });

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• How to change the name dynamicaly using jQuery grid

  - by kumar

  I have jQuery grid with user data; my first column is ID: $("#table").click(function(e) { var row = jQuery(e.target).parent(); Name = row.attr("id"); Friends(Name); }); Now when I click on the row I am getting the ID value. I am passing this ID to one function to display it. It always shows the name of the first row - it isn't changing for every row click... Any ideas?

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