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Are unspecified and undefined behavior required to be consistent between compiles?

- by sharptooth

Let's pretend my program contains a specific construct the C++ Standard states to be unspecified behavior. This basically means the implementation has to do something reasonable but is allowed not to document it. But is the implementation required to produce the same behavior every time it compiles a specific construct with unspecified behavior or is it allowed to produce different behavior in different compiles? What about undefined behavior? Let's pretend my program contains a construct that is UB according to the Standard. The implementation is allowed to exhibit any behavior. But can this behavior differ between compiles of the same program on the same compiler with same settings in the same environment? In other words, if I dereference a null pointer on line 78 in file X.cpp and the implementation formats the drive in such case does it mean that it will do the same after the program is recompiled?

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jQuery: set the width of a textarea?

- by AP257

What it says on the tin: how do I set the width of a textarea in jQuery? I want to set the width of a textarea to match the width of a particular image. Using .width() works for setting the width of an image, but not of a textarea. $(document).ready(function() { var width = $("#my_image").width(); $("#another_image").width(width); // works $("#my_textarea").width(width); // fails }); How do I set the width of a textarea?

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JQuery - Find the first identical class after a specific class.

- by WEBProject

Hi guys, lets say I have this divs: <div class="item current"><strong>Example 1</strong></div> <div class="item"><strong>Example 2</strong></div> Im have this code: var News = { init : function(){ $('#news-content') .find('.item:first-child') .addClass('current') .show('slide',{direction:"up"},500); $('#news-content') .find('.item:first-child') .addClass('current') .delay(1000) .hide('slide',{direction:"down"},500); this.show() }, show : function() { // ... } } $(document).ready(News.init) After the init - I want to catch the next "item" after "current" class and make the same operation as "init" on it. how can I do it with jquery?

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session_regenerate_id(true) not work

- by user995789

I use wampserver2.1 php5.3.3, I found session_regenerate_id(true) not work in my script,document says when I set the parameter 'delete_old_sessions' true, there should be a new sid and all the session variables should be deleted, but the fact is after the function, $_session[abc] is still there. did I misunderstand the function,what is my problem? I appreciate if anyone can help me, <?php session_start(); $_SESSION['abc']=12323; session_regenerate_id(true); echo $_SESSION['abc']; ?> I thought it should display none, but it outputs:12323

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jquery: animate function problem

- by Syom

i start learning jquery just yesterday. i have a div element with some content, and i want to hide it by changing it's height: here is the script <script type="text/javascript"> $(document).ready(function(){ $("#hide").click(function(){ $("#cont").animate({ height: '0' },1500); $("#cont").hide(); }); }); </script> <input type="button" value="hide" id="hide"> <div id="cont"> text here... </div> but it doesn't work, becouse it automaticaly sets display:block to #cont element, so after animation it starts to show. when i try to set display:none to #cont element, it doesn't happen. could you help me? thanks

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Display random image when page loads without utilizing onload in the body tag

- by Peachy

I'm trying to create a fairly simple piece of JavaScript that displays a random image from an array each time the page loads. I need to figure out a way to get this running without adding code to the body tag. Is there a way to accomplish this without, say, an onload funtion placed in the body tag? Here's what I have that relies on the onLoad: ImageSwitch=new Array(); ImageSwitch[0]='1.jpg'; ImageSwitch[1]='2.jpg'; ImageSwitch[2]='3.jpg'; ImageSwitch[3]='4.jpg'; function swapImage() { document.getElementById("theImage").setAttribute("src", ImageSwitch[ Math.round(Math.random()*3)]) } Any alternative ideas to accomplish this? Thanks.

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Does specifying image size in CSS allow the browser to do layout before download is complete?

- by eaolson

I've always tried to specify the height and width attributes for img tags in HTML. Not for style reasons, but because the browser then expects the size of the image and can do page layout even before the image has finished downloading. From the HTML spec: The height and width attributes give user agents an idea of the size of an image or object so that they may reserve space for it and continue rendering the document while waiting for the image data. I don't know why this has never occurred to me, but does specifying height and width in CSS, rather than inside the img tag, do the same thing?

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Get an array of forms in java script using prototype

- by Saurabh

My document contains more than one forms. How can I get an array of all forms using prototype? <html> <head></head> <body> <form id="form1">  </form> <form id="form2">  </form> <form id="form3">  </form> </body> </html>

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Cannot get disable button to work.

- by Scarface

Hey guys, quick question, I have this javascript/jquery function that basically wraps an input in image brackets, and the first part of the function works, but the button does not disable after and I cannot figure out why (last line does not work). If anyone has an idea, let me know. Thanks in advance. <input id="2image" type="button" value="Attach" onclick="imageid('message')"> <script> function imageid(input) { var obj=document.getElementById(input); obj.value+="[image]image[/image]"; $("#2image").attr({ disabled:true, value:"Inserted" }); } </script>

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How to validate the radio button and checkbox?

- by xasjaiod123

For radio button: $(document).ready(function() { $('#select-number').click(function() { if ($('input:radio', this).is(':checked')) { return true; } else { alert('Please select something!'); return false; } }); }); It is working fine when no radio button is selected. But When I select the radio button and submit the form Then also it is giving me the alert message 'Please select something!' Is there any good tutorials available for validation using Jquery for newbie.

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Can I improve my validation?

- by Qmal

So I want to validate my form using jQuery, this is how I imagine it and it works, but is the best method of doing it and maybe I can do it more effective with less code? <script type="text/javascript"> $(document).ready(function() { $("#frmCatAdd").submit(function() { var name = $("#edtName").val(); if (name == "") $("#edtName").css("border", "1px solid red") else $("#frmCatAdd").submit(); return false; }); }); </script>

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jQuery if condition text contains

- by olo

I wrote a simple if condition, but not quite working. if text is 123 change to hi, if text is 456 change it to hi2 Could someone please give me a hand. <h1>123</h1> <h1>456</h1> <h1>789</h1>? $(document).ready(function() { var changeText1 = '123'; var changeText2 = '456'; var text = $(h1).text(); if (text == changeText) { $(this).text('hi'); } else if (text == changeText2 ) { $(this).text('hi2'); } }); ? http://jsfiddle.net/8P2ma/

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Fancybox2 Inline Content Gallery

- by beefchimi

I am trying to create a gallery of inline content with Fancybox 2, and am failing miserably. I checked out some other resources online and they seem to indicate doing this relatively easily, yet, I cannot seem to get it to work. Here is my fiddle: http://jsfiddle.net/beefchimi/jtxHd/2/ Now, I feel like the fiddle is not loading the resources, so thats a problem. But even with the resources this does not work, I get the fancybox error. Resources: http://fancyapps.com/fancybox/source/jquery.fancybox.pack.js?v=2.1.3 http://fancyapps.com/fancybox/source/jquery.fancybox.css?v=2.1.3 Any help would be greatly appreciated. EDIT: So I can't submit my question without including some code, because linking to jsfiddle isn't okay, so, here is my fancybox initialization, which you will also find in the jsfiddle: $(document).ready(function() { $('a.inlinepopup').fancybox({ 'width' : '75%', 'height' : '75%', 'autoScale' : false, 'type' : 'iframe' }); });

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How to perform .select() on jQuery masked text input

- by dllhell

I'm using http://digitalbush.com/projects/masked-input-plugin/ plugin. There is an input text with defined mask: <input type="text" id="txtMyInput" class="FocusSense"/> and a script: $(document).ready(function () { jQuery(function ($) { $("#txtMyInput").mask("?9.99"); }); $(".FocusSense").focus(function () { this.select(); }); }) As you can see, I would like select all in txtMyInput on focus but but alas! On focus, mask appears and loose .select(). What should I do to preserve mask and .select()?

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Why is it not displaying

- by Doug

My fieldset doesn't display onclick, what am I doing wrong? $(document).ready(function(){ $('#More').toggle( function() { $('#search', this).slideDown(); }, function() { $('#search', this).slideUp(); }); }); <div> Item 1 <a href="#" id="More">Item 2</a> Item 3 <fieldset id="search" style="display: none;"> <form> <input type="text"> </form> </fieldset> </div>

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jQuery find not working

- by fire

This is my HTML: <p class="first">blah blah <a href="" class="more">read more</a></p> <div class="read_more"> <p>more text</p> </div> And javascript: $(document).ready(function(){ $('a.more').click(function(){ $(this).find('.read_more').slideDown(); return false; }); }); Doesn't seem to do anything (read_more is set to display: none) any ideas?

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Android HTTP get methods

- by Nick

I have written a number of applications for blackberry and am just starting in Android. It seems to me that android has a lot more built in functions. I am starting by recreating some of my BB apps on Android and on one I take a few xml sites and parse them out. On blackberry I implemented this by creating a class that extended a thread. I would construct a new instance of this class with the parameters of my http request and it would call a function back in my main class, sending it the results. I am tempted to reuse my code, but am curious if android has something better built in. I have been looking at the handler class as well as possible using a service. Bascially, I would like to start a new thread that will return a document of a specific url. Thanks!

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Creating problem-sets with answers in Latex

- by ARV

Hello everyone. I want to typeset Mathematical problem-sets in Latex. My requirements are as follows: When I type them in, I want the questions and the answers to be next to each other in the source-code so that fixing errors, etc. can be done easily. However, when the document is typeset, I want the answers to appear in a separate "Answers" section just the way they do in textbooks. Does anyone know of a way to do this? Many thanks in advance!

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Javascript opens new window despite no call

- by Jimmy

I have a javascript that opens a new window for "PreChecking" a site. The problem is when i click the button, it works fine... but wichever i button i press next makes the method fire again, despite i doesn't call it. Its just the button with id "lnkPrecheck" that should call the method. Have searched far and wide for a slolution that just opens a new window for the lnkPrecheck button, not the others on the site. THere must be a way for only 1 of 3 buttons makes the function call, not all of them! The code: <asp:Button OnClick="lnkPrecheck_Click" OnClientClick="NewWindow();" ID="lnkPrecheck" runat="server" text="Precheck (Opens in a new window)" /> function NewWindow() { document.forms[0].target = "_blank"; }

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javascript regular expressions

- by Zhasulan Berdybekov

Help me with regular expressions. I need to check the text on the hour and minute. That is the first case, the text can be from 0 to 12. In the second case, the text can be from 1 to 60. this is my code: var hourRegEx = /^([0-9]{2})$/; //You can fix this line of code? $(document).ready( function(){ $('form.form').submit(function(){ if( $('input.hour').val().match(hourRegEx) ){ return true; } return false; }); }); In my case, the code says that, for example 52, too, the correct answer

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prefix + and - to divs using jquery.

- by pradeep

i have jquery accordion script like this.. <script type='text/javascript'> $(document).ready(function() { $('div.Syb> div').hide(); $('div.Syb> h4').click(function() { $(this).next('div').slideToggle('fast') .siblings('div:visible').slideUp('fast'); }); }); </script> i need to show + and - symbol before the div ..to show that its expanded and collapsed.. how do i do it.?

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How to clear a textbox based on a checkbox using Javascript

- by LoftyWofty

I am trying to code in javascript (to avoid validation triggers at the server) to clear a text box if the checkbox associated with it is unchecked. I have this code ... <input type="checkbox" id="chkOTHER" onclick="document.getElementById('txtOtherFlag').value='';" /> <asp:TextBox ID="txtOtherFlag" runat="server" AutoPostBack="True" CausesValidation="True" ValidationGroup="ValidationGroup1"></asp:TextBox> The problem is the Javascript inside the checkbox is not triggering to remove the value in the text box. Even if this worked, it's incorrect as it would blank out the text box every time the checkbox is triggered whether it is checked or not. I need to resolve this in the client side only. Thank you

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When parsing XML with jquery, how can we pass the current node from within each() to another functio

- by Johusa

Say we have an XML document with many book nodes... When parsing XML with jquery, how can i pass the current node from each() iteration to another function that will do some stuff until something is reached and then go back to the previous function (passing along the current node from this function back to the first function)? Here something more descriptive (this is just an example out of my head, not accurate): function MyParser(x1,x2,dom) { // if i am called by anotherFunction(thisNode) proceed from the passed node dom.find('book').each(function() { var Letter = thisNode.find(author).charAt(0); if(x1 == Letter) { // print everything till the next letter (x2) anotherFunction(thisNode) } } } function anotherFunction(x2,thisNode) { //continue parsing here until you reached x2 //when x2 is reached, return to previous function passing again the current node }

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jQuery scrollTop - animation stucks at the end of moving

- by mobsteady

i use jquery the scrollTop function to get my scrolling smooth while switching between different anchors. first, here is the url the problem this is my jquery script "ziel" is just the german word for "target", just to let you know why this variable is called "ziel" $(document).ready(function() { $('a[href*=#]').bind("click", function(event) { event.preventDefault(); var ziel = $(this).attr("href"); $('#portraitcontent').animate({ scrollTop: $(ziel).offset().top }, 3000 , function (){location.hash = ziel;}); }); return false; }); so how do i get a smooth scrolling without that ugly jumping at the end of the animation? any ideas? i really don't know what to do. spending hours with that bitch! thanks for your advices!

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Toggeling between image

- by Binaryrespawn

Hi all, I have two images with which I am using in an anchor tag. I am using jquery toggle on the click event of the anchor tag to swap between images. $(document).ready(function(){ $('#registrationForm').hide(); $('#callform').append("<a id='formlink'>IMAGE 1</a>"); $("#formlink").click(function(){ $('#registrationForm').toggle(function(){ $('#formlink').empty().append(IMAGE 2); }); }); }); This works fine the first time around, however i want to toggle between the two images whenever the other is clicked. Any ideas ?

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