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  • how to solve this jquery problem

    - by From.ME.to.YOU
    Hello i have 2 divs above each others, at a given moment one is shown and the other is hidden, the script should display #div2 when the mouse enters #div1 and should show #div1 when the mouse leaves #div2 the problem comes when the mouse enters #div1 and leaves before #div2 is displayed so the #div2 will stay displayed but the mouse has left #div2 already any help ? my jqurey code $('#div1').mouseenter(function(){ $('#div1').fadeOut("fast",function(){ $('#div2').fadeIn("fast"); }); }); $('#div2').mouseleave(function(){ $('#div2').fadeOut("fast",function(){ $('#div1').fadeIn("fast"); }); });

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  • How to avoid circular reference when excel cell update

    - by Nimo
    Hi, I'm writing a set of functions in c++ which can be called by excel. However, these functions are asynchronous, therefore no immediate return values available. Once a result is available I used a callback function through VBA which update the result to the relevant cell which called the functions. But, here I'm having circular function calling problem, because when I update the cell. excel automatically call the original function once again. Please help me to get around this problem Thank You

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  • jquery UI slider not working in Safari.

    - by Joe
    so i have the below code, which I think is fine: jQuery( function() { jQuery("#slider-vertical").slider( { orientation :"vertical", range :"min", min :0, max :100, value :50, slide : function(event, ui) { jQuery("#amount").val(ui.value); var movie = thisMovie('ClusterFlash'); fromScroll = jQuery("#amount").val(); if (movie) { currentSentiment = ((100 - fromScroll) / 100); movie.sentimentChange(currentSentiment); } } }); }); the 'movie' var above calls the following function, which seems to be where my problem is. function thisMovie(movieName) { if (navigator.appName.indexOf("Microsoft") != -1) { return window[movieName]; } if(document[movieName].length != undefined) { return document[movieName][1]; } return document[movieName]; } Any help would be appreciated. Thank

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  • Performance of vector::size() : is it as fast as reading a variable?

    - by zoli2k
    I have do an extensive calculation on a big vector of integers. The vector size is not changed during the calculation. The size of the vector is frequently accessed by the code. What is faster in general: using the vector::size() function or using helper constant vectorSize storing the size of the vector? I know that compilers usually able to inline the size() function when setting the proper compiler flags, however, making a function inline is something that a compiler may do but can not be forced.

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  • How to change jQuery toggle() status

    - by Zier Gofren Schlanum
    Using toogle to show/hide the div, I've got a problem that when I hide my div with anothor function, I have to click twice on the button to perform correct action. Is there any way change the toggle switch like I clicked the button? $('#add_task').toggle(function() { if ($("#new_task_status").attr("value")==0) { $("#new_task").slideDown(); $("#new_task_status").attr("value", "1"); } }, function() { if ($("#new_task_status").attr("value")==1) { $("#new_task").slideUp(); $("#new_task_status").attr("value", "0"); } }); $('nav').click(function() { if ($("#new_task_status").attr("value")==1) { $("#new_task_status").attr("value", "0"); $("#new_task").slideUp(); } });

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  • Converting C# class to JavaScript

    - by AgileMeansDoAsLittleAsPossible
    Take a look at this basic class: namespace AcmeWeb { public string FirstName { get; set; } public class Person { public Person(string firstName, string lastName) { if (String.IsNullOrEmpty(firstName)) { throw new ArgumentNullException(firstName); } this.FirstName = firstName; } } } What's the best translation of this into JavaScript? This is what I'm thinking: (function(namespace) { namespace.Person = function(firstName, lastName) { // Constructor (function() { if (!firstName) { throw "'firstName' argument cannot be null or empty"; } })(); // Private memberts var _ = { firstName: firstName }; // Public members this.firstName = function(value) { if (typeof(value) === "undefined") { return _.firstName; } else { _.firstName = value; return this; } }; }; })(AcmeWeb);

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  • Accessing "pseudo-globals" by their name as a string

    - by rob
    I am now in the process of removing most globals from my code by enclosing everything in a function, turning the globals into "pseudo globals," that are all accessible from anywhere inside that function block. (function(){ var g = 1; var func f1 = function () { alert (g); } var func f2= function () { f1(); } })(); (technically this is only for my "release version", where I append all my files together into a single file and surround them with the above....my dev version still has typically one global per js file) This all works great except for one thing...there is one important place where I need to access some of these "globals" by string name. Previously, I could have done this: var name = "g"; alert (window[name]); and it did the same as alert(g); Now -- from inside the block -- I would like to do the same, on my pseudo-globals. But I can't, since they are no longer members of any parent object ("window"), even though are in scope. Any way to access them by string? Thanks...

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  • jquery elements by class

    - by tom
    Hi there im trying to get all dropdown lists by class and change their names, my code is not working, is there something i am missing? $(document).ready(function () { $('.mutuallyexclusive').live("click", function () { checkedState = $(this).attr('checked'); $('.mutuallyexclusive:checked').each(function () { $(this).attr('checked', false); $(this).attr('name', 'chk'); }); $(this).attr('checked', checkedState); if (checkedState) { var prev = $(this).prev('select').attr("name", 'cat.parent_id'); elements = $('select.selected'); elements.each(function () { $(this).attr("name", "bbb"); }); } else { var prev = $(this).prev('select').attr("name", 'dd'); } }); });

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  • Having trouble with Flash, Javascript and JQuery

    - by andypants
    I'm using JQuery with the JQuery flash plugin (http://jquery.lukelutman.com/plugins/flash/) and trying to send a JS call back to the flash, I keep running into "xxx is not a function" so apparently something is off. I'm new to JQuery and very new to this jquery flash plugin and just can't quite wrap my head around what I am doing wrong. Here's where I'm lading up the flash: <div id="tagimgback"> <script language="javascript"> $(document).ready(function(){ $('#tagflash').flash( { src: 'tagflash', width: 200, height: 200, flashvars: {theYear:'2010',theTagNumber:'123'} }, { version: 8 } ); }); </script> </div> And here's where I'm trying to call it: $("#tagflash").gotoNewFrame(theTagNumber); gotoNewFrame is an AS function within my flash. I know the function works as I've been able to test it prior to bringing jQuery into the mix.

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  • jquery draggable throws error when 'mouseup' is triggered

    - by Moustard
    If you build a simple dragger: $(document).ready( function() { $('#tomove').draggable( { axis: 'x', drag: function(event, ui) { mouseUp(); } }); } ); And you try to stop it programmatically: function mouseUp() { if($('#tomove').offset().left 400) { $('#tomove').trigger('mouseup'); } } You will get this message in error console: this.helper is null Is there any way to fix this? Thanks for your help.

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  • Getting url of images given a word in PHP

    - by DomingoSL
    Hello, im developing a program who change his background image in function of the trending topics of twitter. So i have a function who return me a word (first TT on twitter), then i need another function that give me a url of an image relative to that word, like google images when you search or flickr. Do you know how to do this? or even better, do you have a php script made?

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  • Difficulty with jQuery and input keydown event

    - by Rosarch
    I am making a simple JavaScript enhanced list. I want it to be a list of inputs, each with an 'Add' and 'Remove' button. If the user clicks 'Add', a new li will be added. If the user clicks 'Remove', that li will be removed. It works fine, except for hitting "enter" in an <input>. Currently, it always causes the Remove.click event handler to fire, unless there's only one item in the list. I'm not sure why. How can I suppress this? Here is the complete jQuery. My attempt to fix the "enter" issue is commented out, and it doesn't work. I suspect that I could be designing this code better; if you see an improvement I'd love to hear it. function make_smart_list(list) { var ADD_CLASS = 'foo-widget-Add'; var REMOVE_CLASS = 'foo-widget-Remove'; var jq_list = $(list); jq_list.parents('form').submit(function() { return false; }); function refresh_handlers() { jq_list.find(sprintf('.%s, .%s', REMOVE_CLASS, ADD_CLASS)).unbind('click'); // jq_list.find('input').unbind('submit'); // // jq_list.find('input').submit(function() { // var jq_this = $(this); // var next_button = jq_this.nextAll('button'); // if (next_button.hasClass(ADD_CLASS)) { // next_button.nextAll('button').click(); // return; // } // // if (next_button.hasClass(REMOVE_CLASS)) { // return false; // } // // }); jq_list.find("." + REMOVE_CLASS).click(function() { var jq_this = $(this); jq_this.parent().remove(); refresh_handlers(); return false; }); jq_list.find("." + ADD_CLASS).click(function() { var jq_this = $(this); if (jq_this.prevAll('input').val() == '') { return; } jq_this.parent().clone().appendTo(jq_this.parent().parent()); jq_this.parent().next().find('input').val('').focus(); jq_this.removeClass(ADD_CLASS).addClass(REMOVE_CLASS); jq_this.text('Remove'); refresh_handlers(); return false; }); } refresh_handlers(); } (sprintf is another script I have.)

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  • What are the differences in performance between synchronous and asynchronous JavaScript script loading?

    - by jasdeepkhalsa
    My question is simply: what are the differences in performance between synchronous and asynchronous JavaScript script loading? From what I've gathered synchronous code blocks the loading of a page and/or rest of the code from executing. This happens at two levels. First, at the level of the script actually loading, and secondly, within the JavaScript code itself. For example, on the page: Synchronous: <script src="demo_async.js" type="text/javascript"></script> Asynchronous: <script async src="demo_async.js" type="text/javascript"></script> And within a script: Synchronous: function a() {alert("a"); function b() {alert("b");}} Asynchronous (and self-executing): (function(a, function(b){ alert(b); }) { alert(a); }))(); So what really is the difference in performance from using these different loading methods and JavaScript patterns?

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  • Having an issue wit mouseup event

    - by user3680715
    Hello everyone I have this code working fine but I want the script to stop on the mouse up event. Here is an example of what I have now. How can I stop the script on mouse up event so that it looks like it only shows the coordinates when dragging over the image. Thank you! http://jsfiddle.net/Hc7x4/20/ $(document).ready(function () { $("#map-catcher").mousedown(function (e) { $("#map-catcher").mousemove(function (e) { $("#coord").text("x:"+e.offsetX+", y:"+e.offsetY); return; }); $("#map-catcher").mouseup(function (e) { return; }); }); });

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  • function_exists php

    - by user527800
    Hi all I'm trying to write a function that could receive it's second arg a name of a function. In order to validate function's name (that will be used in an eval statement) I use function_exists such as: if(function_exists($type)){ $toEval= $type.'(\''.$file.'\');'; }else{ But if the arg sent is include or require (with 'once' variations) this code fails (function_exists returns false). How could this be fixed? Thanks, Alex

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  • base pointer to derived class

    - by Jay
    Suppose there are Base class and Derived class. Base *A = new Base; Here A is a pointer point to Base class, and new constructs one that A points to. I also saw Base *B = new Derived; How to explain this? B is a pointer to Base Class, and a Derived class constructed and pointed by B? If there is a function derived from Base class, say, Virtual void f(), and it's been overridden in Derived class, then B->f() will invoke which version of the function? version in Base class, or version that overridden in Derived Class. What if there is a new function void g()in Derived, is B->g() going to invoke this function properly? One more is, is int *a = new double; or int *a = new int; legal?

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  • Should I implement IDisposable here?

    - by dotnetdev
    My method which calls SQL Server returns a datareader but because of what I need to do (return the datareader to the calling method which is in page code-behind), I can't close the connection in the class of the method which calls sql server, so I have no finally or using blocks. Is the correct way of disposing resources to make the class implement IDisposable? Or from the caller, explicitly dispose the unmanged resource (class-level fields)? Thanks

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  • how to get the content of iframe in a php variable? [closed]

    - by Sahil
    My code is somewhat like this: <?php if($_REQUEST['post']) { $title=$_REQUEST['title']; $body=$_REQUEST['body']; echo $title.$body; } ?> <script type="text/javascript" src="texteditor.js"> </script> <form action="" method="post"> Title: <input type="text" name="title"/><br> <a id="bold" class="font-bold"> B </a> <a id="italic" class="italic"> I </a> Post: <iframe id="textEditor" name="body"></iframe> <input type="submit" name="post" value="Post" /> </form> the texteditor.js file code is: $(document).ready(function(){ document.getElementById('textEditor').contentWindow.document.designMode="on"; document.getElementById('textEditor').contentWindow.document.close(); $("#bold").click(function(){ if($(this).hasClass("selected")) { $(this).removeClass("selected"); }else { $(this).addClass("selected"); } boldIt(); }); $("#italic").click(function(){ if($(this).hasClass("selected")) { $(this).removeClass("selected"); }else { $(this).addClass("selected"); } ItalicIt(); }); }); function boldIt(){ var edit = document.getElementById("textEditor").contentWindow; edit.focus(); edit.document.execCommand("bold", false, ""); edit.focus(); } function ItalicIt(){ var edit = document.getElementById("textEditor").contentWindow; edit.focus(); edit.document.execCommand("italic", false, ""); edit.focus(); } function post(){ var iframe = document.getElementById("body").contentWindow; } actualy i want to fetch data from this texteditor (which is created using iframe and javascript) and store it in some other place. i'm not able to fetch the content that is entered in the editor (i.e. iframe here). please help me out of this....

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  • closure not working

    - by dorelal
    var Dog = function() { var _instance = 'hello world'; return function() { console.log(this._instance); } } (); //note that it is self invoking function var l = new Dog(); //#> undefined In the above case I was expecting output of 'hello world'. Why this._instance is not accessing the the varible which should be accessible by virtue of closure. I tested this in FF and am getting undefined.

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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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  • Is this a safe way to reference objects in JavaScript?

    - by John
    If I were to define two objects myDataStore and myDrawer something like this: var myDataStore = function(myObjectRef) { this.myInternalObject = myObjectRef; }; var myDrawer = function(myObjRef) { this.myInternalObject = myObjectRef; }; And if I were to create an object like so: (function(){ var myObject = window.myObject = function(){ this.dataStore = new myDataStore(this); this.drawer = new myDrawer(this); } })(); Then myObject.dataStore.myInternalObject, and myObject.drawer.myInternalObject, would simply be pointers back to the original 'myObject' - not taking up any additional memory in the browser. Yes? I am interested in implementing techniques like this - as it makes it easy for objects to communicate with each other.

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  • Python - How can I make this code asynchronous?

    - by dave
    Here's some code that illustrates my problem: def blocking1(): while True: yield 'first blocking function example' def blocking2(): while True: yield 'second blocking function example' for i in blocking1(): print 'this will be shown' for i in blocking2(): print 'this will not be shown' I have two functions which contain while True loops. These will yield data which I will then log somewhere (most likely, to an sqlite database). I've been playing around with threading and have gotten it working. However, I don't really like it... What I would like to do is make my blocking functions asynchronous. Something like: def blocking1(callback): while True: callback('first blocking function example') def blocking2(callback): while True: callback('second blocking function example') def log(data): print data blocking1(log) blocking2(log) How can I achieve this in Python? I've seen the standard library comes with asyncore and the big name in this game is Twisted but both of these seem to be used for socket IO. How can I async my non-socket related, blocking functions?

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  • Check for changes with jquery and a database

    - by Steve
    I am doing a notification system. When a new post is published, users will be notified immediately by an small notification on the screen. I am currently using this: setInterval(function(){ checkForChanges(); }, 2*1000); function checkForChanges(){ $.post("http://"+ document.domain + "/posts/checkForChanges/", function(dat){ if(dat>0){ .... /*create notification*/ } }); } And i was wondering if this is the correct way to do it or not. Because, this is calling a PHP function every 2 seconds and making a query to the database. In case there are no new changes, it won't do anything... Thanks.

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  • If item not in the lst in scheme

    - by ms. sakura
    I'm working on context-free grammars, and I have a function that returns the (terminal values of grammar) for example: i have non-terminal function that results in (A B) , from calling say ((A cat) (B happy np) (A B sad)) so technically A and B are non terminals of the grammar. Now I want to be able to get the terminals (cat happy np sad) (define terminals (lambda (lsts) (cond ((null? lsts) lsts) ((not(member? (car(car lsts)) (n-terminals lsts))) (cons (car(car lsts)) (terminals (car (cdr lsts))))) (else (terminals (cdr lsts)))))) PS: functionality of n-terminals is described above. member? is a boolean function that returns true if an item is a member of the list, false otherwise. My function returns an empty lst. What am I missing here?

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