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  • JavaScript: input validation in the keydown event

    - by c411
    Hi, I'm attempting to do info validation against user text input in the process of keydown event. The reason that I am trying to validate in the keydown event is because I do not want to display the characters those that are considered to be illegal in the input box at the beginning. The validation I am writing is like this, function validateUserInput(){ var code = this.event.keyCode; if ((code<48||code>57) // numerical &&code!==46 //delete &&code!==8 //back space &&code!==37 // <- arrow &&code!==39) // -> arrow { this.event.preventDefault(); } } I can keep going like this, however I am seeing drawbacks on this implmentation. Those are, for example, Conditional statement become longer and longer when I put more conditions to be examined. keyCodes can be different by browsers. I have to not only check what is not legal but also have to check what are exceptionals. In above examples, delete,backspace, and arrow keys are exceptionals. But the feature that I don't want to lose is having not to display the input in the textarea unless it passes the validation. (In case the user try to put illegal characters in the textarea, nothing should appear at all) That is why I am not doing validation upon keyup event. So my question is, Are there better ways to validate input in keydown event than checking keyCode by keyCode? Are there other ways to capture the user inputs other than keydown event before browser displays it? And a way to put the validation on it? Thanks for the help in advance.

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  • Javascript tabs: call event onclick

    - by Joris
    I got some code I need to change. it is build by others, and not very neat... There is a javascript tabcontrol, containing 4 tabs, which contains gridviews. All the 4 gridviews are build during the load of the page, but I want them to load, when you activate the tabs (as it is possible to watch the side, while you don't need the specific gridviews to see) So, my question is: how to call an event (that loads the gridview) from an javascript tab? how the tabs are generated: (generated code, I know, horrible) var obj = 0; var oid = 0; var otb = 0; var myTabs = new Array(); var myTabitems = new Array(); var myTabitem = new Array(); var myTabContent = new Array(); var myLists = new Array(); function showTabContent(tab) { tb = tab.obj; id = tab.nr; if (myTabs[tb].oid != -1) { myTabs[tb].myTabContent[myTabs[tb].oid].style.display = 'none'; myTabs[tb].myTabitem[myTabs[tb].oid].className -= " active"; } myTabs[tb].myTabContent[id].style.display = 'block'; myTabs[tb].myTabitem[id].className += " active"; myTabs[tb].oid = id; } function boTabs() { var myBlocks = new Array(); myBlocks = document.getElementsByTagName("div"); var stopit = myBlocks.length; for (var g = 0; g < stopit; g++) { if (myBlocks[g].className == "tabs") { myTabs.push(myBlocks[g]); } } var stopit2 = myTabs.length; for (var i = 0; i < stopit2; i++) { myTabs[i].myLists = myTabs[i].getElementsByTagName("ul"); if (myTabs[i].myLists[0].className == "tabs") { myTabs[i].myTabitems = myTabs[i].myLists[0].getElementsByTagName("li"); } var stopit3 = myTabs[i].myTabitems.length; myTabs[i].obj = i; myTabs[i].myTabitem = new Array(); myTabs[i].myTabContent = new Array(); for (var j = 0; j < stopit3; j++) { myTabs[i].myTabitem.push(myTabs[i].myTabitems[j]); myTabs[i].myTabitem[j].nr = j; myTabs[i].myTabitem[j].obj = i; myTabs[i].myTabitem[j].onclick = function() { showTabContent(this); }; } var myTabDivs = myTabs[i].getElementsByTagName("div"); for (var j = 0; j < myTabDivs.length; j++) { if (myTabDivs[j].className == "tabcontent") { myTabs[i].myTabContent.push(myTabDivs[j]); } } myTabs[i].myTabitem[0].className += " active"; myTabs[i].myTabContent[0].style.display = 'block'; myTabs[i].oid = 0; myTabDivs = null; } myBlocks = null; } onload = boTabs;

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  • Event Listner in php

    - by isurulucky
    Hi, I want my web server to notify me through a php page when an event occurs at a another TCP server, to which the php page has successfully connected via a socket. The event is like the TCP server want to send a message to the web server, etc. Is there any way to accomplish this and/or any references on how to do it??? Thank You!!

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  • javascript textbox call event when value changes

    - by Senica Gonzalez
    I have a textbox, and whenever the value of the box changes, I want to check and see if 20 digits have been entered. I thought that I would use the onChange event, but this seems to be interpreted as the onBlur event on IE. So then I thought I would use onKeyDown, but the problem comes in if the user wants to paste a value into the field, then the function never gets called. There are no other form boxes so I can't rely on onBlur or expect that they will change focus ever. How do I do this? I just want to evaluate the value of the textbox everytime the value of the textbox changes. <input type="text" onKeyDown="myfunction()">

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  • Buttons OnClick Event not firing when it causes a textboxes onChange event to fire first

    - by user48408
    I have a few textboxes and button to save their values on a webpage. The onchange event of the textboxes fires some js which adds the changed text to a js array. The ok button when clicked flushes this to the database via a webservice. This works fine except when the onchange event is caused by clicking the ok button. In this scenario the onchange of the textboxes still fires but the onClick event of the button does not. Any ideas? textboxes look something like <input name="ctrlJPView$tbcTabContainer$Details$JP_Details_Address2Text" type="text" value="test" id="ctrlJPView_tbcTabContainer_Details_JP_Details_Address2Text" onchange="addSaveDetails('Jobs###' + document.getElementById('ctrlJPView_tbcTabContainer_Details_JP_Details_Address2Text').value + ');" style="font-size:8pt;Left:110px;Top:29px;Width:420px;Height:13px;Position:absolute;" /> My save button <input type="button" name="ctrlJPView$btnOk" value="OK" onclick="saveAmendments();refreshJobGrids();return false;__doPostBack('ctrlJPView$btnOk','')" id="ctrlJPView_btnOk" class="ControlText" style="width:60px;" /> UPDATE: I guess this comes down to one of two things. 1) Something is happening before the onClick of the button gets called to surpress that call such as an inadvertent return false; or 2) the onClick event isn't firing at all. Now I've rem'd out everything actually inside the functions that are being called beforehand but the problem persists. But if i remove the call altogether it works (???)

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  • Preventing focus on next form element after showing alert using JQuery

    - by digitalsanctum
    I have some text inputs which I'm validating when a user tabs to the next one. I would like the focus to stay on a problematic input after showing an alert. I can't seem to nail down the correct syntax to have JQuery do this. Instead the following code shows the alert then focuses on the next text input. How can I prevent tabbing to the next element after showing an alert? $('input.IosOverrideTextBox').bind({ blur: function(e) { var val = $(this).val(); if (val.length == 0) return; var pval = parseTicks(val); if (isNaN(pval) || pval == 0.0) { alert("Invalid override: " + val); return false; } }, focus: function() { $(this).select(); } });

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  • UIControlEventTouchDragExit only fires ~100 pixels out

    - by Jonathan
    Im trying to "get" when a finger/touch leaves a UIButton in objective C for iphone. I was told in another answer to use UIControlEventTouchDragExit however this event only fires when the touch gets about 100 pixels away from the button, whereas I would like it to be immediate. The apple docs say that goes according to the bounds however my understand is the bounds and the frame are the same unless you rotate the UIbutton (or whatever)

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  • Page Loading Screen in PHP

    - by Palani
    Hi all, I am working on a Php page which loads more images,so I want to show the User as the Page is currently Loading. I have tried but it does not working correctly. The loading image should be run until all image gets load.How to implement for this?

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  • Detecting a image 404 in javascript.

    - by xal
    After a user uploads a file we have to do some additional processing with the images such as resizing and upload to S3. This can take up to 10 extra seconds. Obviously we do this in a background. However, we want to show the user the result page immediately and simply show spinners in place until the images arrive in their permanent home on s3. I'm looking for a way to detect that a certain image failed to load correctly (404) in a cross browser way. If that happens, we want to use JS to show a spinner in it's place and reload the image every few seconds until it can be successfully loaded from s3.

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  • Dynamic Jquery Accordion

    - by kwek-kwek
    How do I default an accordion to be closed on start-up. here is the sample view here Here is the code: <script> $(function() { $("#accordion").tabs("#accordion div.pane", {tabs: 'h3', effect: 'slide'}); }); </script> <script> // add new effect to the tabs $.tools.tabs.addEffect("slide", function(i, done) { // 1. upon hiding, the active pane has a ruby background color this.getPanes().slideUp("slow").css({backgroundColor: "#fff"}); // 2. after a pane is revealed, its background is set to its original color (transparent) this.getPanes().eq(i).slideDown("slow", function() { $(this).css({backgroundColor: 'transparent'}); // the supplied callback must be called after the effect has finished its job done.call(); }); }); </script>

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  • click event not trigerred in IE

    - by ZX12R
    I am trying to trigger a click event for a button from jquery. it works very well in FF but IE(all versions) seem to ignore it. this is what i have tried so far.. $('#uxcSubmit').trigger('click'); then tried this.. $('#uxcSubmit').click(); then even tried this to check if it is a problem of jquery.. document.getElementById('uxcSubmit').click(); nothing seems to help IE.. thanks in advance..

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  • detect focus on browser address bar?

    - by jedierikb
    Is there a way to detect when focus has been put onto the address-bar or the browser-search-bar? I ask because I am trying to keep focus on one element in my document, but adding a blur() listener to that element works too well in safari mac -- you can't put focus on the address-bar!

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  • add remove field in java script

    - by rajanikant
    Hi every body. i want to add and remove some html input in javascript i have done for add function . it work properly. but unable to remove. my code is following fields = 1; function addInput() { if (fields != 10) { document.getElementById('text').innerHTML += "<tr><td width='15%' align='left' valign='top' class='subheading'><input type='text' name='date[]' id='date[]' /></td><td width='15%' align='left' valign='top' class='subheading'><input type='text' name='time[]' id='time[]' /></td><td width='20%' align='left' valign='top' class='subheading'><input type='text' name='module[]' id='module[]' /></td><td width='15%' align='left' valign='top' class='subheading'><input type='text' name='organisation[]' id='organisation[]' /></td><td width='20%' align='left' valign='top' class='subheading' nowrap='nowrap'><input type='text' name='category[]' id='category[]' /></td><td width='20%' align='left' valign='top' class='text' nowrap='nowrap'>Add | Remove </td></tr>"; fields += 1; } else { document.getElementById('text').innerHTML += "<br />Only 10 upload fields allowed."; document.form.add.disabled=true; } } fields1=10 function removeInput() { if (fields1 !=1) { document.getElementById('text').innerHTML += ""; fields -= 1; } } and my php function is function addSession() {?> <table cellpadding="5" cellspacing="0" width="100%"> <tr> <td width="10%" align="left" valign="top" colspan="6" bgcolor="#993333" class="heading">Add Session </span></td> </tr><tr class="bgrow"> <td width="10%" align="left" valign="top" class="subheading">Datum </span></td> <td width="20%" align="left" valign="top" class="subheading">Tijd</td> <td width="35%" align="left" valign="top" class="subheading">Module</td> <td width="15%" align="left" valign="top" class="subheading">Organisatie</td> <td width="20%" align="left" valign="top" class="subheading" nowrap="nowrap">Category</td> <td width="20%" align="left" valign="top" class="subheading" nowrap="nowrap">Action</td> </tr> <tr > <td width="15%" align="left" valign="top" class="subheading"><input type="text" name="date_0" id="date_0" /></td> <td width="15%" align="left" valign="top" class="subheading"><input type="text" name="time_0" id="time_0" /></td> <td width="20%" align="left" valign="top" class="subheading"><input type="text" name="module_0" id="module_0" /></td> <td width="15%" align="left" valign="top" class="subheading"><input type="text" name="organisation_o" id="organisation_o" /></td> <td width="20%" align="left" valign="top" class="subheading" nowrap="nowrap"><input type="text" name="cat_0" id="cat_0" /></td> <td width="20%" align="left" valign="top" class="text" nowrap="nowrap"><span onclick="addInput()" class="link">Add</span> | <span onclick="removeInput()" class="link">Remove </span></td> </tr> <tbody id="text"> </tbody> <?php } ?> can any one give me solution?

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  • htaccess handler

    - by Steve
    Hi Everyone, I have strange problem that need help. It is about rewrite using apache. Here my .htaccess content file: Options +FollowSymLinks ## This is an example .htaccess-file ## To get everything automatically parsed, the following line is needed #set link auto on ##From now on, every RewriteRule gets recognised. RewriteEngine on RewriteRule captcha(\.html){0,1}$ captcha.php [QSA,L] RewriteCond %{SCRIPT_FILENAME} !-s RewriteCond %{SCRIPT_FILENAME} !-d RewriteCond %{SCRIPT_FILENAME} !-f Rewriterule (.*) handler.php ##You can also change the text before the real link by the following line With this rule, I am hoping that all request except there is exists in file or directory will be directed to my custom handler: handler.php. Everyting just fine as expected but this case not: http://../test/form_login/query=%2Ftest%2Findex.php%3Fpage%3Dform& Root url: /test/, form_login is not file or directory index.php is exists in the root. Apache response with : 404 Page Not Found Thanks for any of your help. Regards, Steve

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  • VB.net Net after load event?

    - by themaninthesuitcase
    I need some way of knowing when a form has finished loading. My reasoning is I have a 2nd form that is loaded when this form loads. The code for this is called from form1.load. Form2 is currently being displayed behind form1 as I am guessing form1 calls an activate or similar at the end of the load so any Activate, BringToFront etc calls on from2 are over ridden. If you look at the code below I have tried adding frmAllocationSearch.Activate, frmAllocationSearch.BringToFront and Me.SendToBack after the call to ShowAlloactionSearchDialog() but these are all wasted as something is happening after the load event is fired to bring Me to the front. Code is: Private Sub Allocation_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load ShowAlloactionSearchDialog() End Sub Private Sub ShowAlloactionSearchDialog() If frmAllocationSearch Is Nothing OrElse frmAllocationSearch.IsDisposed Then frmAllocationSearch = New AllocationSearch frmAllocationSearch.MdiParent = Me.MdiParent frmAllocationSearch.Info = Me.Info frmAllocationSearch.Top = Me.Top frmAllocationSearch.Left = Me.Left + Me.Width - frmAllocationSearch.Width frmAllocationSearch.AllocationWindow = Me frmAllocationSearch.Show() Else If frmAllocationSearch.WindowState = FormWindowState.Minimized Then frmAllocationSearch.WindowState = FormWindowState.Normal frmAllocationSearch.Activate() End If End Sub

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  • Access generic type parameter at runtime?

    - by Bart van Heukelom
    Event dispatcher interface public interface EventDispatcher { <T> EventListener<T> addEventListener(EventListener<T> l); <T> void removeEventListener(EventListener<T> l); } Implementation public class DefaultEventDispatcher implements EventDispatcher { @SuppressWarnings("unchecked") private Map<Class, Set<EventListener>> listeners = new HashMap<Class, Set<EventListener>>(); public void addSupportedEvent(Class eventType) { listeners.put(eventType, new HashSet<EventListener>()); } @Override public <T> EventListener<T> addEventListener(EventListener<T> l) { Set<EventListener> lsts = listeners.get(T); // ****** error: cannot resolve T if (lsts == null) throw new RuntimeException("Unsupported event type"); if (!lsts.add(l)) throw new RuntimeException("Listener already added"); return l; } @Override public <T> void removeEventListener(EventListener<T> l) { Set<EventListener> lsts = listeners.get(T); // ************* same error if (lsts == null) throw new RuntimeException("Unsupported event type"); if (!lsts.remove(l)) throw new RuntimeException("Listener is not here"); } } Usage EventListener<ShapeAddEvent> l = addEventListener(new EventListener<ShapeAddEvent>() { @Override public void onEvent(ShapeAddEvent event) { // TODO Auto-generated method stub } }); removeEventListener(l); I've marked two errors with a comment above (in the implementation). Is there any way to get runtime access to this information?

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  • UrlHelper and ViewContext inside an Authorization Attribute

    - by DM
    I have a scenario that I haven't been able to solve: I'm toying around with creating my own custom authorization attribute for mvc. The main bit of functionality I would like to add is to have the ability to change where the user gets redirected if they are not in a certain role. I don't mind that the system sends them back to the login page if they're not authenticated, but I would like to choose where to send them if they are authenticated but not allowed to access that action method. Here's is what I would like to do: public class CustomAuthorizeAttribute : AuthorizeAttribute { public string Action; public string Controller; protected override bool AuthorizeCore(System.Web.HttpContextBase httpContext) { // if User is authenticated but not in the correct role string url = Url.Action(this.Action, this.Controller); httpContext.Response.Redirect(url); } } And as an added bonus I would like to have access to ViewContext and TempData before I do the redirect. Any thoughts on how I could get instantiate a UrlHelper and ViewContext in the attribute?

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  • Javascript onfocus event

    - by tazim
    I have textbox whose value if entered needs to be validated using some regularexpression I need to validate the value as user is entering the data. Which is suitable event can be used for this ? some sample example of using onfocus event on textbox will be helpful

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  • Javascript onunload form submit isn't submitting data

    - by Kevin
    I currently have form that checks if a user has unsubmitted changes when they leave the page with a function called through the onunload event. Here's the function: function saveOnExit() { var answer = confirm("You are about to leave the page. All unsaved work will be lost. Would you like to save now?"); if (answer) { document.main_form.submit(); } } And here's the form: <body onunload="saveOnExit()"> <form name="main_form" id="main_form" method="post" action="submit.php" onsubmit="saveScroll()"> <textarea name="comments"></textarea> <input type="submit" name="submit2" value="Submit!"/> </form> I'm not sure what I'm doing wrong here. The data gets submitted and saved in my database if I just press the submit button for the form. However, trying to submit the form through the onunload event doesn't result in anything being stored, from what I can tell. I've tried adding onclick alerts to the submitt button and onsubmit alerts to the form elements and I can verify that the submit button is being triggered and that the form does get submitted. However, nothing gets passed stored in the database. Any ideas as to what I'm doing wrong? Thanks.

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  • WPF- Why can't my custom textbox be selected?

    - by highone
    I have this custom textbox that I am working on and I can use it in xaml, but when I run my app I cannot select it or type in it. Here is my code: public class ModdedTextBox : TextBox { private bool selectionStartChangeFromUI; private bool selectionLengthChangeFromUI; private bool selectedTextChangeFromUI; static ModdedTextBox() { DefaultStyleKeyProperty.OverrideMetadata(typeof(ModdedTextBox), new FrameworkPropertyMetadata(typeof(ModdedTextBox))); //this.SelectionChanged += this.OnSelectionChanged; //PropertyDescriptor VerticalOffsetProperty = TypeDescriptor.GetProperties(typeof(ModdedTextBox))["VerticalOffset"]; //VerticalOffsetProperty.AddValueChanged(this, this.OnVerticalOffsetChanged); } public static readonly DependencyProperty BindableSelectionStartProperty = DependencyProperty.Register( "BindableSelectionStart", typeof(int), typeof(ModdedTextBox), new PropertyMetadata(OnBindableSelectionStartChanged)); public static readonly DependencyProperty BindableSelectionLengthProperty = DependencyProperty.Register( "BindableSelectionLength", typeof(int), typeof(ModdedTextBox), new PropertyMetadata(OnBindableSelectionLengthChanged)); public static readonly DependencyProperty BindableSelectedTextProperty = DependencyProperty.Register( "BindableSelectedText", typeof(string), typeof(ModdedTextBox), new PropertyMetadata(OnBindableSelectedTextChanged)); public static readonly DependencyProperty DelayedTextProperty = DependencyProperty.Register( "DelayedText", typeof(string), typeof(ModdedTextBox), new PropertyMetadata(OnDelayedTextChanged)); public int BindableSelectionStart { get { return (int)this.GetValue(BindableSelectionStartProperty); } set { this.SetValue(BindableSelectionStartProperty, value); } } public int BindableSelectionLength { get { return (int)this.GetValue(BindableSelectionLengthProperty); } set { this.SetValue(BindableSelectionLengthProperty, value); } } public string BindableSelectedText { get { return (string)this.GetValue(BindableSelectedTextProperty); } private set { this.SetValue(BindableSelectedTextProperty, value); } } public string DelayedText { get { return (string)this.GetValue(DelayedTextProperty); } private set { this.SetValue(DelayedTextProperty, value); } } private static void OnBindableSelectionStartChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs args) { var textBox = dependencyObject as ModdedTextBox; if (!textBox.selectionStartChangeFromUI) { int newValue = (int)args.NewValue; textBox.SelectionStart = newValue; } else { textBox.selectionStartChangeFromUI = false; } } private static void OnBindableSelectionLengthChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs args) { var textBox = dependencyObject as ModdedTextBox; if (!textBox.selectionLengthChangeFromUI) { int newValue = (int)args.NewValue; textBox.SelectionLength = newValue; } else { textBox.selectionLengthChangeFromUI = false; } } private static void OnBindableSelectedTextChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs args) { var textBox = dependencyObject as ModdedTextBox; if (!textBox.selectedTextChangeFromUI) { string newValue = (string)args.NewValue; textBox.BindableSelectedText = newValue; } else { textBox.selectedTextChangeFromUI = false; } } private static void OnDelayedTextChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs args) { } private void OnSelectionChanged(object sender, RoutedEventArgs e) { if (this.BindableSelectionStart != this.SelectionStart) { this.selectionStartChangeFromUI = true; this.BindableSelectionStart = this.SelectionStart; } if (this.BindableSelectionLength != this.SelectionLength) { this.selectionLengthChangeFromUI = true; this.BindableSelectionLength = this.SelectionLength; } if (this.BindableSelectedText != this.SelectedText) { this.selectedTextChangeFromUI = true; this.BindableSelectedText = this.SelectedText; } } private void OnVerticalOffsetChanged(object sender, EventArgs e) { MessageBox.Show("hello the vertical offset works"); } }

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  • How to test if raising an event results in a method being called conditional on value of parameters

    - by MattC
    I'm trying to write a unit test that will raise an event on a mock object which my test class is bound to. What I'm keen to test though is that when my test class gets it's eventhandler called it should only call a method on certain values of the eventhandlers parameters. My test seems to pass even if I comment the code that calls ProcessPriceUpdate(price); I'm in VS2005 so no lambdas please :( So... public delegate void PriceUpdateEventHandler(decimal price); public interface IPriceInterface{ event PriceUpdateEventHandler PriceUpdate; } public class TestClass { IPriceInterface priceInterface = null; TestClass(IPriceInterface priceInterface) { this.priceInterface = priceInterface; } public void Init() { priceInterface.PriceUpdate += OnPriceUpdate; } public void OnPriceUpdate(decimal price) { if(price > 0) ProcessPriceUpdate(price); } public void ProcessPriceUpdate(decimal price) { //do something with price } } And my test so far :s public void PriceUpdateEvent() { MockRepository mock = new MockRepository(); IPriceInterface pi = mock.DynamicMock<IPriceInterface>(); TestClass test = new TestClass(pi); decimal prc = 1M; IEventRaiser raiser; using (mock.Record()) { pi.PriceUpdate += null; raiser = LastCall.IgnoreArguments().GetEventRaiser(); Expect.Call(delegate { test.ProcessPriceUpdate(prc); }).Repeat.Once(); } using (mock.Playback()) { test.Init(); raiser.Raise(prc); } }

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  • VB Equivalent of C# Event Creation

    - by Steven
    I'm trying to extend the GridView class to always show the header and footer even when the datasource is empty. I found this website: link. However, it is written in C# but I use VB. What's the VB equivalent of line 76 (public event MustAddARowHandler MustAddARow;)?

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