Click on the button conditional and alert when the condition is not met

Hello

I have a problem with the click of a button; in my form when the user clicks on a button I have to run the True action only if an element has the value; otherwise I would show an alert message like "enter value < element >...". ».

It seems a simple problem, I tried to insert the condition "Is not null" and warning that the action of false, but it does not work.

Who is the Apex way to solve?

Thanks in advance.

Cry

1. replace the button URL type

Code - javascript:validate();

2. create a javascript function in the page function and declaration of global variables

function validate()

{

If ($v ('YOUR_ITEM_NAME') == ")

Alert ('XYZ');

on the other

Apex. Submit ('BUTTON_NAME');

}

Tags: Database

Similar Questions

  • Clicks of the mouse do not work in IE9, Excel, iTunes and other programs.

    Clicks of the mouse are not working.  IE9, Excel, I-tunes and a few other programs.  It sometimes takes several mouse clicks, or in the case of IE9 when you activate the address bar or Favorites or even try to select a checkbox it seems that you must hold the button of the mouse down and after a few seconds, it will recognize the command.  With favorite IE9 you must hold down the mouse button and drag down to the place wherever you need to be communicated, then click on?  In Exel, the mouse cannot select multiple cells, in other programs her taking mulitple mouse clicks to highlight & copy text in the text example I've copied below from Microsoft answer Forum - I followed the instructions below and it did find and fix some problems, but there were others, he could not correct?  They were listed in another file, but I don't remember the name of the file, or how to access it?  I have run Norton 360 on my system and a complete analysis will detect all viruses?  Please advise?

    Thank you for using the Microsoft Answers forums. I suggest that you run the System File Checker. To use the tool (SFC.exe) System File Checker. To do this, follow these steps:

    Open an elevated command prompt. To do this, click Start, click programs, accessories principally made, right-click Guest, and then click Run as administrator. If you are prompted for an administrator password or a confirmation, type the password, or click on allow.

    Type the following command and press ENTER:

    sfc/scannow

    The sfc/scannow command. analysis of all protected system files and replaces incorrect versions with appropriate Microsoft versions

    Thank you

    Andrew Pugh

    Get your updated antivirus program and boot into Safe Mode. Note that some viruses can hide from your normal antivirus program, so you really need to scan in Safe Mode. To enter in Safe Mode when you turn on first, press F8 on every seconds until you get the menu, and then select Safe Mode. Then run a complete system scan.

    -

    Microsoft has suggestions and offerings to

    http://Windows.Microsoft.com/en-us/Windows7/how-do-I-remove-a-computer-virus

    -

    Moderator Forum Keith has a few suggestions along this line to

    http://answers.Microsoft.com/en-us/Windows/Forum/Windows_7-performance/Windows-Explorer-has-stopped-working/6ab02526-5071-4DCC-895F-d90202bad8b3

    -

    If that suits him fine. If this is not the case, use system restore to go back to an earlier date at the beginning of the problem. To run system restore, click Start-> programs-> Accessories-> System Tools-> system restore. Click on the box that says show more restore points.

    Finally if all else fails, you can look at the rather cryptic system event log. To do that click on start-> Control Panel-> administration-> event viewer tools. Once in Event Viewer system log-click and scroll entries looking for these "error" with indicator see if you can find guidance on where the problem may be.

    `

    When you get your system in good working condition, I invite you to back up your system up to an external hard drive and make it regular periodic updates.

    -

    I hope this helps. Good luck.

  • Left click of the mouse does not respond in the office and I could see 2 together (Picture) Office

    Everything works well today that the left click of the mouse is not responding on the desktop (icons does not meet the double click). Right click works ok, and left click works well on programs and in the taskbar.

    Weird things here, it's that I can see two desktop at the same time.

    I have attached a picture.

    Can someone help me?

    Thanks in advance.

    I got disabling the system restore, so I can't go back to a good version.

    Turn off the system restore makes things much more difficult. Your problem is probably due to an inappropriate registry setting. You can restore your registry files manually to a previous point through the steps described below. The process is complex and requires some careful typing. Ask a computer-savvy friend to help you if you lack experience in this field. You may reset your password to an earlier value.

    Check the date of the file C:\Windows\System32\config\regback\System. It precedes the date when you became aware of your problem? If so, follow these steps:

    1. keep tapping F8 during the first phase of startup.

    2. Select repair in the menu that looks like this.

    3 log in as administrator if you are prompted.

    4. Select repair when prompted.

    5. Select the command line in the menu that looks like this.

    6. identify the correct drive letter for your Windows installation. It could be one drive other than c, but it will not X:. You do this by typing commands
    DIR C:\Win*
    Dir D:\Win*
    dir E:\Win*
    until you find the Windows folder.
    I'll call this "Q:" drive
    7 type these commands exactly:
    CD /d Q:\windows\System32\config
    xcopy *. * Q:\MyRegBack\
    CD RegBack
    8 type these commands:
    copy software / y...
    /y copy system...
    /y copy Sam...
    (the two points are part of each order)
    10. restart normally. If things don't work then you can go back by copying files from the original register of Q:\MyRegBack to Q:\Windows\System32\config.

  • My iPhone my iPhone 5 guard by clicking on things at random, by clicking on the things im not clicking on and freeze momentarily. But the screen is not cracked

    My iPhone 5 guard by clicking on things at random, by clicking on the things im not clicking on and freeze momentarily. But the screen is not cracked

    You should go to the apple store and ask them to check it for you! You may have a faulty screen or faulty motherboard! in any case it is best to call or go to the apple store

  • Shortcuts mouse to "Open the link in a new tab" help "Middle-click on the link" does not work on 10.0.1

    Shortcut of mouse to "Open the link in a new tab" help "Middle-click on the link" does not work on 10.0.1, it worked on version 9.0.1.

    Start Firefox in Firefox to solve the issues in Safe Mode to check if one of the extensions or if hardware acceleration is the cause of the problem (switch to the DEFAULT theme: Firefox/tools > Modules > appearance/themes).

  • Satellite C660 - click of the mouse does not work

    Hello

    I bought this laptop 5 weeks ago and now have problems with the right, click on the mouse does not work. Left click sometimes opens to the left, click on functions and leaves me is impossible to close programs or closed, double clicking in the pavement or enter does not work also.

    I tried to do a system restore to the factory, but I can not click on the next to take me through the restoration and end up having to close it via the main power switch.

    Any ideas please?

    Hello

    You have the same problems with a mouse external or just the touchpad?

    If an external mouse works correctly, you can use it to do a recovery install. This can help you to solve the problem, if this just s software.

    Not least have last but you tried to update the driver for the touchpad? You can find it on the official website of Toshiba:
    http://EU.computers.Toshiba-Europe.com > support & downloads > download drivers

    Check this box!

  • Click of the mouse does not

    I recently bought a computer laptop sony vaio E15136 nine. The mouse was used to work much earlier, but now, the click of the mouse does not work in some parts of the screen. And the problem is not specific program. The click of the mouse does not work in this part of the screen for all programs. It does not in the upper left corner of the screen. He has no problem moving the cursor in this part, only clicking.

    aiyazkhan:

    Strange.  Have you tried a mouse USB or WiFi?  The same thing happens?  Also, have you tried to uninstall the touchpad driver and reinstall the driver from the touchpad on the site of support for your model: http://www.sony.co.in/support/product/SVE15136CN

    Please install all software updates/patches, then reboot and recheck the touchpad function.

    Joel

  • "Right click on the mouse do not work"

    Mouse: OP:
    The right click on the mouse does not work. How should I do?

    Hello

    You can view the configuration in the Control Panel, mouse.

    However, if the rest of the mouse does not work, it is probably time for a new mouse. For example, right-click switch does no more work.

    Jack-MVP Windows Networking. WWW.EZLAN.NET

  • Firefox 8.0.1 - right click of the mouse does not work and the menus at the top are not working. They sparkle and sometimes remain visible, but most of the time they cannot be seen.

    When I right click of the mouse on a link of the menu sparkles and especially is not visible. When I select the top menu bar, the menu selections twinkle and especially are not visible. It makes the browser unusable. This is a serious bug.

    Bookmark and menus flicker- https://support.mozilla.com/questions/850203

  • Is there a way to remove the icons on my desktop without deleting the associated files when right-clicking on the icon does not offer this option?

    Most of the icons that appear on my desk I have download the new application files can be removed without uninstall or remove related files.  But when I right click on the icons that appeared after reinstalling Panda Internet Security and download of Adobe Reader software to date there is no option to remove the icon, there is rather a prompt asking you if I'm sure I want to move the file to the trash - which I did not.  When I look at 'properties', I see that the location for the two is my office.  I'm trying to reduce the visual clutter, is it possible to do?

    Hello

    Click right icon - properties - general tab - Type of file - if it is a LNK then it's only a
    Shortcut and if you DELETE it then only it is removed and the underlying program is not
    affected. To see where the program check the tab shortcut - target:.

    If she is not a LNK and is a. EXE, com, bat and others so if if you delete the file
    (which is not a shortcut) and then the program will not work. Shortcuts usually have ARROWS
    on them in the lower left corner.

    For programs that are stand-a-lone (were copied on the desktop and not installed) you
    can make files elsewhere and copy them (and other parts such as.) DLL or. CFG
    only as examples and some will have no other room) to then remove them from the
    Desktop computer. If you have any programs that were installed on the desktop, you need to uninstall
    them and their re - install elsewhere.

    I hope this helps.

    Rob - bicycle - Mark Twain said it is good.

  • createToolTip and MouseEvent.CLICK on the ToolTip does not work

    Hello

    I didn't have success for a MouseEvent.CLICK working on a ToolTip created with ToolTipManager.createToolTip.

    Here is the code, no alert is displayed when I click on the ToolTip:

    private var tt:ToolTip;
    
    private function showToolTip( event:Event ):void
    {     
         tt = ToolTipManager.createToolTip( toolTipHelpText, 0 , 0 ) as ToolTip;
         tt.addEventListener( MouseEvent.CLICK, test )
    }
    
    private function test( event:MouseEvent ):void
    {
         Alert.show( 'test' );
    }
    

    Can I do something wrong?

    Thank you

    Set mouseEnabled = true on the ToolTip.  You may experience other side effects.  ToolTips are not necessarily designed for the mouse interaction

    Alex Harui

    Flex SDK Developer

    Adobe Systems Inc..

    Blog: http://blogs.adobe.com/aharui

  • When I click on the arrow down not give me any gift option.

    According to the article, click on the arrow down to the application and choose give this option point, but there is no option.

    Currently, you can only present content of the iTunes application. There is no donation option in the Mac App Store.

    By the end of 2012 Mac minis, macOS?  Watch, 38 mm silver AL, Watch OS 2.2.1. iPad 2 Air & iPhone 6 + iOS?  Apple Airport Express

  • Clicks of the mouse will not work on the browser - suggestions?

    Following an update of Firefox last year, I can't get the mouse clicks to work on the browser. Is not serious if he left or right buttons. Links and radio buttons get highlighted when you move the mouse over the links or buttons, but they do not work when you click on it. They work on other browsers (Explorer and Chrome) but is no longer on Firefox. I use it on a Sony Vaio laptop running Windows 7

    The reset Firefox feature can solve a lot of problems in restaurant Firefox to its factory default condition while saving your vital information.
    Note: This will make you lose all the Extensions, open Web sites and preferences.

    To reset Firefox, perform the following steps:

    1. Go to Firefox > help > troubleshooting information.
    2. Click on the button 'Reset Firefox'.
    3. Firefox will close and reset. After Firefox is finished, it will display a window with the imported information. Click Finish.
    4. Firefox opens with all the default settings applied.

    Information can be found in the article Firefox Refresh - reset the settings and Add-ons .

    This solve your problems? Please report to us!

  • Hi, I'm not able to click on the password do not forget for sites on my pc. What should I do? Melyssa assist/advice.

    When he tries to click on the button to memorize the password for these sites, it is crossed. See attachment.

    A detail as a website to remember you (automatically log you) is stored in a cookie.

    You can use these steps to make a Web site recognize and remember you:

    • Create a cookie 'allow' except to keep these cookies, in particular in the case of secure websites and when the cookies expire when Firefox is closed.
    • Tools > Options > privacy > "Use the custom settings for history" > Cookies: Exceptions

    You can delete cookies for a Web site to make the site forget about you.

    This problem may be caused by corrupted cookies or cookies that are blocked.

  • the desktop icons getting not selected & right click of the mouse does not

    When I start the system everything is normal but after completing the office do not get selected items either through the mouse or the touchpad and even click right does not work. Search Advisor.

    Hi Kishore Peddi,

    You did changes to the computer before the show?

    Method 1
    I suggest you to run the fixit from the following link:

    Difficulty of broken desktop shortcuts and common system maintenance tasks
    http://support.Microsoft.com/mats/system_maintenance_for_windows/en-us

    Method 2
    Step 1:
    I suggest to start the computer in safe mode and check if the problem persists.

    Start your computer in safe mode
    http://Windows.Microsoft.com/en-us/Windows-Vista/start-your-computer-in-safe-mode

    Step 2: I suggest you perform the clean boot and remove the program that is causing the problem.

    How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
    http://support.Microsoft.com/kb/929135
    Note: Follow step 7 clean boot KB929135 article to reset the computer in normal mode.

Maybe you are looking for