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A Button execute only a protion of the code inside it on the first click

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    A Button execute only a protion of the code inside it on the first click

    Everyone,

    I'm new to Alpha and trying to figure out my way. Today, I came across an unusual problem. In short, a button click doesn't execute all the code (java script) written for onClick event on the first click. But it does for the second click.


    Below is a screen capture of my UX. I want to get office and userlevel information for the user login-in from a table (access) and keep them as in StateInfo. The "Login" button is to get data from the database and store in SessionInfo. "Read State Info" button is to read what I have saved in SateInfo.

    I'm trying to save 3 variables in StateInfo. My problem is, it does only save the first variable in StateInfo on the first click ( on the login button). It does save save all three on the second click.

    LoginUX.JPG

    I have attached My Alpha files and the database file here as well. Here is how you can get in to the "situation" I'm having:

    1. Enter "sam" for both username and password. Click login button once.
    2. You will see Office and UserLevel text boxes populate with values from the database.
    3. Now, click on the "Read StateInfo" button. You will get one alert with "sam" and two blank alerts.
    3. Them click on the "Login" button again. Now when you click on "Read StateInfo" button again, you will get three alerts with data.

    Any idea on what I'm doing wrong here?

    Thanks in advance.
    Attached Files

    #2
    Re: A Button execute only a protion of the code inside it on the first click

    I can't run your component because I don't have Access installed. Your login button has two actions that will run at the same time when pressed. If you want the first action to run and then the second you need to check the "Run Synchronously" check box.


    Mike Brown - Contact Me
    Programmatic Technologies, LLC
    Programmatic-Technologies.com
    Independent Developer & Consultant​​

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      #3
      Re: A Button execute only a protion of the code inside it on the first click

      Mike,

      Thanks for the hint. I have done it and it didn't work it. Then I tried on the browser (instead of working preview). Bingo...! It worked as I hope for.

      Laksiri

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        #4
        Re: A Button execute only a protion of the code inside it on the first click

        Ahhhh ....I see. I always use "Live Preview" when testing components before publishing. Glad it worked out.
        Mike Brown - Contact Me
        Programmatic Technologies, LLC
        Programmatic-Technologies.com
        Independent Developer & Consultant​​

        Comment


          #5
          Re: A Button execute only a protion of the code inside it on the first click

          ** NEVER MIND ** I see not using Working Preview is the solution here. I just ran your component and there are no error at all to show in the console.

          Laksiri Tissera,
          Interesting! I reported the opposite kind of problem the other week in a Grid. The first time the grid is opened conditional styles using JS functions that reference the stateInfo object work, but the second time the grid is opened they fail (the setting of use cached or not makes a difference also). The problem was the second time the grid was opened, Alpha was (and still is) calling the conditional style expressions for the first row in the grid one time before it is supposed to, at a time when the stateInfo object has not been initialized by the Alpha JavaScript Library. The workaround for that is to wrap error checking "if" statements around any custom JavaScript code that references variables in the stateInfo object.

          BTW, if you are new to working with JavaScript then do a Internet search on "Developer Tools" and "Chrome or IE or Firefox". You will want to learn the basics of using the Developer Tools for these three browsers. There is a "Console" window included in these "Developer Tools" that displays the error message of why the JavaScript stopped. JavaScript will catch runtime errors and you won't know about them unless the console is turned on in Developer Tools. If you try to step through the Javascript you will quickly find yourself in the obfuscated (white-space eliminated) Alpha JavaScript Library. In Chrome press the curly braces in the bottom toolbar of the Developer Tools window to "pretty print" the JavaScript then you can trace okay. You may have to try all three browsers to see which one works best for you. I prefer Chrome for stepping through Javascript, but I prefer IE for inspecting HTML elements.
          Last edited by RichCPT; 07-30-2014, 11:19 PM. Reason: added "Never mind..."

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