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  1. #1
    _Nikkiz_ is offline Member
    Join Date
    Jul 2013
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    Default JSP autofill textbox

    When I fill in a 2 textboxes, I want two other textboxes to be automatically filled with the same thing if I check a checkbox.
    Java Code:
    <input type="textbox" name="billingaddress">
    <input type="textbox" name="billingcity">
    <input type="checkbox" name="chksameaddress" value="true">
    Boolean sameaddress = Boolean.parseBoolean( request.getParameter("chksameaddress")
    if (sameaddress)
        //not sure what to do here
    <input type="textbox" name="installationaddress">
    <input type="textbox" name="installationcity"
    thats just the basic framework. But I'm not sure how to get this to work. Any suggestions? or can you point me in the right direction?

  2. #2
    gimbal2 is offline Just a guy
    Join Date
    Jun 2013
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    Default Re: JSP autofill textbox

    Its input type="text", not input type="textbox".

    You have a few basic options, all javascript so not really for this forum but I can give you a nudge in the right direction.

    1) put the text fields and fill them, but make them visible/invisible through CSS based on the checkbox checked state. This will require putting an onChange javascript event listener on the checkbox.
    2) use Ajax logic (for example: JQuery) to fetch the address details from the server side when the checkbox is checked. That's more advanced material since you will need to create a servlet to actually be able to retrieve the data through an Ajax HTTP request.
    3) dumb non-ajax way done before "web 2.0": upon changing the checkbox let the page submit to itself so you can rebuild the page with the text fields either filled or not

    And of course you always have the option of not using JSPs anymore where you have to do everything yourself and in stead use an Ajax enabled framework such as Apache Wicket to make these kind of tasks a whole lot easier, once you are over the hump of learning the framework itself.
    "Syntactic sugar causes cancer of the semicolon." -- Alan Perlis

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