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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <title>Calling JavaScript from a Button</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1" /> <meta name="date" content="2009-04-14T16:11:30Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="Calling JavaScript from a Button" /> <meta name="relnum" content="Release 3.2" /> <meta name="partnum" content="E11947-01" /> <link rel="copyright" href="dcommon/html/cpyr.htm" title="Copyright" type="text/html" /> <link rel="stylesheet" href="dcommon/css/blafdoc.css" title="Oracle BLAFDoc" type="text/css" /> <link rel="contents" href="toc.htm" title="Contents" type="text/html" /> <link rel="up" href="preface.htm" title="Home" type="text/html" /> <link rel="up" href="app_comp.htm" title="Adding Application Components" type="text/html" /> <link rel="up" href="bldapp_js.htm" title="Incorporating JavaScript in..." type="text/html" /> <link rel="up" href="bldapp_js_but.htm" title="Calling JavaScript from a B..." type="text/html" /> <link rel="prev" href="bldapp_js_functions.htm" title="Previous" type="text/html" /> <link rel="next" href="ui_print_pg.htm" title="Next" type="text/html" /> </head> <body> <p id="BREADCRUMBING"><a href="preface.htm" title="Home">Home</a> > <a href="app_comp.htm" title="Adding Application Components">Adding Application Components</a> > <a href="bldapp_js.htm" title="Incorporating JavaScript in...">Incorporating JavaScript in...</a> > Calling JavaScript from a B...</p> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr valign="bottom"> <td align="left"></td> <td align="center"><a href="bldapp_js_functions.htm"><img src="dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="ui_print_pg.htm"><img src="dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="CIHFEEGH" name="CIHFEEGH"></a></p> <div class="sect2"> <h1><a name="HTMDB25496" id="HTMDB25496"></a>Calling JavaScript<a id="sthref1315" name="sthref1315"></a> from a Button</h1> <p>Calling JavaScript from a button is a great way to confirm a request. Oracle Application Express uses this technique for the delete operation of most objects. For example, when you delete a button, a JavaScript message appears asking you to confirm your request. Consider the following example:</p> <pre xml:space="preserve" class="oac_no_warn"> <script type="text/javascript"> function deleteConfirm(msg) { var confDel = msg; if(confDel ==null) confDel= confirm("Would you like to perform this delete action?"); else confDel= confirm(msg); if (confDel== true) doSubmit('Delete'); } </script> </pre> <p>This example creates a function to confirm a delete action and then calls that function from a button. Note that the function optionally submits the page and sets the value of the internal variable <code>:REQUEST</code> to <code>Delete</code>, thus performing the deletion using a process that conditionally executes based on the value of the request.</p> <p>Note that when you create the button, you would need to select <span class="bold">Action Redirect to URL without submitting page</span>. Then, you would specify a URL target such as the following:</p> <pre xml:space="preserve" class="oac_no_warn"> confirmDelete('Would you like to perform this delete action?'); </pre> <div align="center"> <div class="inftblnotealso"><br /> <table class="NoteAlso oac_no_warn" summary="" cellpadding="3" cellspacing="0"> <tbody> <tr> <td align="left"> <p class="notep1">See Also:</p> <a href="bldapp_but_wiz.htm#CJHEJHEI">"Creating a Button Using a Wizard"</a></td> </tr> </tbody> </table> <br /></div> <!-- class="inftblnotealso" --></div> </div> <!-- class="sect2" --> <!-- class="sect1" --> <!-- Start Footer --> <div class="footer"> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr> <td align="left"><span class="copyrightlogo">Copyright © 2003, 2009, Oracle and/or its affiliates. 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