21-1.txt

Javascript语言开发经典教程开发

<!-- 
  This is an included script. Its contents will be placed in the JAR
  file. The ARCHIVE attribute specifies the name of the JAR file, and
  the SRC file specifies the name for the code within the archive, and
  also the name of the digital signature of that code.
-->
<SCRIPT ARCHIVE="history.jar" SRC="history.js"></SCRIPT>

<SCRIPT ID="s1">
/*
 * This is an inline script. It implicitly uses the ARCHIVE attribute
 * specified in the first SCRIPT tag. The ID tag specifies the name
 * under which the digital signature for this code will be stored.
 */
var history_window;
</SCRIPT>

<FORM>
<!--
  These two buttons both have event handlers that contain JavaScript
  code, and must therefore be signed. The ID attributes specify the
  names under which the digital signatures of the code will be stored
  in the JAR file specified by a previous ARCHIVE attribute. Note that
  an ARCHIVE attribute can only be specified for a SCRIPT tag, so 
  a SCRIPT tag must appear before any event handlers appear.
-->
<INPUT TYPE=BUTTON VALUE="Show History" ID="s2"
       onClick="history_window = openHistoryWindow();">
<INPUT TYPE=BUTTON VALUE="Hide History" ID="s3"
       onClick="history_window.close();">
</FORM>