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Full Discussion: CGI cannot get the Value after click the button. URGENT!!!
Top Forums UNIX for Dummies Questions & Answers CGI cannot get the Value after click the button. URGENT!!! Post 302337325 by ryanW on Thursday 23rd of July 2009 10:00:48 PM
Old 07-23-2009
CGI cannot get the Value after click the button. URGENT!!!
Hi Everyone,

I am facing a problem, regarding cgi cannot receive the value from HTML after click submit. Here is the code

===============================================
#!/bin/bash
genHTML()
{
cat <<-__EOF__
Content-type: text/html
<html>
<script language="JavaScript">
<!--
function trim(str)
{
str = str.replace( /^\s+/g, "" );// strip leading
return str.replace( /\s+$/g, "" );// strip trailing
}
-->
</script>
<body>
<form name=loginForm id=loginForm method=post action="login.cgi">
<table>
<tr>
<td colspan="2" class="LabelStyle1">LOGIN</td>
</tr>
<tr>
<td><b>User ID: </b>
<input type=text name=username value="" size="15"/></td>
</tr>
<tr>
<td colspan="2" class="blank">&nbsp;</td>
</tr>
<tr>
<td colspan="2" class="blank">&nbsp;</td>
</tr>
<tr>
<tr>
<td class="userPass">Password</td>
<td><input id="pwd" class="inputText" type="password" size="15" /></td>
</tr>
<tr>
<td colspan="2" class="blank">&nbsp;</td>
</tr>
<tr><td align=center>
<font color=red size="+6"><b>$ErrorMessage</b></font>
</td></tr>
<tr>
<td><font size=+1><input type=submit
name=btnLogin value="Login"></font>
</td>
<td><input type="button"
value="Clear" />
</td>
</tr>
<tr>
<td colspan="2" class="blank">&nbsp;</td>
</tr>
</table>
</form>
</body>
</html>
__EOF__
}


echo "username=$username" >> aa.log

if [ "$username" == "123" ]
then
ErrorMessage="INVALID USER ID"
genHTML
elif [ "$username" == "333" ]
./nextpage.cgi
else
genHTML
fi
===========================================


I just wan to get the USERNAME name after the user key and click the button. But, USERNAME is empty that show in the log, seen like after click it will refresh to clear the USERNAME again. Do you know how to get the value after click the button? So, it can do the checking to display error message in the same page or run to other page. My purpose is just wan to know how to get the value after user key in then enter without clear the USERNAME.

Thank you
 

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LEARN ABOUT DEBIAN

keynav

KEYNAV(1)						      General Commands Manual							 KEYNAV(1)

NAME

       keynav - a keyboard-driven mouse cursor mover

SYNOPSIS

       keynav

DESCRIPTION

       Keynav  makes  your  keyboard a fast mouse cursor mover. You can move the cursor to any point on the screen with a few key strokes. It also
       simulates mouse click. You can do everything mouse can do with a keyboard.

HOW TO USE

       Run keynav, and activate it by pressing Ctrl+; (semicolon).  You should see a thin frame on the screen with a cross in it.

       Default configuration:

	* h	   : select the left half of the region
	* j	   : select the bottom half of the region
	* k	   : select the top half of the region
	* l	   : select the right half of the region
	* Shift+h  : move the region left
	* Shift+j  : move the region down
	* Shift+k  : move the region up
	* Shift+l  : move the region right
	* Semicolon: move the cursor to the center of the selected region
	* Spacebar : move the cursor and left-click
	* Escape   : cancel the move

CONFIGURATION

       You can configure your own key setting. There is an example in /usr/share/doc/keynav/keynavrc. Copy it to $HOME/.keynavrc and  edit  it	as
       you like.

CONFFILE COMMANDS

	* start        : activate keynav
	* end	       : deactivate keynav
	* cut-left     : select the left half of the region
	* cut-right    : select the right half of the region
	* cut-up       : select the top half of the region
	* cut-down     : select the bottom half of the region
	* move-left    : move the region left
	* move-right   : move the region right
	* move-up      : move the region up
	* move-down    : move the region down
	* warp	       : move the cursor to the center of the selected region
	* click 1      : left-click
	* click 2      : middle-click
	* click 3      : right-click
	* doubleclick 1: left-click twice quickly
	* doubleclick 2: middle-click twice quickly
	* doubleclick 3: right-click twice quickly
	* drag <button> [keyseq]: toggle dragging mode for the given button
				  Example: "drag 1 alt" to do a alt+click-drag
	* grid <rows>x<columns> : change the grid layout of the selection
				  Example: "grid 2x3" to cut screen to 6 cells
	* cell-select <row>x<column>: select a specific cell in the grid
	* cell-select <cell>	    : select a specific cell in the grid

AUTHOR

       keynav was written by Jordan Sissel <jls@semicomplete.com>.

       This manual page was written by Wen-Yen Chuang <caleb@calno.com>, for the Debian project (but may be used by others).

																	 KEYNAV(1)
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