$Web Form Parm Len: Difference between revisions
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{{DISPLAYTITLE:$Web_Form_Parm_Len}} | {{DISPLAYTITLE:$Web_Form_Parm_Len}} | ||
<span class="pageSubtitle" | <span class="pageSubtitle">Length of form field</span> | ||
<var>$Web_Form_Len</var> retrieves the length of a field in a form. <var>$Web_Form_Parm_Len</var> is a somewhat more syntactically correct synonym for <var>[[$Web_Form_Len]]</var>. | |||
<var>$Web_Form_Len</var> takes two arguments and returns a number, or zero if the field does not exist. | |||
==Syntax== | ==Syntax== | ||
<p class="syntax">< | <p class="syntax"><span class="term">%rc</span> = $Web_Form_[Parm_]Len( <span class="term">fieldname, occurrence</span> ) | ||
< | </p> | ||
===Syntax terms=== | |||
<table class="syntaxTable"> | |||
<tr><th>%rc</th> | |||
<td>A numeric variable to contain a return code.</td></tr> | |||
<tr><th>fieldname</th> | <tr><th>fieldname</th> | ||
<td>The name of the form field, returned by $Web_Form_Name. Required argument if occurrence not specified, otherwise optional.</td></tr> | <td>The name of the form field, returned by <var>[[$Web_Form_Name]]</var>. Required argument if <var class="term">occurrence</var> not specified, otherwise optional.</td></tr> | ||
<tr><th>occurrence</th> | <tr><th>occurrence</th> | ||
<td>The occurrence number of a form field, or the occurrence number of the form field matching | <td>The occurrence number of a form field, or the occurrence number of the form field matching <var class="term">fieldname</var>, if <var class="term">fieldname</var> is specified. Optional argument if <var class="term">fieldname</var> is specified, otherwise it is required. | ||
</td></tr></table> | </td></tr></table> | ||
==See also== | |||
See also | |||
<ul> | <ul> | ||
<li><var>[[$Web_Form_Name]]</var> | |||
<li>[[$Web_Form_Name]] | <li><var>[[$Web_Form_Parm]]</var> | ||
<li>[[$Web_Form_Parm]] | <li><var>[[$Web_Num_Form]]</var> | ||
<li>[[$Web_Num_Form]] | |||
</ul> | </ul> | ||
[[Category:Janus Web Server $functions|$Web_Form_Parm_Len]] | [[Category:Janus Web Server $functions|$Web_Form_Parm_Len]] | ||
Latest revision as of 22:33, 5 June 2013
Length of form field
$Web_Form_Len retrieves the length of a field in a form. $Web_Form_Parm_Len is a somewhat more syntactically correct synonym for $Web_Form_Len.
$Web_Form_Len takes two arguments and returns a number, or zero if the field does not exist.
Syntax
%rc = $Web_Form_[Parm_]Len( fieldname, occurrence )
Syntax terms
| %rc | A numeric variable to contain a return code. |
|---|---|
| fieldname | The name of the form field, returned by $Web_Form_Name. Required argument if occurrence not specified, otherwise optional. |
| occurrence | The occurrence number of a form field, or the occurrence number of the form field matching fieldname, if fieldname is specified. Optional argument if fieldname is specified, otherwise it is required. |