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CS205 Tables & Forms © 2012 D. J. Foreman
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Tables © 2012 D. J. Foreman
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Basic <table>Syntax
<table cols=# of columns > <tr> defines one ROW <td></td> defines one CELL <td></td> </tr> more rows </table> © 2012 D. J. Foreman
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Major <TABLE> attributes
border border thickness (e.g. 4) cellpadding margin around text cellspacing between cells cols helps compute table width frame border around whole table rules inside borders width whole table © 2012 D. J. Foreman
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Syntax for Table Cells <th align=… colspan=… rowspan=… valign=… > Options only affect current cell <td> uses same options as <TH> <caption> applies a title to top of table © 2012 D. J. Foreman
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Forms © 2012 D. J. Foreman
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Basic <Form> Syntax -1
<form action=URL method=(post/get)> <input name="field1"> <select> <option value="value1"> </option> more option tags </select> </input> </form> Usually uses a TABLE to line up fields © 2012 D. J. Foreman
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Caution Don't confuse the terminology: OPTION as a tag:
OPTION actually an attribute on a tag <BODY bgcolor='red'> © 2012 D. J. Foreman
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Basic <Form> Syntax -2
<form action=URL method=(post/get)> URL is to locate the CGI program CGI = Common Gateway Interface <table> <tr> <td><input></input></td> </tr> </table> </form> © 2012 D. J. Foreman
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<Form> methods Post Get preferred
data accessed via "standard input" (standard input/output is terminal I/O) Get less common (limited length) data passed as a parameter contains callers URL URL could be truncated © 2012 D. J. Foreman
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<FORM> processing
User clicks a "submit" button Browser send data to server Server starts the CGI program Server gives data to CGI program CGI program "builds" a webpage Output via "standard output" Contains HTML tags AND text Server sends "page" to browser Browser displays page © 2012 D. J. Foreman
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CGI's CGI programs can be written in: A CGI always runs on the server
Perl, Java, C++, C, etc. A CGI always runs on the server User cannot see the CGI program Sometimes called a "script" MS script files: anypage.ASP CGI Example: Dr. Foreman's CS105 Grade Tracker © 2012 D. J. Foreman
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