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-#!/usr/local/bin/perl
-
-# This script illustrates how to use JavaScript to validate fill-out
-# forms.
-use CGI qw(:standard);
-
-# Here's the javascript code that we include in the document.
-$JSCRIPT=<<EOF;
- // validate that the user is the right age. Return
- // false to prevent the form from being submitted.
- function validateForm() {
- var today = new Date();
- var birthday = validateDate(document.form1.birthdate);
- if (birthday == 0) {
- document.form1.birthdate.focus()
- document.form1.birthdate.select();
- return false;
- }
- var milliseconds = today.getTime()-birthday;
- var years = milliseconds/(1000 * 60 * 60 * 24 * 365.25);
- if ((years > 20) || (years < 5)) {
- alert("You must be between the ages of 5 and 20 to submit this form");
- document.form1.birthdate.focus();
- document.form1.birthdate.select();
- return false;
- }
- // Since we've calculated the age in years already,
- // we might as well send it up to our CGI script.
- document.form1.age.value=Math.floor(years);
- return true;
- }
-
- // make sure that the contents of the supplied
- // field contain a valid date.
- function validateDate(element) {
- var date = Date.parse(element.value);
- if (0 == date) {
- alert("Please enter date in format MMM DD, YY");
- element.focus();
- element.select();
- }
- return date;
- }
-
- // Compliments, compliments
- function doPraise(element) {
- if (element.checked) {
- self.status=element.value + " is an excellent choice!";
- return true;
- } else {
- return false;
- }
- }
-
- function checkColor(element) {
- var color = element.options[element.selectedIndex].text;
- if (color == "blonde") {
- if (confirm("Is it true that blondes have more fun?"))
- alert("Darn. That leaves me out.");
- } else
- alert(color + " is a fine choice!");
- }
-EOF
- ;
-
-# here's where the execution begins
-print header;
-print start_html(-title=>'Personal Profile',-script=>$JSCRIPT);
-
-print h1("Big Brother Wants to Know All About You"),
- strong("Note: "),"This page uses JavaScript and requires ",
- "Netscape 2.0 or higher to do anything special.";
-
-&print_prompt();
-print hr;
-&print_response() if param;
-print end_html;
-
-sub print_prompt {
- print start_form(-name=>'form1',
- -onSubmit=>"return validateForm()"),"\n";
- print "Birthdate (e.g. Jan 3, 1972): ",
- textfield(-name=>'birthdate',
- -onBlur=>"validateDate(this)"),"<p>\n";
- print "Sex: ",radio_group(-name=>'gender',
- -value=>[qw/male female/],
- -onClick=>"doPraise(this)"),"<p>\n";
- print "Hair color: ",popup_menu(-name=>'color',
- -value=>[qw/brunette blonde red gray/],
- -default=>'red',
- -onChange=>"checkColor(this)"),"<p>\n";
- print hidden(-name=>'age',-value=>0);
- print submit();
- print end_form;
-}
-
-sub print_response {
- import_names('Q');
- print h2("Your profile"),
- "You claim to be a ",b($Q::age)," year old ",b($Q::color,$Q::gender),".",
- "You should be ashamed of yourself for lying so ",
- "blatantly to big brother!",
- hr;
-}
-