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validation
client-side versus server-side
client-side with JavaScript
advantages
debugging
DOM
2nd
events
example script
examples
functions
generic validation function
JavaScript syntax
loops and conditionals
methods and properties
navigator object
objects
common approaches
effective models
error reporting and
ineffective models
informative error messages
post-validation models
rekeying of data, avoiding
server-side with PHP
credit cards
dates and times
mandatory data
numbers
PEAR Date package, using
strings
time validation
sessions and
var_dump( ) function (PHP)
array values, displaying with
variable substitution
variables
2nd
destroying
escape sequences and
global variables
passing to functions
assigning by reference
by reference
default parameter values
static variables
types
checking
testing, setting, and unsetting
variable assignment
variable scope
views
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