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Cold Fusion provides a server-side mechanism for requiring users to enter data in fields, using one of a set of special "suffixes".
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<INPUT type="hidden" NAME="FirstName_required">
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Data validation is also implemented by adding hidden fields to forms
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The hidden field suffixes includes _integer, _float, _range, _date, and _eurodate.
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<INPUT TYPE="hidden" NAME="Rooms_integer" VALUE="You must enter a number for the Rooms field.">
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<INPUT TYPE="hidden" NAME="Guests_range" VALUE="MIN=1 MAX=12">
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