Date & Time
server side php form validation
also. Before taking up any client side validation it is advisable to
Demo of Simple Text input validation
Notice how you are prevented from submitting form unless the text input field is filled.
Ajax Form validation
Ajax Form validation II
Some of the requirement of validation before allowing form to be submitted is here. These validations are some sample only and actual requirement may change.
Can't be left blank, only text or only numeric data to be entered. There can be an upper limit of data entered in a textbox.
Radio button ( Period button ) :
One of the several radio button to be selected before submitting the form
User must check before submitting. One or more to be checked.
Listbox ( dropdown box ) :
One of the options has to be selected before submitting.
Can't be left blank or some minimu data to be entered. There can be a
restriction on maximum number of text to be entered
Element / Functions
Enable or Disable submit button of a web form
Resetting button on a form and Resetting the form by getElementById
Managing elements of a form by using getElementById
validation of period button
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Disabling the submit button till all the elements of the form are validated
getElementById to access form elements with event handlers
Period button Validation of a form
disabling Period button by a checkbox
How to limit number of checkboxes allowed to be clicked inside a form
Checkbox Validation of a form
Displaying checked value of a check box array
disabling checkbox by button click
Enable or disable of a text box by a checkbox
All Checking & Un checking in a group of checkboxes by single button
Adding options to a drop down list box
Removing options from a drop down list box
Moving options from one drop down list box to other
Dynamic population of second list box based on value of first list box
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Changing clock showing time
Moving Options from one Listbox to other
Managing group of Checkboxes
Limiting text to enter in textarea
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