function selectiongrp_logicControl( s_selectiongrpName, b_useJQueryUiThemeToDecorate )
{
// Safeguard measure: If the mandatory function parameter is undefined or empty, nothing can be proceed further, so quit the current function with excit code:
if ( !s_selectiongrpName ) return -1;
// Define a constant for future use:
var ADF_THIS_IS_LAST_SELECTED='adf_this-is-last-selected';
// Hide the 'contingent select option item' and all its relevant ancillary objects (i.e. the label element):
$( '#' + s_selectiongrpName + '-option-X' ).hide();
$( '#' + s_selectiongrpName + '-option-X' ).next( 'label' ).hide();
// Decorate the selection group option items and their labels by applying the jQueryUI 'buttonset' function:
if( b_useJQueryUiThemeToDecorate ) $( '#jQueryUi-' + s_selectiongrpName).buttonset();
// Loop for each option item within the selection group:
$( 'input[name=' + s_selectiongrpName + ']' ).each( function()
{
// Define an 'onClick' event for every option item within the selection group:
$( this ).on( 'click', function()
{
// If the option item being clicked is the last selected one, then de-select such item.
// Two ways can achieve de-selection, apply either one below to adapt to your programming style or desired controller mechanism.
if( $( this ).attr( ADF_THIS_IS_LAST_SELECTED ) )
{
// Way[1]: Force selecting another item within the same selection group.
// This Way entails the 'contingent select option item'. So, if you consider such 'contingent select option item' is unnecessary/inappropriate to your programming style or controller mechanism, please don't choose this Way.
// (Note: Such 'contingent select option item' was deliberately hidden at the outset).
// $( '#' + s_selectiongrpName + '-option-X' ).prop( 'checked', true );
// Way[2]: Simply remove the current item's "checked" attribute:
$( this ).removeAttr( 'checked' );
// Both Way[1] and Way[2]: Remove the additional attribute from the item being clicked.
$( this ).removeAttr( ADF_THIS_IS_LAST_SELECTED );
} else
{
// Apply an additional attribute to the item being clicked. This additional attribe functioned as a secret hint for internal reference to signify the item was the last seledcted one:
$( this ).attr( ADF_THIS_IS_LAST_SELECTED, ADF_THIS_IS_LAST_SELECTED );
}
// Other than the item being clicked, all other items (i.e. denotes by the jQuery 'not( this )' selector) should have removed such additional attribute:
$( 'input[name=' + s_selectiongrpName + ']' ).not( this ).removeAttr( ADF_THIS_IS_LAST_SELECTED );
// Force the jQueryUI engine to re-render the decoration to reflect the latest selection by applying the 'buttonset' function again ( provide the 'refresh' parameter ):
if( b_useJQueryUiThemeToDecorate ) $( '#jQueryUi-' + s_selectiongrpName ).buttonset( 'refresh' );
// Lastly, this is an optional step, refresh the Result Area for displaying user's latest selection on specific screen area:
selectiongrp_visualControl_refreshResultArea( s_selectiongrpName );
});
});
}
function selectiongrp_visualControl_refreshResultArea( s_selectiongrpName )
{
// Safeguard measure: If the mandatory function parameter is undefined or empty, nothing can be proceed further, so quit the current function with excit code:
if( !s_selectiongrpName ) return -1;
var adf_resultArea_string;
var ADF_RESULTAREA_STRING_NOTHING_SELECTED='Nothing is selected';
// If Way[1] is adopted:
if( $( '#' + s_selectiongrpName + '-option-X' ).prop( 'checked' ) )
{
adf_resultArea_string=ADF_RESULTAREA_STRING_NOTHING_SELECTED;
} else // If Way[2] is adopted:
{
// If some option items are selected within the selection group:
if( $( 'input[name=' + s_selectiongrpName + ']:checked' ).length > 0 )
{
adf_resultArea_string='You have selected : [' + $( 'input[name=' + s_selectiongrpName + ']:checked' ).next( 'label' ).text() + ']';
} else
{
adf_resultArea_string=ADF_RESULTAREA_STRING_NOTHING_SELECTED;
}
}
$( '#fieldset-' + s_selectiongrpName + '-resultarea' ).html( adf_resultArea_string );
$( '#fieldset-' + s_selectiongrpName + '-result' ).show();
}
$( document ).ready( function()
{
var ADF_USE_JQUERYUI_THEME_TO_DECORATE=true;
selectiongrp_logicControl( 'selectiongrp-01', !ADF_USE_JQUERYUI_THEME_TO_DECORATE );
selectiongrp_logicControl( 'selectiongrp-02', ADF_USE_JQUERYUI_THEME_TO_DECORATE );
// If jQuery can be loaded properly, the error message must be hidden:
$( '#jquery-compatibility-error' ).hide();
});
<!-- Load jQuery core library -->
<script type='text/javascript' src='http://code.jquery.com/jquery-2.1.4.min.js'></script>
<!-- Load jQueryUI library -->
<script type='text/javascript' src='http://code.jquery.com/ui/1.11.4/jquery-ui.min.js'></script>
<!-- Load jQueryUI Theme library (make either one effective) -->
<!--
<link rel="stylesheet" type="text/css" href='http://code.jquery.com/ui/1.11.4/themes/ui-lightness/jquery-ui.min.css'/>
<link rel="stylesheet" type="text/css" href='http://code.jquery.com/ui/1.11.4/themes/ui-darkness/jquery-ui.min.css'/>
<link rel="stylesheet" type="text/css" href='http://code.jquery.com/ui/1.11.4/themes/blitzer/jquery-ui.min.css'/>
<link rel="stylesheet" type="text/css" href='http://code.jquery.com/ui/1.11.4/themes/eggplant/jquery-ui.min.css'/>
<link rel="stylesheet" type="text/css" href='http://code.jquery.com/ui/1.11.4/themes/flick/jquery-ui.min.css'/>
<link rel="stylesheet" type="text/css" href='http://code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.min.css'/>
<link rel="stylesheet" type="text/css" href='http://code.jquery.com/ui/1.11.4/themes/sunny/jquery-ui.min.css'/>
-->
<link rel='stylesheet' type='text/css' href='http://code.jquery.com/ui/1.11.4/themes/redmond/jquery-ui.min.css'>
This webpage is primarily to demonstrate de-selectable radio boxes.
<h3 id='jquery-compatibility-error'>ERROR: It was detected that JavaScript or jQuery coding does not load properly, so some advance feature cannot be realised.</h3>
<h3>Style1: Raw (i.e. no styling/decoration):</h3>
<fieldset id='fieldset-selectiongrp-01'>
<legend>Please <b>click</b> to <b>select</b> or <b>re-click</b> to <b>deselect</b></legend>
<span id='jQueryUi-selectiongrp-01'>
<input type='radio' name='selectiongrp-01' value='X' id='selectiongrp-01-option-X' checked/><label for='selectiongrp-01-option-X'>None/NULL/Non-Selected <small><small>(This option is provided for contingency purpose in case JavaScript or jQuery does not load)</small></small></label>
<input type='radio' name='selectiongrp-01' value='Y' id='selectiongrp-01-option-Y'/><label for='selectiongrp-01-option-Y'>Yes</label>
<input type='radio' name='selectiongrp-01' value='N' id='selectiongrp-01-option-N'/><label for='selectiongrp-01-option-N'>No</label>
<input type='radio' name='selectiongrp-01' value='U' id='selectiongrp-01-option-U' /><label for='selectiongrp-01-option-U'>Unknown</label>
</span>
</fieldset>
<fieldset id='fieldset-selectiongrp-01-result' style='display:none'> <!-- Initaially hidden by using stylesheet attribute "style='display:none'"-->
<legend>Selection</legend>
<span id='fieldset-selectiongrp-01-resultarea'><br/></span>
</fieldset>
<br/>
<h3>Style2: Decorated by "jQueryUI Theme" <small><small>(jQueryUI Theme adopted: '<i>Redmond</i>')</small></small>:</h3>
<fieldset id='fieldset-selectiongrp-02'>
<legend>Please <b>click</b> to <b>select</b> or <b>re-click</b> to <b>deselect</b></legend>
<span id='jQueryUi-selectiongrp-02'>
<input type='radio' name='selectiongrp-02' value='X' id='selectiongrp-02-option-X' checked/><label for='selectiongrp-02-option-X'>None/NULL/Non-Selected <small><small>(This option is provided for contingency purpose in case JavaScript or jQuery does not load)</small></small></label>
<input type='radio' name='selectiongrp-02' value='Y' id='selectiongrp-02-option-Y'/><label for='selectiongrp-02-option-Y'>Yes</label>
<input type='radio' name='selectiongrp-02' value='N' id='selectiongrp-02-option-N'/><label for='selectiongrp-02-option-N'>No</label>
<input type='radio' name='selectiongrp-02' value='U' id='selectiongrp-02-option-U' /><label for='selectiongrp-02-option-U'>Unknown</label>
</span>
</fieldset>
<fieldset id='fieldset-selectiongrp-02-result'style='display:none;'> <!-- Initaially hidden by using stylesheet attribute "style='display:none'"-->
<legend>Selection</legend>
<span id='fieldset-selectiongrp-02-resultarea'><br/></span>
</fieldset>