Multiselect onclick it select/highlights many items instead of just the selected one
Please see below code and help me where i need to change
<select onclick="selectMultiple(this);" size="11" multiple="multiple" name="<?php echo esc_attr( isset( $field['name'] ) ? $field['name'] : $key ); ?>
[]" id="<?php echo esc_attr( $key ); ?>">
<?php foreach ( $field['options'] as $key => $value ) : ?>
<?php if( has_term( $key, $taxonomy , $_GET['auto_id'] ) ) {
$is_selected = 'Selected="true"';
} else {
$is_selected = null;
}
?>
<option value="<?php echo esc_attr( $key ); ?>" <?php echo $is_selected; ?> ><?php echo esc_html( $value ); ?></option>
<?php endforeach; ?>
</select>