Adding Custom Meta Fields to Taxonomies in WordPress

<?php
// Add term page
add_action( 'category_add_form_fields', 'cxc_taxonomy_add_new_meta_field', 10, 2 );

function cxc_taxonomy_add_new_meta_field() {
	// this will add the custom meta field to the add new term page
	?>
	<div class="form-field">
		<label for="custom_term_meta"><?php _e( 'Custom meta field', 'cxc-codexcoach' ); ?></label>
		<input type="text" name="custom_term_meta" id="custom_term_meta" value="">
		<p class="description"><?php _e( 'Enter a value for this field','cxc-codexcoach' ); ?></p>
	</div>
	<?php
}
?>

<?php
// Edit term page
add_action( 'category_edit_form_fields', 'cxc_taxonomy_edit_meta_field', 10, 2 );

function cxc_taxonomy_edit_meta_field( $term ) {

	// put the term ID into a variable
	$term_id = $term->term_id;

	// retrieve the existing value(s) for this meta field. This returns an array
	$term_meta = get_term_meta( $term_id, 'custom_term_meta', true ); ?>
	<tr class="form-field">
		<th scope="row" valign="top"><label for="custom_term_meta]"><?php _e( 'Example meta field', 'cxc-codexcoach' ); ?></label></th>
		<td>
			<input type="text" name="custom_term_meta" id="custom_term_meta" value="<?php echo ( !empty($term_meta) ) ? $term_meta  : ''; ?>">
			<p class="description"><?php _e( 'Enter a value for this field','cxc-codexcoach' ); ?></p>
		</td>
	</tr>
	<?php
}
?>

<?php
// Save extra taxonomy fields callback function.
add_action( 'edited_category', 'cxc_save_taxonomy_custom_meta', 10, 2 );  
add_action( 'create_category', 'cxc_save_taxonomy_custom_meta', 10, 2 );

function cxc_save_taxonomy_custom_meta( $term_id ) {
	if ( isset( $_POST['custom_term_meta'] ) && !empty( $_POST['custom_term_meta'] ) ) {
		update_term_meta( $term_id, 'custom_term_meta', $_POST['custom_term_meta'] );
	}
} 
?>

<?php
$terms = get_the_terms( get_the_ID() , 'category' ); // Here Specify your taxonomy name
if( !empty( $terms ) ){ ?>
	<ul>
		<?php foreach ( $terms as $term ) {
			$custom_term_meta = get_term_meta($term->term_id, 'custom_term_meta', true);
			if(!empty($custom_term_meta)) { ?>
				<li><?php echo $custom_term_meta; ?>
			<?php }  } ?>
	</ul>
<?php } ?>