circlecube

...
class My_Widget extends WP_Widget {
	
	function __construct() {
		parent::__construct(
			'my-widget', // Base ID
			'My Widget', // Name
			array( 'description' => 'My Widget description.' ) // Args
		);
	}

circlecube

function circlecube_comment_form( $args ) {

    $args['class_submit'] = 'button'; // since WP 4.1
    
    return $args;
    
}

add_filter( 'comment_form_defaults', 'circlecube_comment_form' );

circlecube

<?php

function theme_enqueue_styles() {

    $parent_style = 'parent-style';

    wp_enqueue_style( $parent_style, get_template_directory_uri() . '/style.css' );
    wp_enqueue_style( 'child-style', get_stylesheet_directory_uri() . '/style.css', array( $parent_style ) );
}

circlecube

// add custom fields query to WP REST API v2
// https://1fix.io/blog/2015/07/20/query-vars-wp-api/
function my_allow_meta_query( $valid_vars ) {

    $valid_vars = array_merge( $valid_vars, array( 'meta_key', 'meta_value' ) );
    return $valid_vars;
}
add_filter( 'rest_query_vars', 'my_allow_meta_query' );

circlecube

/**
 * normalize takes a value within a given range
 * and converts it to a number between 0 and 1
 * (actually it can be outside that range
 * if the original value is outside its range).
 *
 * @param {*} value number to be normalized
 * @param {*} minimum low end of range - mapped to 0
 * @param {*} maximum high end of range - mapped to 1
 */

circlecube

/*
 * Fun with functions
 * 
 * Function exercieses from Douglas Crockford
 * in his The Good Parts of JavaScript and the Web
 * course on Frontendmasters
 * https://frontendmasters.com/courses/good-parts-javascript-web/
 */

// function that takes two numbers and return their sum