davidicus

const myString = 'thisIsMyStringFool';
// find and separate words based off capital letter
const replacedString = myString.replace(/([A-Z])/g, ' &1');
//capitalize first letter of first word if not already
replacedString.replace(/^./, st => str.toUpperCase());

console.log(replacedString);
// output => This Is My String Fool

davidicus

var flattened = [[0, 1], [2, 3], [4, 5]].reduce(
  ( acc, cur ) => acc.concat(cur),
  []
);
// flattened is [0, 1, 2, 3, 4, 5]

davidicus

const myArray = [0, 1, 1, 2, 3, 3]

myArray.reduce((a, b) => {
  if (a.indexOf(b) < 0) {
    a.push(b);
  }
  return a;
}, []);

// returns [0,1,2,3]

davidicus

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify
// Converts a JavaScript value to a JSON string, optionally replacing values if a replacer function is specified, or optionally including only the specified properties if a replacer array is specified.
// @param {object} - The value to convert to a JSON string.
// @param {func/ array} - function that alters the behavior of the stringification process, or an array of String and Number objects that serve as a whitelist for selecting/filtering the properties
// @return {json} - A JSON string representing the given value.
JSON.stringify(<object>, <function/array>, <integer>);

// const obj = {Name: "David", Age: 37, Sex: true}
// JSON.stringify(obj, null, 2);
// JSON.stringify(obj, ["Name"], 2);

davidicus

const promisify = func => (...args) => {
    return new Promise((resolve, reject) => {
      func(...args, (err, result) => {
        err ? reject(err) : resolve(result);
      })
    });
}
// const delay = promisify((d, cb) => setTimeout(cb, d))
// delay(2000).then(() => console.log('Hi!')) -> Promise resolves after 2s

davidicus

const toTitleCase = (str) => {
  return (
    str.replace(/([^\W]+[^\s-]*) */g, 
    txt => txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase()
  ))
};

const string = 'this-is my string-yo';

toTitleCase(string);

davidicus

const dqs = (query) => document.querySelector(query);
const dqsa = (query) => document.querySelectorAll(query);

let element = dqs(".classname");

davidicus

// This works on all devices/browsers, and uses IndexedDBShim as a final fallback 
var indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB || window.shimIndexedDB;

// Open (or create) the database
var open = indexedDB.open("MyDatabase", 1);

// Create the schema
open.onupgradeneeded = function() {
    var db = open.result;
    var store = db.createObjectStore("MyObjectStore", {keyPath: "id"});

davidicus

  var json = {};
  let posts = []

  const loadJSON = (path, cb) => {
    var xobj = new XMLHttpRequest();
    xobj.overrideMimeType(`application/json`);
    xobj.open(`GET`, path, true);
    xobj.onreadystatechange = function () {
      if (xobj.readyState === 4 && xobj.status === 200) {
        cb(xobj.responseText);

davidicus

import HighlightJS from 'highlight.js'

createHighlightedCodeBlock (content, language) {
  let lineNumber = 0
  const highlightedContent = HighlightJS.highlightAuto(content, [language]).value

  /* Highlight.js wraps comment blocks inside <span class="hljs-comment"></span>.
     However, when the multi-line comment block is broken down into diffirent
     table rows, only the first row, which is appended by the <span> tag, is
     highlighted. The following code fixes it by appending <span> to each line