arturparkhisenko

var fitElement = function fitElement(elementSelector, elementAspect) {
  var element = (typeof elementSelector === 'string' || elementSelector instanceof String) ? document.querySelector(elementSelector) : elementSelector,
    parW = element.parentNode.clientWidth,
    parH = element.parentNode.clientHeight,
    parAsp = parW / parH,
    aspect = elementAspect || 16 / 9,
    elW, elH;
  if (aspect > parAsp) {
    elW = parW;
    elH = elW / aspect;

arturparkhisenko

function BrowserInfo() {
  this.supported = false;
  this.isBrowser = true;
  this.webBrowser = null;
  this.webBrowserVer = null;
  this.os = 'unknown os';

  var detectedUA = null;

  if (typeof window === 'undefined' || !window.navigator) {

arturparkhisenko

/**
 * remove - removes DOM elements
 * working with: usual dom element, selector, jQuery object, Polymer object
 * @param {string | object} selectorOrObject - dom object
 */
function remove(selectorOrObject) {
  if (!selectorOrObject) {
    return;
  }

arturparkhisenko

//source: http://stackoverflow.com/questions/4508574/remove-hash-from-url
//Best is Homero Barbosa's answer below:
history.pushState('', document.title, window.location.pathname);
//... or, if you want to maintain the search parameters:
history.pushState('', document.title, window.location.pathname + window.location.search);

//Old, do not use, badwrongfun:
// var loc = window.location.href,
//     index = loc.indexOf('#');
// if (index > 0) {

arturparkhisenko

//https://developer.mozilla.org/en-US/docs/Web/Events/resize
;
(function() {
  var throttle = function(type, name, obj_) {
    var obj = obj_ || window;
    var running = false;
    var func = function() {
      if (running) {
        return;
      }

arturparkhisenko

//Setup
let el = document.getElementById('thingy');
let elChild = document.createElement('div');
elChild.innerHTML = 'Content';
//Append
el.appendChild(elChild);
//Prepend
el.insertBefore(elChild, el.firstChild);

arturparkhisenko

//source https://stackoverflow.com/questions/6359327/detect-back-button-click-in-browser
window.onload = function() {
  if (typeof history.pushState === "function") {
    history.pushState("jibberish", null, null);
    window.onpopstate = function() {
      history.pushState('newjibberish', null, null);
      // Handle the back (or forward) buttons here
      // Will NOT handle refresh, use onbeforeunload for this.
    };
  } else {

arturparkhisenko

const clone = data => {
  if (typeof data !== 'object' || data === null) {
    return data;
  }
  const copy = data instanceof Array ? data.constructor() : Object.create(Object.getPrototypeOf(data));
  for (const [key, value] of Object.entries(data)) {
    copy[key] = clone(value);
  }
  return copy;
};

arturparkhisenko

const prefetch = document.createElement('link');
prefetch.setAttribute('rel', 'prefetch');
prefetch.setAttribute('href', url);
document.head.appendChild(prefetch);

arturparkhisenko

// speed winners is: for-with-cached-length OR for-of-with-let > map > forEach

for (let key of iterable) {
  // do stuff
}

for (let key in obj) {
  if (obj.hasOwnProperty(key)) {
    // do stuff
  }