viswesh

{
  "name": "JavaScript Store",
  "short_name": "JavaScript Store",
  "lang": "en-US",
  "start_url": "/",
  "display": "fullscreen",
  "orientation": "portrait",
  "theme_color": "#f2e058",
  "icons": [
    {

viswesh

function propDefaults(defaults) {
    const handler = {
        get (obj, prop) {
            return Reflect.get(obj, prop) || defaults[prop];
        }
    };
    return new Proxy({}, handler);
}

const palette = propDefaults({color: "yellow"});

viswesh

let promise = new Promise((resolve, reject) => {
  //invoke async operation, then 
  if (/* success */) { 
      resolve("response received! Success!"); 
  } else { 
      reject(Error("Something failed")); 
  } 
});

promise.then(function(result) { 

viswesh

displayFeatures() { 
  this._features.forEach((feature, index) => console.info(`${this._language} feature ${index} ${feature}`))
}

viswesh

let s = “Hello”;
let sIterator =  s[Symbol.iterator]();
console.info( sIterator.next().value ) //H
console.info( sIterator.next().value ) //e
console.info( sIterator.next().value ) //l

viswesh

var store = {
  _language: “JavaScript”,
   _features: [],
   displayFeatures() { 
     this._features.forEach((feature, index) =>console.info(this._language + feature + index+ “ ”+ feature))
   }
}

viswesh

class Person { //instance method
  speak() {
    console.log(‘speak’);
  }
} 
class Person { //static method
  static isHuman() {}
} 
class Person { //initialize instances
  constructor(arguments) {}