js-examples.js

// primitives
var a = 5;
var b = a;
b = 6;
//a; // will be 5
//b; // will be 6

// complex
var a = ['hello', 'world'];
var b = a;
b[0] = 'bye';
//a[0]; // will be 'bye'
//b[0]; // will be 'bye'

setTimeout(function() {
  console.log('first or second');
  }, 500);
console.log('we will see');


var a = function a () {
  //'function' == typeof a; // true
};

function Person (name) {
  this.name = name;
}

Person.prototype.talk = function () {
  console.log('my name is', this.name);
};

//When a function throws an error, execution stops:

function t1 () {
  throw new Error('hi');
  //console.log('hi'); // this will never execute
}

function t2 () {
  var a = 5;
  try {
    a();
  } catch (e) {
    //e instanceof Error; // true
  }
  console.log('you got here!');
}

for (var i = 0; i < 10; i++) {
  if (object.hasOwnProperty(variable)) {
    //do something
  }
}

do {

} while (true);