JS Bin// source https://jsbin.com/yulaxar

jsbin.yulaxar.js

var foo = 10 + '20';
console.log(0.1 + 0.2 == 0.3); // false
console.log((1/10)+(2/10)); // 0.30000000000000004
var add1 = function(x,y) {
  return x+y;
}
var add = function(x) {
    return function(y) { return x + y; };
}
var addWithTwoArgs = add1(2,5); //7
var addWithTwoArgsSeparate = add(2)(5); //7
console.log(addWithTwoArgs);
console.log(addWithTwoArgsSeparate);

var revString = "i'm a lasagnahog".split('').reverse().join('');
console.log(revString);

var fooWindowVal =(window.foo || (window.foo = 'bar'));
console.log(fooWindowVal);

var foo = 'Hello';
(function(){
  var bar = " World";
  alert(foo + bar);
})();
alert(foo + bar);

var foo = [];
foo.push(1);
foo.push(2);
console.log(foo);

var foo = {n: 1};
var bar = foo;
foo.x = foo = {n: 2};
console.log(foo.x);

console.log('one');
setTimeout (function() {
  console.log('two');
}, 0);
console.log('three');

doSomething().then(function(){
  return doSomethingElse();
});
doSomething().then(function() {
  doSomethingElse();
});

doSomething().then(doSomethingElse());
doSomething().then(doSomethingElse);

programs.js

var foo = 10 + '20';
console.log(0.1 + 0.2 == 0.3);
console.log((1/10)+(2/10));
var add1 = function(x,y) {
  return x+y;
}
var add = function(x) {
    return function(y) { return x + y; };
}
var addWithTwoArgs = add1(2,5); //7
var addWithTwoArgsSeparate = add(2)(5); //7
console.log(addWithTwoArgs);
console.log(addWithTwoArgsSeparate);

var revString = "i'm a lasagnahog".split('').reverse().join('');
console.log(revString);

var fooWindowVal =(window.foo || (window.foo = 'bar'));
console.log(fooWindowVal);

var foo = 'Hello';
(function(){
  var bar = " World";
  alert(foo + bar);
})();
alert(foo + bar);

var foo = [];
foo.push(1);
foo.push(2);
console.log(foo);

var foo = {n: 1};
var bar = foo;
foo.x = foo = {n: 2};
console.log(foo.x);

console.log('one');
setTimeout (function() {
  console.log('two');
}, 0);
console.log('three');

doSomething().then(function(){
  return doSomethingElse();
});
doSomething().then(function() {
  doSomethingElse();
});

doSomething().then(doSomethingElse());
doSomething().then(doSomethingElse);
</script>



var foo = 10 + '20';
console.log(0.1 + 0.2 == 0.3);
console.log((1/10)+(2/10));
var add1 = function(x,y) {
  return x+y;
}
var add = function(x) {
    return function(y) { return x + y; };
}
var addWithTwoArgs = add1(2,5); //7
var addWithTwoArgsSeparate = add(2)(5); //7
console.log(addWithTwoArgs);
console.log(addWithTwoArgsSeparate);

var revString = "i'm a lasagnahog".split('').reverse().join('');
console.log(revString);

var fooWindowVal =(window.foo || (window.foo = 'bar'));
console.log(fooWindowVal);

var foo = 'Hello';
(function(){
  var bar = " World";
  alert(foo + bar);
})();
alert(foo + bar);

var foo = [];
foo.push(1);
foo.push(2);
console.log(foo);

var foo = {n: 1};
var bar = foo;
foo.x = foo = {n: 2};
console.log(foo.x);

console.log('one');
setTimeout (function() {
  console.log('two');
}, 0);
console.log('three');

doSomething().then(function(){
  return doSomethingElse();
});
doSomething().then(function() {
  doSomethingElse();
});

doSomething().then(doSomethingElse());
doSomething().then(doSomethingElse);