kikar

function foo() {
  console.log(arr.map( i => i + this.a ));
}

var arr = [1,2,3];

var obj = {
  a: 2,
  foo: foo
};

kikar

function foo(a) {
    this.a = a;
}

var bar = new foo( 2 );
console.log( bar.a ); // 2

kikar

function foo() {
  console.log( this.a );
}

var obj = {
  a: 2
};

var foo2 = foo.bind(obj);

kikar

function foo() {
  console.log( this.a );
}

function doFoo(fn) {
  fn();
}

function doFoo2(fn, that) {
  fn.call(that);

kikar

function foo(type) {
  console.log( type + this.a );
}

var obj = {
  a: 2,
};

foo.call(obj, 'Call: '); // Call: 2
foo.apply(obj, ['Apply: ']); // Apply: 2

kikar

function foo() {
  console.log( this.a );
}

var obj = {
  a: 2,
  foo: foo
};

obj.foo(); // 2

kikar

function foo(num) {
  console.log( "foo: " + num );
  this.count++;
}

foo.count = 0;

foo(1); // foo: 1
foo(5); // foo: 5
foo(10); // foo: 10

kikar

Keybase proof

I hereby claim:

• I am kikar on github.
• I am kikar (https://keybase.io/kikar) on keybase.
• I have a public key whose fingerprint is 4BBB 1E1F 3CE1 BB29 D220 4233 EB63 5FEB 0113 CAB4

To claim this, I am signing this object: