# `this` keyword

## Objectives
- Write an example of a function call
- Write an example of a method call
- Explain what the context (`this`) is on a function call
- Explain what the context (`this`) is on a method call
- Explain what `this` is
- Describe why `this` is important

## What is an example of a function call?

On your slates, write a function call for the following function definition

```js
function add(a,b){
  return a + b;
}
```

## What is an example of a method call?

On your slates, write a method call for each function in the following object

```js
const Math = {
  sum: function(a,b){ return a + b; },
  sub: function(a,b){ return a - b; },
  mult: function(a,b){ return a * b; },
  div: function(a,b){ return a / b; },
}

```

## What is the context (`this`) of a function call?

On your slates, write down what the context is on a function call.

## What is the context (`this`) of a method call?

On your slates, write down what the context is on a method call.

## In the following example, what is the context of `this` at the method call?

```
const person = {
  fname: 'John',
  lname: 'McClane',
  print: function(){
    console.log(`${this.fname} ${this.lname}`
  }
}

person.print()
```

On your slates, write down what `this` is a reference to.

## What is the `this` keyword?

Turn to your neighbor and explain what the `this` keyword is.

## Why is the `this` keyword important?

Turn to your neighbor and explain why the `this` keyword is important.