joncancode

function shouter(whatToShout) {
  return whatToShout.toUpperCase() + "!!!";
}


/* From here down, you are not expected to 
   understand.... for now :)  
   
   
   Nothing to see here!

joncancode

function computeArea(width, height) {
  return width * height
}


/* From here down, you are not expected to 
   understand.... for now :)  
   
   
   Nothing to see here!

joncancode

function doTrafficLights() {
  turnOffLights();
  var activeLight = getActiveLight();
  if (activeLight === 'red') {
  turnRed();
  }
  if (activeLight === 'yellow') {
  turnYellow();
  }
  if (activeLight === 'green') {

joncancode

function accessFirstItem(array) {
  return array[0]
}

function accessThirdItem(array) {
  return array[2]
}

joncancode

function average(numbers) {
  var total = numbers[0];
  for (var i=1; i < numbers.length; i++) {
    total+= numbers[i];
  }
  return total/numbers.length;
}

/* From here down, you are not expected to 
   understand.... for now :)  

joncancode

What is scope? Your explanation should include the idea of global vs. local scope.

The scope is what you are able to access within a group of code. Global scope refers to variables that are accessible everywhere, while the local scope is more specific. For example, if a variable is defined within a function, it is local to that function and no where outside of it. However, if a variable is defined outside of this function, it is global and you are able to access it in multiple functions. 

Why are global variables avoided?

Global variables make unintended side effects in a program more likely, meaning it will be harder to track down bugs in your code. There is just one global scope as opposed to the many local scopes that can be created (and bugs that can avoided from these multiple scopes).

Explain JavaScript's strict mode

joncancode

function keyDeleter(obj) {
  delete obj.foo;
  delete obj.bar;
  return obj;
}


var sampleObj = {
  foo: 'foo',
  bar: 'bar',

joncancode

var studentData = [
  {
    name: 'Tim',
    status: 'Current student',
    course: 'Biology'
  },
  {
    name: 'Sue',
    status: 'Withdrawn',
    course: 'Mathematics'

joncancode

function getTokens(rawString) {
  // NB: `.filter(Boolean)` removes any falsy items from an array
  return rawString.toLowerCase().split(/[ ,!.";:-]+/).filter(Boolean).sort();
}
  
function mostFrequentWord(text) {
  //this is saying we will use a function called mostFrequentWord that will have text as its only parameter
  
  var words = getTokens(text);
  //now we are making a variable called words that will basically be the getTokens function

joncancode

function handleBulbClicks() {
  $('.lightbulb').click(function(event){
$('.lightbulb').removeClass('bulb-on')
    $(event.currentTarget).addClass('bulb-on')
  });  
}

$(function() {
  handleBulbClicks();
});