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HTML

              
                <!-- Currently BROKEN!
Working prototype on meesrutten.me :) -->
<main class="page__main">
    <div class="block--background">
      <div class="chatbot__overview">
        <ul class="chatlist">
          <li class="bot__output bot__output--standard">Hey, I'm Navvy!</li>
          <li class="bot__output bot__output--standard">I will guide you through Mees' portfolio!</li>
          <li class="bot__output bot__output--standard">
            <span class="bot__output--second-sentence">You can ask me a bunch of things!</span>
            <ul>
              <li class="input__nested-list">Something <span class="bot__command">about</span> Mees</li>
              <li class="input__nested-list">Mees' <span class="bot__command">best work</span></li>
              <li class="input__nested-list">Maybe I could <span class="bot__command">help</span> (for more instructions)</li>
              <li class="input__nested-list">Type <span class="bot__command">commands</span> for a list of every command</li>
            </ul>
            You could also scroll down to see Mees' full portfolio
          </li>
        </ul>
      </div>
      <div class="chatbox-area">
        <form action="" id="chatform">
            <textarea placeholder="Talk to me!" class="chatbox" name="chatbox" resize: "none" minlength="2"></textarea>
            <input class="submit-button" type="submit" value="send">
        </form>
      </div>
			    <div class="block--background"></div>

</main>
              
            
!

CSS

              
                /* https://meyerweb.com/eric/tools/css/reset/
   v2.0 | 20110126
   License: none (public domain)
*/

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
	display: block;
}
body {
	line-height: 1;
}
ol, ul {
	list-style: none;
}
blockquote, q {
	quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}
table {
	border-collapse: collapse;
	border-spacing: 0;
}

///////////////
// END OF RESET
///////////////
$main-color-1: #2ecc71;
$main-color-2: #27ae60;
$second-color-1: #CC8914;
$background-color: #363636;
$bot-output-delay: 600ms;

@import url('https://fonts.googleapis.com/css?family=Montserrat|Roboto');


*, *:before, *:after {
  box-sizing: border-box;
}

body {
  overflow-x: hidden;
  font-family: 'Roboto', sans-serif;
  font-weight: 400;
  font-size: 16px;
  font-size: 1em;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;

  line-height: 1.45;
  background-color: $background-color;
}

.chatbot__overview {

  background-color: $background-color;

  display: flex;
  flex-flow: row nowrap;
  align-content: space-between;

  // max-width: 35em;
  min-height: 80vh;
  max-height: 80vh;
  margin: 0 auto;

  // background-color: #444;
  // border: 1px solid #fff;
  padding: 1em;
  padding-bottom: 0;

  // overflow-y: scroll;
}

.chatbot__overview--container {
}

.chatlist {
  font-family: inherit;
  font-size: 1em;

  display: flex;
  flex-flow: column nowrap;
  align-items: flex-end;

  overflow-x: hidden;

  width: 100%;
  max-width: 35em;
  max-height: 75vh;
  margin: 0 auto;

  .userInput, .bot__output {
    padding: 0.85em;
    margin: 0.5em;
    max-width: 100%;

    background-color: #fff;
    border-radius: 5px;
    border-bottom: 1px solid #777;

    // transition: all 300ms ease-in;
  }
  .userInput {
    text-transform: lowercase;
    box-shadow: 1px 1px 2px #666;
    border-top: 4px solid $second-color-1;

    opacity: 0;

    animation-name: animateBubble;
    animation-duration: 400ms;
    animation-iteration-count: 1;
    animation-play-state: running;
    animation-fill-mode: forwards;
  }
  .bot__output {
    align-self: flex-start;
    box-shadow: -1px 1px 2px #666;
    border-top: 4px solid $main-color-2;
    // transform-origin: left 50%;
    will-change: auto;
    height: auto;

    opacity: 0;

    animation-name: animateBubble;
    animation-duration: 400ms;
    animation-iteration-count: 1;
    animation-play-state: paused;
    animation-fill-mode: forwards;
    &:last-child {
      display: none;
    }
  }
  .bot__command {
    // border-bottom: 2px solid $main-color-1;
    color: #f5f5f5;
    // background-color: $main-color-1;
    color: $main-color-2;
    font-weight: 600;
    padding: 0.1em;
  }
  .bot__output:nth-child(1){
    animation-delay: $bot-output-delay;
    animation-play-state: running;
  }
  .bot__output:nth-child(2){
    animation-delay: ($bot-output-delay * 2);
    animation-play-state: running;
  }
  .bot__output:nth-child(3){
    animation-delay: ($bot-output-delay * 3);
    animation-play-state: running;
  }
  .bot__output--standard:last-child{
    display: block;
  }
  .bot__output--failed {
    display: block !important;
  }
  .bot__output--second-sentence {
    display: block;
  }
  .bot__outputImage {
    max-width: 16em;
    height: 12em;
  }
}

@keyframes animateBubble {
  0%{
    transform: translateY(-20%);
    opacity: 0;
  }
  100%{
    transform: translateY(0);
    opacity: 1;
  }
}




.block--background {
  // background-color: $main-color-2;
  background-color: $background-color;
  width: 100vw;
  height: 100vh;
}

#chatform {
  display: flex;
  justify-content: center;
  // display: inline-block;
  // height: 100%;
  width: 80%;
  max-width: 35em;
  margin: 0 auto;
  padding-top: 1em;

  font-size: 1em;
  font-family: Helvetica;
  @media screen and(max-width: 29em) {
    width: 90%;
  }
}

.chatbox-area {
  margin: 0 auto;
  position: relative;
  bottom: 0;
  height: auto;
  width: 100%;
}

textarea[name="chatbox"] {
  resize: none;
  border: 2px solid $main-color-2;
  border-right: 0;
  // border-bottom: 0;
  width: 70%;
  background-color: transparent;
  color: #fff;
  // max-width: 30em;
  height: 3em;
  margin: 0;
  padding: 0.75em;
  // float: left;
  border-radius: 8px 0px 0px 8px;
  font-family: inherit;
  font-size: 1em;
  &:focus {
    outline: none;
    border: 2px solid lighten($main-color-2, 15%);
  }
}
::-webkit-input-placeholder { /* WebKit, Blink, Edge */
    color: #fff;
}
:-moz-placeholder { /* Mozilla Firefox 4 to 18 */
  color: #fff;
   opacity:  1;
}
::-moz-placeholder { /* Mozilla Firefox 19+ */
  color: #fff;
   opacity:  1;
}

input[type="submit"] {
  -webkit-appearance: none;
  appearance: none;
  border: 0;

  width: 25%;
  margin: 0;

  background-color: $main-color-2;
  color: #fff;
  border: 2px solid $main-color-2;
  border-left: 0;
  border-radius: 0 8px 8px 0;

  font-family: inherit;
  font-size: 1em;

  transition: 200ms all ease-in;
  &:hover {
    background-color: lighten($main-color-2, 15%);
    border-color: lighten($main-color-2, 15%);
    color: #fff;
  }

}

.input__nested-list {
  list-style: disc;
  list-style-position: inside;
  padding: 0.5em;
  &:first-child {
    padding-top: 1em;
  }
}

.input__nested-link {
  color: $main-color-1;
  text-decoration: none;
  border-bottom: 1px solid $main-color-1;
}


::-webkit-scrollbar
{
  width: 0.65em;  /* for vertical scrollbars */
  height: 0.65em; /* for horizontal scrollbars */
}

::-webkit-scrollbar-track
{
  background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb
{
  background: rgba(0, 0, 0, 0.3);
}

              
            
!

JS

              
                var sendForm = document.querySelector('#chatform'),
    textInput = document.querySelector('.chatbox'),
    chatList = document.querySelector('.chatlist'),
    userBubble = document.querySelectorAll('.userInput'),
    botBubble = document.querySelectorAll('.bot__output'),
    animateBotBubble = document.querySelectorAll('.bot__input--animation'),
    overview = document.querySelector('.chatbot__overview'),
    hasCorrectInput,
    imgLoader = false,
    animationCounter = 1,
    animationBubbleDelay = 600,
    input,
    previousInput,
    isReaction = false,
    unkwnCommReaction = "I didn't quite get that.",
    chatbotButton = document.querySelector(".submit-button")

sendForm.onkeydown = function(e){
  if(e.keyCode == 13){
    e.preventDefault();

    //No mix ups with upper and lowercases
    var input = textInput.value.toLowerCase();

    //Empty textarea fix
    if(input.length > 0) {
      createBubble(input)
    }
  }
};

sendForm.addEventListener('submit', function(e) {
  //so form doesnt submit page (no page refresh)
  e.preventDefault();

  //No mix ups with upper and lowercases
  var input = textInput.value.toLowerCase();

  //Empty textarea fix
  if(input.length > 0) {
    createBubble(input)
  }
}) //end of eventlistener

var createBubble = function(input) {
  //create input bubble
  var chatBubble = document.createElement('li');
  chatBubble.classList.add('userInput');

  //adds input of textarea to chatbubble list item
  chatBubble.innerHTML = input;

  //adds chatBubble to chatlist
  chatList.appendChild(chatBubble)

  checkInput(input);
}

var checkInput = function(input) {
  hasCorrectInput = false;
  isReaction = false;
  //Checks all text values in possibleInput
  for(var textVal in possibleInput){
    //If user reacts with "yes" and the previous input was in textVal
    if(input == "yes" || input.indexOf("yes") >= 0){
      if(previousInput == textVal) {
        console.log("sausigheid");

        isReaction = true;
        hasCorrectInput = true;
        botResponse(textVal);
      }
    }
    if(input == "no" && previousInput == textVal){
      unkwnCommReaction = "For a list of commands type: Commands";
      unknownCommand("I'm sorry to hear that :(")
      unknownCommand(unkwnCommReaction);
      hasCorrectInput = true;
    }
    //Is a word of the input also in possibleInput object?
    if(input == textVal || input.indexOf(textVal) >=0 && isReaction == false){
			console.log("succes");
      hasCorrectInput = true;
      botResponse(textVal);
		}
	}
  //When input is not in possibleInput
  if(hasCorrectInput == false){
    console.log("failed");
    unknownCommand(unkwnCommReaction);
    hasCorrectInput = true;
  }
}

// debugger;

function botResponse(textVal) {
  //sets previous input to that what was called
  // previousInput = input;

  //create response bubble
  var userBubble = document.createElement('li');
  userBubble.classList.add('bot__output');

  if(isReaction == true){
    if (typeof reactionInput[textVal] === "function") {
    //adds input of textarea to chatbubble list item
      userBubble.innerHTML = reactionInput[textVal]();
    } else {
      userBubble.innerHTML = reactionInput[textVal];
    }
  }

  if(isReaction == false){
    //Is the command a function?
    if (typeof possibleInput[textVal] === "function") {
      // console.log(possibleInput[textVal] +" is a function");
    //adds input of textarea to chatbubble list item
      userBubble.innerHTML = possibleInput[textVal]();
    } else {
      userBubble.innerHTML = possibleInput[textVal];
    }
  }
  //add list item to chatlist
  chatList.appendChild(userBubble) //adds chatBubble to chatlist

  // reset text area input
  textInput.value = "";
}

function unknownCommand(unkwnCommReaction) {
  // animationCounter = 1;

  //create response bubble
  var failedResponse = document.createElement('li');

  failedResponse.classList.add('bot__output');
  failedResponse.classList.add('bot__output--failed');

  //Add text to failedResponse
  failedResponse.innerHTML = unkwnCommReaction; //adds input of textarea to chatbubble list item

  //add list item to chatlist
  chatList.appendChild(failedResponse) //adds chatBubble to chatlist

  animateBotOutput();

  // reset text area input
  textInput.value = "";

  //Sets chatlist scroll to bottom
  chatList.scrollTop = chatList.scrollHeight;

  animationCounter = 1;
}

function responseText(e) {

  var response = document.createElement('li');

  response.classList.add('bot__output');

  //Adds whatever is given to responseText() to response bubble
  response.innerHTML = e;

  chatList.appendChild(response);

  animateBotOutput();

  console.log(response.clientHeight);

  //Sets chatlist scroll to bottom
  setTimeout(function(){
    chatList.scrollTop = chatList.scrollHeight;
    console.log(response.clientHeight);
  }, 0)
}

function responseImg(e) {
  var image = new Image();

  image.classList.add('bot__output');
  //Custom class for styling
  image.classList.add('bot__outputImage');
  //Gets the image
  image.src = "/images/"+e;
  chatList.appendChild(image);

  animateBotOutput()
  if(image.completed) {
    chatList.scrollTop = chatList.scrollTop + image.scrollHeight;
  }
  else {
    image.addEventListener('load', function(){
      chatList.scrollTop = chatList.scrollTop + image.scrollHeight;
    })
  }
}

//change to SCSS loop
function animateBotOutput() {
  chatList.lastElementChild.style.animationDelay= (animationCounter * animationBubbleDelay)+"ms";
  animationCounter++;
  chatList.lastElementChild.style.animationPlayState = "running";
}

function commandReset(e){
  animationCounter = 1;
  previousInput = Object.keys(possibleInput)[e];
}

// hlep

var possibleInput = {
  // "hlep" : this.help(),
  "help" : function(){
    responseText("You can type a command in the chatbox")
    responseText("Something like &quot;Navvy, please show me Mees&rsquo; best work&quot;")
    responseText("Did you find a bug or problem? Tweet me @MeesRttn")
    commandReset(0);
    return
    },
  "best work" : function(){
    responseText("I will show you Mees' best work!");
    responseText("These are his <a href='#animation'>best animations</a>")
    responseText("These are his <a href='#projects'>best projects</a>")
    responseText("Would you like to see how I was built? (Yes/No)")
    commandReset(1);
    return
    },
  "about" : function(){
    responseText("This is me, Navvy's maker, Mees Rutten");
    responseText("I'm a 22 year old Communication and Multimedia Design student");
    responseText("My ambition is to become a great Creative Front-End Developer");
    responseText("Would you like to know about Mees' vision? (Yes/No)");
    commandReset(2);
    return
    },
  "experience" : function(){
    responseText("Mees has previously worked at:");
    responseText("Cobra Systems as web- developer / designer");
    responseText("BIT Students as web- developer / designer");
    responseText("MediaMonks as a junior Front-end Developer");
    commandReset(3);
    return
  },
  "hobbies" : function(){
    responseText("Mees loves:");
    responseText("Coding complicated chatbots");
    responseText("Family time");
    responseText("Going out with friends");
    responseText("Working out");
    commandReset(4);
    return
  },
  "interests" : function(){
    responseText("Mees loves:");
    responseText("Coding complicated chatbots");
    responseText("Family time");
    responseText("Going out with friends");
    responseText("Working out");
    commandReset(5);
    return
  },
  "vision" : function(){
    responseText("Things I want to learn or do:");
    responseText("Get great at CSS & JS animation");
    responseText("Create 3D browser experiences");
    responseText("Learn Three.js and WebGL");
    responseText("Combine Motion Design with Front-End");
    commandReset(6);
    return
  },
  "contact" : function(){
    responseText("email: <a href='mailto:meesrutten@gmail.com?Subject=Hello%20Mees' target='_top'>send me a message</a>");
    responseText("Twitter: <a href='https://twitter.com/meesrttn'>@MeesRttn</a>");
    commandReset(7);
    return
  },
  "commands" : function(){
    responseText("This is a list of commands Navvy knows:")
    responseText("help, best work, about, vision, experience, hobbies / interests, contact, rick roll");
    commandReset(8);
    return
  },
  "rick roll" : function(){
    window.location.href = "https://www.youtube.com/watch?v=dQw4w9WgXcQ"
    },
  // work experience
}

var reactionInput = {
  "best work" : function(){
    //Redirects you to a different page after 3 secs
    responseText("On this GitHub page you'll find everything about Navvy");
    responseText("<a href='https://github.com/meesrutten/chatbot'>Navvy on GitHub</a>")
    animationCounter = 1;
    return
  },
  "about" : function(){
    responseText("Things I want to learn or do:");
    responseText("Get great at CSS & JS animation");
    responseText("Create 3D browser experiences");
    responseText("Learn Three.js and WebGL");
    responseText("Combine Motion Design with Front-End");
    animationCounter = 1;
    return
    }
}

              
            
!
999px

Console