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              <div id="container">
<h1>Test Your Memory</h1>
 
  <div class="buttonHolder">
    <div id="buttons">
      <button id="reset">Reset</button>
      <button id="start">Start</button>
      <button id="strict">Mode</button>
      </div>
    
     <div class="buttonHolder">
    <button2 id="steps" type="button">Count </button2>
    <!--<div class="button" id="steps">-->
     </div>   
    </div>
 <div id="game">
   <div>
      <div id="red">
      </div>
      <div id="green">
      </div>
      <div>
      <div id="blue">
      </div>
      <div id="yellow">
      </div>
    </div>
</div>
</div>
<h1>Simon in Pastel</h1>
</div>
            
          
!
            
              /* globals */
h1 {
  color: #fff;
  text-align: center;
  font-family: 'arial', tahoma;
}

button {
  width: 10%;
  padding: 10px 0px;
  background-color: #d8d4d4;
  color: red;
  font-weight: bold;
  cursor: pointer;
}

button2 {
  width: 50%;
  padding: 10px 20px;
  background-color: #fff;
  color: #000;
  font-weight: bold;
  font-size: x-large;
  border: 3px solid #000;
  cursor: pointer;
}

button:hover {
  background-color: #ababab;
}

#container {
  background-color: #5b5353;
}

.buttonHolder{ 
text-align: center;
margin-top: 25px;
margin-bottom: 25px;
}

#game {
  width: 320px;
  margin: 0 auto;
  /*position: relative;*/
}

/* color tiles */
#red,#green,#yellow,#blue {
  position: relative;
  display: inline-block;
  width: 140px;
  height: 140px;
  border: 3px solid #000;
}
#red {
  background-color: #F49AC2;
}
#green {
  background-color: #77DD77;
}
#yellow {
  background-color:#FDFD96;
}
#blue {
  background-color: #779ECB;
}


            
          
!
            
              //cdnjs.cloudflare.com/ajax/libs/jquery/2.2.2/jquery.min.js

//variables
var colorArray = $("#red, #green, #blue, #yellow").toArray();
var randomArray;
var stepArray;
var playerArray = [];
var step = 0;
var strict = false;
var sounds = {
  "red": new Audio("https://s3.amazonaws.com/freecodecamp/simonSound1.mp3"),
  "green": new Audio("https://s3.amazonaws.com/freecodecamp/simonSound2.mp3"),
  "blue": new Audio("https://s3.amazonaws.com/freecodecamp/simonSound3.mp3"),
  "yellow": new Audio("https://s3.amazonaws.com/freecodecamp/simonSound4.mp3")
};

//js Math object allows you to perform mathematical tasks on numbers.
function makeRandomArray() {
  function math() {
    return Math.floor((Math.random() * 4) + 1);
  }
  var r = Array.apply(null, {
    length: 20
    //The map() method creates a new array with the results of calling a provided function on every element in this array.
  }).map(Function.call, math);
  var rA = [];
  for (var i = 0; i < r.length; i++) {
    rA.push(colorArray[r[i] - 1]);
  }
  return rA;
}

function updateStep(num) {
  step = num;
  $("#steps").html(step);
}

function newGame() {
  strict = strict;
  updateStep(0);
  randomArray = makeRandomArray();
  playAndAnimate();
}
//The every() method tests whether all elements in the array pass the test implemented by the provided function.
function is_same() {
  return playerArray.every(function(element, index) {
    return element === stepArray[index];
  });
}

function playAndAnimate() {
  playerArray = [];
  stepArray = randomArray.slice(0, step + 1); 
  function loopThroughStepArray(stepArray) {
    displayValue(stepArray, 0);
  }

  function displayValue(arr, i) {
    if (i < arr.length) {
      setTimeout(function() {
        sounds[arr[i].id].play();
        $(arr[i]).fadeTo('fast', 0.33).fadeTo('fast', 1);
        displayValue(arr, i + 1);
      }, 1200);  //fadeTo() method gradually changes the opacity, for selected elements, to a specified opacity (fading effect).
    }
  }
  loopThroughStepArray(stepArray);
  $("#red, #green, #blue, #yellow").on('click', function() {
    sounds[this.id].play();
    $(this).fadeTo('fast', 0.33).fadeTo('fast', 1);
    playerArray.push(this);
    if (playerArray.length === stepArray.length) {
      $("#red, #green, #blue, #yellow").off(); //removes all the handlers from the colored fields
      is_same();
      label:
        if (!is_same()) {
          if (strict === true) {
            alert("Strict mode....start over again");
            newGame();
            break label;
          }
          alert("Wrong!");
          playAndAnimate();
        } else {
          updateStep(step + 1);
          playAndAnimate();
        }
    }
  });
  if (step === 20) alert("Great Memory You Win!");
}

$(document).ready(function() {
  $("#steps").html(step);
  $("#reset").click(function() {
    $("#red, #green, #blue, #yellow").off();
    updateStep(0); //return to the first step of the game
    playAndAnimate();
  });
  $("#start").click(newGame);
  $("#strict").click(function() {
    strict = !strict;
    var mode = strict === true ? "Strict" : "Regular";
    $("#red, #green, #blue, #yellow").off();
    $("#strict").html(mode);
    alert("Playing " + mode);
    newGame();
  });
});

            
          
!
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