Mastermind_JavaScript/index.html at master · SarahLucke/Mastermind_JavaScript · GitHub

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<!DOCTYPE html>
<html>
<head>
    <title>A Number Game</title>
    <link rel="stylesheet" type="text/css" href="common.css">
    <style>
    .dot {
      height: 20px;
      width: 20px;
      background-color: red;
      border-radius: 50%;
      display: inline-block;
    }
    .results{
      width: 20em;
      margin: auto;
    }
    </style>
</head>

<script>
// creates html representation of specified dot
function MakeDot(colour) {
  var string = '<span class="dot" style="background-color:';
  switch (colour) {
    case 'red':
      string += '#ff0000';
      break;
    case 'green':
      string += '#00cc00';
      break;
    case 'orange':
      string += '#ff9900';
      break;
    default:
      string += '#bbb';
      break;
  }
  string += ';"></span>';
  return string;
}
</script>

<body>
<div class="nav" id="nav">
  <h2>Navigation</h2>
  <li><a id="game" href="index.html" target="_self">Mastermind</a></li>
</div>
<div class="content" id="content">
  <h1>A Number Game</h1>
  <div id="info">
    Maybe you know the game Mastermind. I used to play it with my dad, but at
    that time we used colour pins instead of numbers. <br/>Even if you know it,
    there are different versions how you can play it. I made the more difficult
    one. <br/><br/>
    You have to guess five numbers, from 0 to 9.<br/>
    You get hints every round. But the hints are not sorted to fit the order of
    your inputs. They are simply sorted green, orange, red. <br/>
    <script>document.write(MakeDot('green'));</script> Green is for a number you guessed
    correctly and put in the right spot in the number array.<br/>
    <script>document.write(MakeDot("orange"));</script> Orange is for a number you guessed
    correctly, but is not in the right spot of the number array.<br/>
    <script>document.write(MakeDot("red"));</script> Red stands for a number you guessed that
    doesn't belong in the number array.<br/><br/>
</div>

<div>
Numbers:
<input type="number" min="0" max="9" maxlength="1" size="1" id="number1" autofocus>
<input type="number" min="0" max="9" maxlength="1" size="1" id="number2">
<input type="number" min="0" max="9" maxlength="1" size="1" id="number3">
<input type="number" min="0" max="9" maxlength="1" size="1" id="number4">
<input type="number" min="0" max="9" maxlength="1" size="1" id="number5">
<button id="evalBtn" onclick="Evaluate()">Evaluate</button>
</div>

<div id="results" class="results"><h2>Your Input:</h2></div>

</div>

<script>
// add enter key as trigger:
var input = [document.getElementById("number1"),
document.getElementById("number2"),
document.getElementById("number3"),
document.getElementById("number4"),
document.getElementById("number5")];
for(i=0; i<input.length; i++){
  input[i].addEventListener("keyup", function(event) {
      event.preventDefault();
      if (event.keyCode === 13) {
          document.getElementById("evalBtn").click();
      }
  });
}

// generate guessing numbers:
var goal = [];
var length = 5;
goal[0] = Math.floor(Math.random() * 10);
for(i=1; i<length; ){
  var val = Math.floor(Math.random() * 10);
  var flag = true;
  for(j=0; j<i; j++){
    if(goal[j] == val){
      flag = false;
      break;
    }
  }
  if(flag == false){
  }else{
    goal[i]=val;
    i++;
  }
}

var roundCounter = 0;


function Evaluate() {
    // check inputs for validity:
    if(CheckInputs() == false){
      return;
    }
    roundCounter++;

    // save guessed numbers:
    var guess = [];
    for(i=0; i<input.length; i++){
      guess[i] = parseInt(input[i].value);
    }

    // compare guessed numbers:
    var evaluation = [];
    for(i=0; i<guess.length; i++){
      if(guess[i] == goal[i]){
        evaluation[i] = "green";
      }else if (goal.indexOf(guess[i]) != (-1)) {
        evaluation[i] = "orange";
      }else{
        evaluation[i] = "red";
      }
    }

    // sort evaluations (skip this if easy mode)
    evaluation.sort();

    // make representing dots, check if all numbers were guessed correctly:
    var correctCount = 0;
    for(i=0; i<evaluation.length; i++){
      if(evaluation[i]=="green"){
        correctCount++;
      }
      evaluation[i] = MakeDot(evaluation[i]);
    }

    // output guesses and evaluation:
    document.getElementById("results").innerHTML += guess +
    "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;" +
    evaluation + "</br>";

    // set focus back to first number input:
    document.getElementById("number1").focus();

    // check if all numbers were guessed correctly:
    if(correctCount==length){
      document.getElementById("evalBtn").disabled = true;
      alert('Woohoo, you did it! \n Took you ' + roundCounter + ' rounds!');
    }
  }

// returns true if inputs are valid
function CheckInputs() {
  /*(Yes, I know it's risky to set them to the correct value
  at the beginning)*/
  // all fields were filled:
  var all_filled = true;
  // right ammount of characters per input:
  var num_of_chars_ok = true;
  // only number inputs:
  var only_nums = true;

  for(i=0; i<input.length; i++){
    if(input[i].value == ""){
      all_filled = false;
      break;
    }
    if(input[i].value.length > 1){
      num_of_chars_ok = false;
      break;
    }
    if(isNaN(input[i].value)){
      only_nums=false;
      break;
    }
  }

  if(all_filled == false){
    alert('You have to input five numbers');
    return false;
  }
  if(num_of_chars_ok == false){
    alert('Only one number per input field allowed');
    return false;
  }
  // will probably never be called, still better safe than sorry.
  if(only_nums == false){
    alert('You cannot use letters etc.');
    return false;
  }
  return true;
}

</script>

</body>
</html>