JavaScript How to give a card a numerical value when making a simple card game (Javascript)

Apologies if this sounds totally stupid but I'm a total dunce when it comes to coding! I'm trying to make a higher or lower guessing game using a deck of cards (i.e. The player guesses if the next card will be higher or lower than the one shown) but I don't really understand how to give each individual card a value.

For example I want to give the Ace card a value of "1" so then the person can guess if the next card will be higher or lower than 1.

I know arrays & classes are involved but I can't seem to find a tutorial that explains it in plain English. Here's my code so far (& yes I know it's dreadful!)

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Untitled</title>
<script language="javascript" type="text/javascript">


var ask=window.confirm("Do you understand the rules of Higher or Lower?")
if (ask)
window.alert("Lets go!")
else
window.alert("Guess if the next card shown will be higher or lower than the current card.")

function rollDice()
{
var diceArray = ["card0.jpg","card1.jpg","card2.jpg","card3.jpg","card4.jpg","card5.jpg"];
var pickCard = diceArray[Math.floor(Math.random() * diceArray.length)];
document.getElementById("cards").src = pickCard;
}


</script>
<link rel="stylesheet" target='_blank' href="teststyle.css" type="text/css">
</head>
<body style="text-align: center;">
<br>
<big style="font-weight: bold; font-family: Helvetica,Arial,sans-serif;"><big><big>HIGHER
OR LOWER?</big></big></big><br>
<h3>Use your knowledge of probability to guess if the next card will be
higher or lower!</h3>
<br>
<br>
<img src="card5.jpg" onload="pickCard()" id="cards"><br>
<br>
<span
style="font-weight: bold; font-family: Helvetica,Arial,sans-serif;">VALUES</span><span
style="font-family: Helvetica,Arial,sans-serif;">: ACE, TWO, THREE,
FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN, JACK, QUEEN, KING</span><br>
<br>
<br>

</body>
</html>

Answer:1

really depends on your situation but there are a few ways you could do it. There isn't a "right" way I don't think.

You could use a switch statement, but I think the more "javascript way" is you an object literal that maps your values like

  var cardValues = {
      "ace": 1,
      "king": 13,
      "queen": 12
  }

  //then you can get your card value from the 'name' very simply
  var value = cardValues["ace"] // => 1

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