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HTML/CSS/Javascript Slot Machine How would you implement a slot machine where we have three slots with...

HTML/CSS/Javascript Slot Machine

How would you implement a slot machine where we have three slots with 7 images? You have a spin function so the slots randomizes. You also start off with $50 and can bet fron $1 $5 or $10. If the user wins then the earnings will be: 15*betAmount.
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Answer #1

Solution:

<!DOCTYPE html>
<!--
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->
<html>
<head>
<title>Spinning Machine</title>
<link rel="stylesheet" type = "text/css" href = "active.css" />
<meta charset="windows-1252">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
  
<script>
/*
*
* Handling events
* using javascript
*
*/
var bet = 0;
var balance = 50; //set initial balance amount to $50
  
/*
*
* spin the slots
*
*/
function spin() {
if(bet === 0){
alert("Please select a bet amout !!!");
}
else if(balance < bet){
alert("You dont have sufficient balance amout to bet !!!");
}
else{
document.getElementById("slot1").src = 'spin.gif';
document.getElementById("slot2").src = 'spin.gif';
document.getElementById("slot3").src = 'spin.gif';
setTimeout('setNew()', 1000);
}
}
/*
* Changing images
*
*/
function setNew(){
var r1 = Math.random();
r1 = Math.floor(r1 * 10);
r1 %= 8;
if(r1 < 1)
r1 = 1;
// console.log(r1);
document.getElementById("slot1").src = 'img' + r1 + '.jpg';
  
var r2 = Math.random();
r2 = Math.floor(r2 * 10);
r2 %= 8;
if(r2 < 1)
r2 = 1;
// console.log(r2);
document.getElementById("slot2").src = 'img' + r2 + '.jpg';
  
var r3 = Math.random();
r3 = Math.floor(r3 * 10);
r3 %= 8;
if(r3 < 1)
r3 = 1;
//.log(r3);
document.getElementById("slot3").src = 'img' + r3 + '.jpg';
  
if(r1 === r2 && r2 === r3){
balance += (bet * 15);
}
else{
balance -= bet;
}
  
document.getElementById("balance").innerHTML = "<b>Balance $" + balance + "</b>";
}
  
/*
* handling bet for $1 button press
*/
function b1Clicked(){
document.getElementById("bet1").disabled = true;
document.getElementById("bet2").disabled = false;
document.getElementById("bet3").disabled = false;
bet = 1;
}
  
/*
* handling bet for $5 button press
*/
function b2Clicked(){
document.getElementById("bet1").disabled = false;
document.getElementById("bet2").disabled = true;
document.getElementById("bet3").disabled = false;
bet = 5;
}
  
/*
* handling bet for $10 button press
*/
function b3Clicked(){
document.getElementById("bet1").disabled = false;
document.getElementById("bet2").disabled = false;
document.getElementById("bet3").disabled = true;
bet = 10;
}
</script>
  
</head>
<body>
<table border='1px'>
<tr>
<td>
<img id="slot1" src="img2.jpg" height="500" width="300">
</td>
<td>
<img id="slot2" src="img5.jpg" height="500" width="300">
</td>
<td>
<img id="slot3" src="img6.jpg" height="500" width="300">
</td>
<td>
<label id="balance"><b>Balance : $50</b></label>
<br><br><br><br>

<button id = "bet1" onclick="b1Clicked()"><b>Bet for $1</b></button>
<br>
<br>
<button id = "bet2" onclick="b2Clicked()"><b>Bet for $5</b></button>
<br>
<br>
<button id = "bet3" onclick="b3Clicked()"><b>Bet for $10</b></button>
<br>
<br>
<br>
<br>
<button onclick="spin()"><b>Spin It</b></button>
</td>
</tr>
</table>
</body>
</html>

Code screenshot:

Sample run output:

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