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Roman_Numeral_Conversion.html
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Roman_Numeral_Conversion.html
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<!DOCTYPE html>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<!-- GooglE fonts -->
<link href="https://fonts.googleapis.com/css?family=Quicksand" rel="stylesheet">
<link rel="stylesheet" href="style.css">
<title>Roman Numeral Conversion</title>
</head>
<style>
body{
margin: 0px auto;
padding: 0px auto;
box-sizing: border-box;
font-size: 10px;
font-family: cursive;
background-color: #97a5ff;
}
.main{
display: flex;
flex-direction: column;
align-items: center;
/*justify-content: center;*/
padding: 10px;
}
h1{
font-size: 2rem;
color: #fff;
}
input{
outline: 0;
width: 50vw;
margin: 10px 0;
height: 50px;
padding: 5px;
padding-left: 20px;
border-style: none;
border-radius: 5px;
background: rgba(35, 35, 35, 0.4);
font-size: 1.5rem;
color:ghostwhite;
text-align: center;
font-family: cursive;
}
::placeholder{
color: #fff;
}
@media(max-width: 500px) {
body{
padding-top: 20px;
}
h1{
font-size: 2rem;
}
input{
width: 70vw;
font-size: 2rem;
}
}
</style>
<body>
<div class="main">
<h1>ROMAN NUMERAL CONVERTER</h1>
<!-- arbic input -->
<input id="arabicInput" type="text" name="arabic" placeholder="Enter an arabic number....">
<!-- roman input -->
<input id="romanInput" type="text" name="roma" value="" placeholder="Enter a roman number....">
</div>
<div style="margin-top: 40px;text-align:center;font-size:20px;">
<div class="made-with">
<h4 class="color" style="color:white;font-family: cursive;">Made with ❤️ by <a href="https://github.com/mixstam1821" style="color:white;font-family: cursive;">Michael Stamatis</a></h4>
</div>
</div>
<script>
const arabicInput = document.getElementById("arabicInput");
const romanInput = document.getElementById("romanInput");
arabicInput.addEventListener("input",(e)=>{
romanInput.value = arabicToRoman(e.target.value);
});
romanInput.addEventListener("input",(e)=>{
arabicInput.value = romanToArabic(e.target.value);
});
function arabicToRoman(number){
let roman = "";
const romanNumList = {M:1000,CM:900, D:500,CD:400, C:100, XC:90,L:50, XV: 40, X:10, IX:9, V:5, IV:4, I:1};
let a;
if(number > 3999)
return "Enter a number between 1 and 3999";
else{
for(let key in romanNumList){
a = Math.floor(number / romanNumList[key]);
if(a >= 0){
for(let i = 0; i < a; i++){
roman += key;
}
}
number = number % romanNumList[key];
}
}
return roman;
}
function romanToArabic(romanNumber){
romanNumber = romanNumber.toUpperCase();
const romanNumList = ["CM","M","CD","D","XC","C","XL","L","IX","X","IV","V","I"];
const corresp = [900,1000,400,500,90,100,40,50,9,10,4,5,1];
let index = 0, num = 0;
for(let rn in romanNumList){
index = romanNumber.indexOf(romanNumList[rn]);
while(index != -1){
num += parseInt(corresp[rn]);
romanNumber = romanNumber.replace(romanNumList[rn],"-");
index = romanNumber.indexOf(romanNumList[rn]);
}
}
return num;
}
</script>
</body>
</html>