<title>Faluty Calculator</title>
<div id="main">
<div id="display"><h1 id="result"></h1></div>
<section id="key-holder">
<button class="keys">1</button>
<button class="keys">2</button>
<button class="keys">3</button>
<button class="keys">4</button>
<button class="keys">5</button>
<button class="keys">6</button>
<button class="keys">7</button>
<button class="keys">8</button>
<button class="keys">9</button>
<button class="keys">0</button>
<button class="keys">.</button>
<button class="keys" id="equals">=</button>
<button class="keys operator">+</button>
<button class="keys operator">/</button>
<button class="keys operator">*</button>
<button class="keys operator">-</button>
<button class="keys operator" id="clear">C</button>
</section>
</div>
</body>
<style>
#clear{margin-right: 68%;}
#display{
display: flex;overflow:auto;
align-items: center;
justify-content: center;font-size: 1.5;color:wheat}
h1{
margin-bottom:0px}
*{
font-family:'Lucida Sans'}
body{
background:radial-gradient(black,black);
margin:0px;padding:0pc;display: flex;flex-direction: column;align-items: center;
height:100dvh;}
#main{
width:30%;
height:90%;
margin-top:2%;
background-image:url(GlassMorphicBackground.jpg);
background-position: center;
background-repeat: no-repeat;
background-size: cover;
border-radius: 20px;
display: flex;flex-direction: column;align-items: center;}
#display{
width:95%;
height:25%;
background-color: rgba(128, 128, 128, 0.4);
margin-top:5%;
margin-bottom:5%;}
#key-holder{
width:95%;
height:70%;
display: flex;
justify-content: center;
gap:10px;margin-top:1%;margin-bottom:1%;
flex-wrap: wrap;}
.keys{
width:20%;
background-color: rgba(255,255,255,0.2);
color:white;font-size: 2em;
display: flex;
align-items: center;
justify-content: center;border:none;
transform: all 0.2s ease;}
.operator{
background:rgba(248, 121, 1, 0.7 )}
.keys:hover{
scale: 1.1;
border-radius: 10px;
background-color: rgba(255,255,255,0.5);
color:black;font-weight: bold;
}.operator:hover{
background:orange}
</style>
<script>
let buttons = document.querySelectorAll('button')
let display = document.getElementById('result')
let equal = document.getElementById('equals')
let randomNum;
console.log(buttons);
buttons.forEach(element => {
if(element.innerHTML == '='){console.log('ijikul');}
else if(element.innerHTML == 'C'){element.addEventListener('click',()=>{result.innerHTML = ''});}
else{
element.addEventListener('click',()=>{result.innerText+=element.innerHTML;})}
});
equal.addEventListener('click',()=>{
randomNum = Math.round(Math.random()*10)
console.log(randomNum);
try{
final = eval(display.innerHTML);
display.innerHTML = final
}
catch(error){
display.innerText = ''
}
if(final=='Infinity'){display.innerText = 'Not defined'}
if(randomNum==5 || randomNum==4){
display.innerText = Math.round(Math.random()*final)
}
})
</script>
</html>function calculate(number1,number2,operator){
if (!number1 || !number2){
return "Invalid number"
}
if (!['*','-','/','+'].includes(operator)){
return "Invalid operator"
}
switch(operator){
case "+":
return number1 + number2;
case "/":
return number1 * number2;
case "*":
return number1 * number2;
case "-":
return number1 - number2;
}
}
console.log(calculate(5,6,"+"))<!-- Create a simple Program to build the Calculator in JavaScript using with HTML and CSS web languages. -->
<!DOCTYPE html>
<html lang = "en">
<head>
<title> JavaScript Calculator </title>
<style>
h1 {
text-align: center;
padding: 23px;
background-color: skyblue;
color: white;
}
#clear{
width: 270px;
border: 3px solid gray;
border-radius: 3px;
padding: 20px;
background-color: red;
}
.formstyle
{
width: 300px;
height: 530px;
margin: auto;
border: 3px solid skyblue;
border-radius: 5px;
padding: 20px;
}
input
{
width: 20px;
background-color: green;
color: white;
border: 3px solid gray;
border-radius: 5px;
padding: 26px;
margin: 5px;
font-size: 15px;
}
#calc{
width: 250px;
border: 5px solid black;
border-radius: 3px;
padding: 20px;
margin: auto;
}
</style>
</head>
<body>
<h1> Calculator Program in JavaScript </h1>
<div class= "formstyle">
<form name = "form1">
<!-- This input box shows the button pressed by the user in calculator. -->
<input id = "calc" type ="text" name = "answer"> <br> <br>
<!-- Display the calculator button on the screen. -->
<!-- onclick() function display the number prsses by the user. -->
<input type = "button" value = "1" onclick = "form1.answer.value += '1' ">
<input type = "button" value = "2" onclick = "form1.answer.value += '2' ">
<input type = "button" value = "3" onclick = "form1.answer.value += '3' ">
<input type = "button" value = "+" onclick = "form1.answer.value += '+' ">
<br> <br>
<input type = "button" value = "4" onclick = "form1.answer.value += '4' ">
<input type = "button" value = "5" onclick = "form1.answer.value += '5' ">
<input type = "button" value = "6" onclick = "form1.answer.value += '6' ">
<input type = "button" value = "-" onclick = "form1.answer.value += '-' ">
<br> <br>
<input type = "button" value = "7" onclick = "form1.answer.value += '7' ">
<input type = "button" value = "8" onclick = "form1.answer.value += '8' ">
<input type = "button" value = "9" onclick = "form1.answer.value += '9' ">
<input type = "button" value = "*" onclick = "form1.answer.value += '*' ">
<br> <br>
<input type = "button" value = "/" onclick = "form1.answer.value += '/' ">
<input type = "button" value = "0" onclick = "form1.answer.value += '0' ">
<input type = "button" value = "." onclick = "form1.answer.value += '.' ">
<!-- When we click on the '=' button, the onclick() shows the sum results on the calculator screen. -->
<input type = "button" value = "=" onclick = "form1.answer.value = eval(form1.answer.value) ">
<br>
<!-- Display the Cancel button and erase all data entered by the user. -->
<input type = "button" value = "Clear All" onclick = "form1.answer.value = ' ' " id= "clear" >
<br>
</form>
</div>
</body>
</html> <!-- Create a simple Program to build the Calculator in JavaScript using with HTML and CSS web languages. -->
<!DOCTYPE html>
<html lang = "en">
<head>
<title> JavaScript Calculator </title>
<style>
h1 {
text-align: center;
padding: 23px;
background-color: skyblue;
color: white;
}
#clear{
width: 270px;
border: 3px solid gray;
border-radius: 3px;
padding: 20px;
background-color: red;
}
.formstyle
{
width: 300px;
height: 530px;
margin: auto;
border: 3px solid skyblue;
border-radius: 5px;
padding: 20px;
}
input
{
width: 20px;
background-color: green;
color: white;
border: 3px solid gray;
border-radius: 5px;
padding: 26px;
margin: 5px;
font-size: 15px;
}
#calc{
width: 250px;
border: 5px solid black;
border-radius: 3px;
padding: 20px;
margin: auto;
}
</style>
</head>
<body>
<h1> Calculator Program in JavaScript </h1>
<div class= "formstyle">
<form name = "form1">
<!-- This input box shows the button pressed by the user in calculator. -->
<input id = "calc" type ="text" name = "answer"> <br> <br>
<!-- Display the calculator button on the screen. -->
<!-- onclick() function display the number prsses by the user. -->
<input type = "button" value = "1" onclick = "form1.answer.value += '1' ">
<input type = "button" value = "2" onclick = "form1.answer.value += '2' ">
<input type = "button" value = "3" onclick = "form1.answer.value += '3' ">
<input type = "button" value = "+" onclick = "form1.answer.value += '+' ">
<br> <br>
<input type = "button" value = "4" onclick = "form1.answer.value += '4' ">
<input type = "button" value = "5" onclick = "form1.answer.value += '5' ">
<input type = "button" value = "6" onclick = "form1.answer.value += '6' ">
<input type = "button" value = "-" onclick = "form1.answer.value += '-' ">
<br> <br>
<input type = "button" value = "7" onclick = "form1.answer.value += '7' ">
<input type = "button" value = "8" onclick = "form1.answer.value += '8' ">
<input type = "button" value = "9" onclick = "form1.answer.value += '9' ">
<input type = "button" value = "*" onclick = "form1.answer.value += '*' ">
<br> <br>
<input type = "button" value = "/" onclick = "form1.answer.value += '/' ">
<input type = "button" value = "0" onclick = "form1.answer.value += '0' ">
<input type = "button" value = "." onclick = "form1.answer.value += '.' ">
<!-- When we click on the '=' button, the onclick() shows the sum results on the calculator screen. -->
<input type = "button" value = "=" onclick = "form1.answer.value = eval(form1.answer.value) ">
<br>
<!-- Display the Cancel button and erase all data entered by the user. -->
<input type = "button" value = "Clear All" onclick = "form1.answer.value = ' ' " id= "clear" >
<br>
</form>
</div>
</body>
</html> 5-6=
java script calculatorconst keys = document.querySelector('.calculator-keys');
keys.addEventListener('click', (event) => {
// Access the clicked element
const { target } = event;
// Check if the clicked element is a button.
// If not, exit from the function
if (!target.matches('button')) {
return;
}
if (target.classList.contains('operator')) {
console.log('operator', target.value);
return;
}
if (target.classList.contains('decimal')) {
console.log('decimal', target.value);
return;
}
if (target.classList.contains('all-clear')) {
console.log('clear', target.value);
return;
}
console.log('digit', target.value);
});// Function to ask for the operation
function getOperation() {
const operation = prompt("Choose an operation: +, -, *, /");
return operation;
}
// Function to ask for numbers
function getNumbers() {
const num1 = parseFloat(prompt("Enter first number:"));
const num2 = parseFloat(prompt("Enter second number:"));
return { num1, num2 };
}
// Perform the calculation based on the operation
function calculate(operation, num1, num2) {
switch (operation) {
case '+':
return num1 + num2;
case '-':
return num1 - num2;
case '*':
return num1 * num2;
case '/':
// Check for division by zero
if (num2 === 0) {
return "Cannot divide by zero";
}
return num1 / num2;
default:
return "Invalid operation";
}
}
// Main function to run the calculator
function runCalculator() {
const operation = getOperation();
const { num1, num2 } = getNumbers();
const result = calculate(operation, num1, num2);
alert(`Result: ${result}`);
}
// Run the calculator
runCalculator();