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Add project #565

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08e5c1c
Create calculator.txt
Jp88Programmer May 16, 2023
31d2698
Add calculator application
Jp88Programmer May 16, 2023
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128 changes: 128 additions & 0 deletions Awesome Javascript Projects_Scripts/Calculator/Calculator/index.html
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<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
body {
display: flex;
justify-content: center;
align-items: center;
flex-direction: column;
}

.container {
display: flex;
justify-content: center;
align-items: center;
flex-direction: column;
width: 20%;
display: flex;
justify-content: center;
align-items: center;
background-color: black;
padding: 20px 40px;
height: auto;


}

.calculator {
display: grid;
justify-content: center;
align-items: center;
grid-template-columns: 60px 60px 60px 90px;
margin: 15px auto;
font-size: 30px;
}

.numbers {
width: 50px;
height: 50px;
background-color: rgb(152, 152, 245);
margin: 10px 15px;
display: flex;
justify-content: center;
align-items: center;
border-radius: 50%;

}

.operator {
width: 50px;
height: 50px;
background-color: rgb(245, 152, 152);
margin: 10px 15px;
display: flex;
justify-content: center;
align-items: center;
border-radius: 50%;
}

.screen {
width: 300px;
height: 70px;
font-size: 30px;
text-align: right;
display: flex;
align-items: center;
background-color: white
}

.ac {
/* text-align: left; */
width: 50px;
height: 50px;
display: flex;
justify-content: left;
background-color: rgb(245, 0, 0);
color: white;
font-size: 23px;
border-radius: 50%;
margin: 10px 15px;
align-items: center;
justify-content: center;
align-self: flex-start;
margin: 20px 27px;
margin-bottom: -3px;
}
</style>

<title>Calculator</title>
</head>

<body>

<h1>Calculator Using Javascript</h1>
<div class="container">
<div>
<input type="text" class="screen" id="screen">
</div>
<div class="ac" id="ac">AC</div>
<div class="calculator">
<div class="numbers" id="number1" onkeypress="keypress()">1</div>
<div class="numbers" id="number2" onkeypress="keypress()">2</div>
<div class="numbers" id="number3" onkeypress="keypress()">3</div>
<div class="operator" id="+">+</div>
<div class="numbers" id="number4" onkeypress="keypress()">4</div>
<div class="numbers" id="number5" onkeypress="keypress()">5</div>
<div class="numbers" id="number6" onkeypress="keypress()">6</div>
<div class="operator" id="-">-</div>
<div class="numbers" id="number7" onkeypress="keypress()">7</div>
<div class="numbers" id="number8" onkeypress="keypress()">8</div>
<div class="numbers" id="number9" onkeypress="keypress()">9</div>
<div class="operator" id="*">*</div>
<div class="numbers" id="number.">.</div>
<div class="numbers" id="number0" onkeypress="keypress()">0</div>
<div class="operator" id="=">=</div>
<div class="operator" id="/">/</div>


</div>
</div>
<script src="index.js"></script>
</body>

</html>
175 changes: 175 additions & 0 deletions Awesome Javascript Projects_Scripts/Calculator/Calculator/index.js
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// the Calculator application to use most of devices

console.log('calculator')

// to scan all numbers and notation
let numbers = document.getElementsByClassName('numbers')
let operators = document.getElementsByClassName('operator')
let screen = document.getElementById('screen')

// any numbers click than stor numbers as string
// any numbers click than show the screen of numbers
for (const number of numbers) {

number.addEventListener('click', () => {

let num = parseInt(number.innerText)
// console.log(num, typeof (num))
screen.value += num
})

// number.addEventListener('keypress', (e) => {

// let num = parseInt(e.key)
// console.log(e.key)
// screen.value += num

// })
}

// when click operator than show operator to the screen
for (const operator of operators) {

operator.addEventListener('click', () => {

let sign = operator.innerText

if (sign === '=') {
}else {
screen.value += sign
}
// console.log(sign, typeof (sign))
})
}

let equals = document.getElementById('=')

// when click equals than event occur and opration perform
equals.addEventListener('click', () => {

let postfixStr = infixToPost(screen.value)
console.log(postfixStr)

let answer = reversePolishSolution(postfixStr)
console.log(answer, typeof (answer))
screen.value = answer
})

// precedance of operator
function priorityOfOperator (operatorSign) {
if (operatorSign === '-') {
return 1
}
else if (operatorSign === '+') {
return 1
}
else if (operatorSign === '/') {
return 3
}
else if (operatorSign === '*') {
return 4
}
}

// infix to postfix conversaion
function infixToPost (infixString) {
let stack = []
let postfixString = ''
for (let index = 0; index < infixString.length; index++) {
const element = infixString[index]

if ((element === '+') || (element === '-') || (element === '*') || (element === '/')) {
if (stack[0] === undefined) {
stack.push(element)
}else {
if (priorityOfOperator(element) > priorityOfOperator(stack[stack.length - 1])) {
stack.push(element)
}else {
while ((stack.length > 0) && (priorityOfOperator(element) <= priorityOfOperator(stack[stack.length - 1]))) {
postfixString += stack.pop()
}
stack.push(element)
}
}
}else {
postfixString += element
}
}

for (let index = stack.length - 1; index >= 0; index--) {
const element = stack[index]
postfixString += element
}

console.log(infixString, postfixString)

return postfixString
}

function reversePolishSolution (postfixString) {
stack = []
ans = 0
for (let index = 0; index < postfixString.length; index++) {
const element = postfixString[index]

if (!((element === '+') || (element === '-') || (element === '*') || (element === '/'))) {
stack.push(parseInt(element))
}else {
let num2 = stack.pop()
let num1 = stack.pop()

switch (element) {
case '+':
ans = num1 + num2
break
case '-':
ans = num1 - num2
break
case '*':
ans = num1 * num2
break
case '/':
ans = num1 / num2
break

default:
break
}
stack.push(ans)
}
}

ans = stack.pop()
console.log(ans)
return ans
}


function keypress () {
for (const number of numbers) {

// number.addEventListener('click', () => {

let num = parseInt(number.target.innerText)
// console.log(num, typeof (num))
screen.value += num

// })

}
}

document.addEventListener('keypress', (event) => {

let num = event.key
console.log(num,event.key)
screen.value += num

}, false);

let ac = document.getElementById('ac')

ac.addEventListener('click',()=>{
screen.value = ''
})

1 change: 1 addition & 0 deletions Awesome Javascript Projects_Scripts/Calculator/calculator.txt
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this is calclator which create using html and javascript logic