Created
March 5, 2023 08:25
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hackerrang binary calculator solution.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <link rel="stylesheet" href="css/binaryCalculator.css" type="text/css"> | |
| <meta charset="utf-8"> | |
| <title>Binary Calculator</title> | |
| </head> | |
| <body> | |
| <div id="res"></div> | |
| <div id="btns"> | |
| <button id="btn0" onclick="clickZero()">0</button> | |
| <button id="btn1" onclick="clickOne()">1</button> | |
| <button id="btnClr" onclick="clickClear()">C</button> | |
| <button id="btnEql" onclick="clickEql()">=</button> | |
| <button id="btnSum" onclick="clickSum()">+</button> | |
| <button id="btnSub" onclick="clickSub()">-</button> | |
| <button id="btnMul" onclick="clickMul()">*</button> | |
| <button id="btnDiv" onclick="clickDiv()">/</button> | |
| </div> | |
| <script src="js/binaryCalculator.js" type="text/javascript"></script> | |
| </body> | |
| </html> |
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| const display = document.getElementById('res'); | |
| const btns = document.getElementById('btns') | |
| let inputValue = ""; | |
| let regexForExeptSigns = /[+\-*/]/; | |
| let operation = ""; | |
| btns.addEventListener('click',handler) | |
| function handler(event) { | |
| let sign = event.target.innerText; | |
| if (sign === '0' || sign === '1') inputValue += sign; | |
| if ((sign === '+' || | |
| sign === '-' || | |
| sign === '*' || | |
| sign === '/')&& | |
| !inputValue.match(regexForExeptSigns) | |
| ){ | |
| inputValue += sign; | |
| operation = sign; | |
| } | |
| if(sign === 'C') inputValue = ""; | |
| if(sign === '=') calculate() | |
| displayInput(); | |
| } | |
| //calculating the result | |
| function calculate(){ | |
| let [firstBin,secondBin] = inputValue.split(regexForExeptSigns); | |
| let result = getResult(firstBin,secondBin).toString(2) | |
| inputValue = result; | |
| }; | |
| function getResult(first,second){ | |
| if(operation === '+') return BigInt('0b' + first) + BigInt('0b' + second); | |
| if(operation === '-') return BigInt('0b' + first) - BigInt('0b' + second); | |
| if(operation === '*') return BigInt('0b' + first) * BigInt('0b' + second); | |
| if(operation === '/') return BigInt('0b' + first) / BigInt('0b' + second); | |
| } | |
| //displaying an input string | |
| function displayInput(){ | |
| display.innerText = inputValue | |
| } |
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| body{ | |
| width:33%; | |
| } | |
| #res{ | |
| background-color:lightgray; | |
| border:solid; | |
| height:48px; | |
| font-size:20px; | |
| } | |
| #btn0,#btn1{ | |
| background-color:lightgreen; | |
| color:brown; | |
| } | |
| #btnClr,#btnEql{ | |
| background-color:darkgreen; | |
| color:white; | |
| } | |
| #btnSum,#btnSub,#btnMul,#btnDiv{ | |
| background-color:black; | |
| color:red; | |
| } | |
| button{ | |
| width:25%; | |
| height:36px; | |
| font-size:18px; | |
| margin:0px; | |
| float:left; | |
| } | |
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