Calculator

Developer
Size
4,572 Kb
Views
6,072

How do I make an calculator?

Calculator for Free Code Camp using JQuery. What is a calculator? How do you make a calculator? This script and codes were developed by Adam on 28 November 2022, Monday.

Calculator Previews

Calculator - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Calculator </title> <link href="https://fonts.googleapis.com/css?family=Archivo+Black|Orbitron" rel="stylesheet"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css"> <link rel="stylesheet" href="css/style.css">
</head>
<body> <div> <div class="calc"> <div class="row"> <div class="title">KASIO</div> <div class="solar"> <div></div> <div></div> <div></div> <div></div> </div> <div class="info">Calculator</div> </div> <div class="wrap"> <div class="back-numbers">.00000000</div> <div class="back-numbers2">000000000000000000</div> <div class="screen display">0</div> <div class="screen calc-display"></div> </div> <div class="row"> <button data-key="ac" class="utility">AC</button> <button data-key="c" class="utility">C</button> <button data-key="ce" class="ce">CE</button> <button data-key="%" class="operator">%</button> </div> <div class="row"> <button data-key="7">7</button> <button data-key="8">8</button> <button data-key="9">9</button> <button data-key="/" class="operator">&divide;</button> </div> <div class="row"> <button data-key="4">4</button> <button data-key="5">5</button> <button data-key="6">6</button> <button data-key="*" class="operator">X</button> </div> <div class="row"> <button data-key="1">1</button> <button data-key="2">2</button> <button data-key="3">3</button> <button data-key="-" class="operator">-</button> </div> <div class="row"> <button data-key="0">0</button> <button data-key=".">.</button> <button data-key="=" class="operator">=</button> <button data-key="+" class="operator">+</button> </div> </div> <div class="flip-button">Flip</div>
</div> <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Calculator - Script Codes CSS Codes

html { font-size: 20px;
}
body { display: flex; justify-content: center; margin-top: 60px; background-color: #333333; color: white; font-family: 'Archivo Black', sans-serif;
}
.calc { width: 300px; height: 450px; display: flex; flex-direction: column; justify-content: space-around; align-items: center; background: #324159; background: linear-gradient(to bottom right, #324159, #253041); border-radius: 25px; box-shadow: 5px 5px 5px #111111;
}
.row { display: flex; justify-content: space-around; align-items: center; width: 260px; height: 60px;
}
.title { padding-right: 10px; font-size: 1rem; text-shadow: 2px 2px 3px #111111;
}
.info { padding-left: 10px; font-size: 0.8rem; text-shadow: 2px 2px 3px #111111;
}
.solar { display: flex; width: 80px; height: 20px; background-color: #001a00; border-radius: 5px; border: 2px solid black; box-shadow: 2px 2px 0px #253041;
}
.solar > div { width: 20px; height: 20px; border-left: 2px solid black;
}
.solar > div:first-child { border-left: none;
}
.wrap { position: relative; font-family: 'Orbitron', sans-serif; font-size: 30px;
}
.back-numbers { position: absolute; color: rgba(0, 0, 0, 0.05); top: 6px; left: 32px;
}
.back-numbers2 { position: absolute; color: rgba(0, 0, 0, 0.05); top: 50px; left: 17px; font-size: 0.8rem;
}
.screen { display: flex; justify-content: flex-end; text-align: center; height: 30px; width: 250px; padding: 2px 3px; background-color: #bbccbc; color: black; border: 5px solid #253041; border-radius: 8px;
}
.calc-display { display: flex; justify-content: flex-end; align-items: flex-end; margin-top: -7px; margin-bottom: 15px; font-size: 0.8rem; border-top: none; border-radius: 0 0 10px 10px;
}
button { height: 46px; width: 56px; color: white; background-color: #AAAAAA; font-weight: bold; font-size: 1.4rem; font-family: 'gotham rounded', sans-serif; text-shadow: 1px 1px 3px #111111; border-width: 2px 3px 3px 2px; border-color: #999999; border-radius: 10px 10px 20px 20px; cursor: pointer;
}
.utility { background-color: #ed4964; border-color: #a50d30; font-size: 1.3rem;
}
.operator { background-color: #222222; border-color: #444444;
}
.ce { background-color: #68cc9b; border-color: #39ac75; font-size: 1.3rem;
}
.flip { transform: rotate(180deg);
}
.flip-button { width: 100px; margin: 15px 0 0 100px; background: red; text-shadow: 1px 1px 3px #111111; border-width: 2px 3px 3px 2px; border-color: #999999; border-radius: 10px 10px 10px 10px; font-weight: bold; font-size: 1.4rem; font-family: 'gotham rounded', sans-serif; text-align: center; cursor: pointer;
}

Calculator - Script Codes JS Codes

/* JQuery calculator with flip button to write school kid messages*/
$(document).ready(function() { var answer = 0; //Store expression var exp = ""; //Operator array and function to check if user input is an operator var operators = ["+", "-", "*", "/", "%", "="]; function opCheck(input) { for (var i = 0; i < operators.length; i++) { if (input === operators[i]) { return true; } } } //Power On/Off Function var powerOn = false; function power() { if (powerOn === true) { $('.display').text(""); $('.calc-display').text(""); $('button').attr("disabled", true); $("button[data-key='ac']").removeAttr("disabled"); exp = ""; powerOn = false; } else if (powerOn === false) { $('.display').text("0"); $('.calc-display').text(""); $('button').removeAttr("disabled"); exp = "" powerOn = true; } } //Clear function function clear() { $('.display').text("0"); $('.calc-display').text(""); exp = ""; } // Check if input is valid based on previous selection function inputCheck() { var input = $(this).data("key"); //Check power if (input === "ac") { return; } //Check clear if (input === "c") { clear(); return; } //Check delete if (input === "ce") { exp = exp.substring(0, exp.length - 1); $('.calc-display').text(exp); $('.display').text("0"); return; } //Check expression length if (exp.length > 17) { exp = exp.substring(0, exp.length - 1); } //Prevent consecutive operators if (opCheck(input)) { if (opCheck(exp[exp.length - 1])) { exp = exp.substring(0, exp.length - 1) } } //Add input to expression exp += input; //Check if first entry is decimal and prevent multiple decimal points if (exp[0] === ".") { exp = "0."; } if (input === ".") { if (exp.substring(0, exp.length - 1).includes(".")) { exp = exp.substring(0, exp.length - 1); } } //enable operators after a number if (opCheck(exp[0])) { clear(); } //Check and perform percentage calculation if (input === "%") { exp = exp.substring(0, exp.length - 1) answer = eval(exp) / 100; $('.display').text(answer); $('.calc-display').text(exp); exp = ""; return; } //Update displays $('.display').text(exp[exp.length - 1]); $('.calc-display').text(exp); //Return answer and reduce length if needed if (input === "=") { exp = exp.substring(0, exp.length - 1) answer = eval(exp); if (answer.toString().length > 10) { answer = answer.toString().substring(0, 10) } $('.display').text(answer); exp = ""; } } function flip() { $(".calc").toggleClass('flip'); } //Event handlers $(".flip-button").click(flip); $("button").click(inputCheck); $("button[data-key='ac']").click(power);
});
Calculator - Script Codes
Calculator - Script Codes
Home Page Home
Developer Adam
Username rzencoder
Uploaded November 28, 2022
Rating 3
Size 4,572 Kb
Views 6,072
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