Calculator

Developer
Thomas Vaeth
Size
2,959 Kb
Views
36,432
  1. Calculator Previews
  2. Calculator HTML Codes
  3. Calculator CSS Codes
  4. Calculator JS Codes

How do I make an calculator?

Calculator for FreeCodeCamp.. What is a calculator? How do you make a calculator? This script and codes were developed by Thomas Vaeth on 24 September 2022, Saturday.

Calculator Previews
IQ Test

Calculator - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Calculator</title> <link rel='stylesheet prefetch' href='https://fonts.googleapis.com/css?family=Roboto:100,400'> <link rel="stylesheet" href="css/style.css">
</head>
<body> <div class="calculator" ng-app="CalculatorApplication" ng-controller="CalculatorController"> <input type="text" class="display" ng-model="display" readonly></input> <div class="buttons"> <div class="row"> <button class="button top" ng-click="clear()">AC</button> <button class="button top" ng-click="sign()"> <sup>&plus;</sup>/<sub>&minus;</sub> </button> <button class="button top" ng-click="percent()">%</button> <button class="button operator" ng-click="setOperator('/')">&divide;</button> </div> <div class="row"> <button class="button" ng-click="number(7)">7</button> <button class="button" ng-click="number(8)">8</button> <button class="button" ng-click="number(9)">9</button> <button class="button operator" ng-click="setOperator('*')">&times;</button> </div> <div class="row"> <button class="button" ng-click="number(4)">4</button> <button class="button" ng-click="number(5)">5</button> <button class="button" ng-click="number(6)">6</button>	<button class="button operator" ng-click="setOperator('-')">&minus;</button> </div> <div class="row"> <button class="button" ng-click="number(1)">1</button> <button class="button" ng-click="number(2)">2</button>	<button class="button" ng-click="number(3)">3</button> <button class="button operator" ng-click="setOperator('+')">&plus;</button> </div> <div class="row">	<button class="button double" ng-click="number(0)">0</button> <button class="button decimal" ng-click="number('.')">.</button> <button class="button operator equal" ng-click="setOperator('=')">&equals;</button> </div> </div>	</div> <script src='https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.8/angular.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Calculator - Script Codes CSS Codes

/* Background image */
body {	background-image: url('http://cdn.backgroundhost.com/backgrounds/subtlepatterns/retina_wood.png');
}
/* Chrome blue outline */
button:focus {	outline: 0;
}
/* Common properties */
.calulator,
.display,
.button {	cursor: pointer;
}
.display,
.button {	font-family: 'Roboto', Helvetica, sans-serif; font-weight: 100; border: 0;
}
/* Main div */
.calculator {	position: absolute;	top: 0;	right: 0;	bottom: 0;	left: 0;	margin: auto;	height: 316px;	width: 228px;	background: #000000;
}
/* Display calculation */
.display {	box-sizing: border-box;	display: block;	width: inherit;	margin-top: 28px;	padding: 0 10px;	background: #000000; color: #FFFFFF; font-size: 45px; text-align: right;
}
/* All buttons */
.button {	height: 47px;	width: 57px;	float: left;	padding: 2px 0 3px 0;	background: #E0E0E0; font-size: 22px;
}
.button:active {	background: #BABABA;
}
/* Top row - Clear, sign, percentage */
.top {	background: #D6D6D6;
}
.top:active {	background: #B0B0B0;
}
/* Right column - All operators */
.operator {	background: #FF8C00;	color: #FFFFFF;	font-size: 28px;
}
.operator:active {	background: #B36200;
}
/* Decimal was too small */
.decimal {	font-weight: 400;
}
/* Adding border radius */
.calculator {	border-radius: 6px;
}
.equal {	border-bottom-right-radius: 6px;
}
.double {	width: 114px;	border-bottom-left-radius: 6px;
}

Calculator - Script Codes JS Codes

var app = angular.module('CalculatorApplication', []);
app.controller('CalculatorController', ['$scope', function($scope) {	var previousNum = 0;	var previousOp = false;	$scope.clear = function() {	$scope.display = '0';	$scope.operator = false;	previousNum = '0';	previousOp = false;	}	$scope.sign = function() {	$scope.display = parseFloat($scope.display) * -1;	}	$scope.percent = function() {	$scope.display = parseFloat($scope.display) / 100;	}	$scope.setOperator = function(operation) {	var current = parseFloat($scope.display);	var previous = parseFloat(previousNum);	if (previousOp === '/') {	current = previous / current;	} else if (previousOp === '*') {	current *= previous;	} else if (previousOp === '-') {	current = previous - current;	} else if (previousOp === '+') {	current += previous;	}	previousNum = current;	$scope.display = current;	$scope.operator = operation;	previousOp = false;	}	$scope.number = function(num) {	if ($scope.operator) {	previousNum = $scope.display;	$scope.display = '';	previousOp = $scope.operator;	$scope.operator = false;	}	if (num === '.' && $scope.display.indexOf('.') !== -1) {	return;	}	if ($scope.display === '0') {	$scope.display = '';	}	$scope.display += num;	}	$scope.clear();
}]);
Calculator - Script Codes
Calculator - Script Codes
Home Page Home
Developer Thomas Vaeth
Username thomasvaeth
Uploaded September 24, 2022
Rating 3
Size 2,959 Kb
Views 36,432
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