This is a tutorial about how to create a simple calculator program with javascript, css, and html.
First create index.html file
<html> <head> <title>Dice Simulator 2015</title> <link rel="stylesheet" href="style.css"> </head> <body> <h1>Calculator Example</h1> <p>Open the JavaScript developer console to interact.</p> <script src="calculator.js"></script> </body> </html>
Then create style.css file
* { font-family: Helvetica, Arial, sans-serif; text-align: center; }
create calculator.js file
var calculator = { sum: 0, add: function(value) { this.sum += value; }, subtract: function(value) { this.sum = this.sum - value; }, multiply: function(value) { this.sum = this.sum * value; }, divide: function(value) { this.sum = this.sum / value; }, clear: function() { this.sum = 0; }, equals: function() { return this.sum; } }
After open javascript console
Type in commands example
calculator.add(1)
calculator.add(1)
calculator.equals() // 3
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