{"id":5840,"date":"2024-01-11T16:40:00","date_gmt":"2024-01-11T16:40:00","guid":{"rendered":"https:\/\/codehim.com\/?p=5840"},"modified":"2024-01-22T14:43:31","modified_gmt":"2024-01-22T09:43:31","slug":"javascript-scientific-calculator","status":"publish","type":"post","link":"https:\/\/codehim.com\/html5-css3\/javascript-scientific-calculator\/","title":{"rendered":"JavaScript Scientific Calculator"},"content":{"rendered":"

This JavaScript code snippet helps you to create a scientific calculator<\/a> program. It comes with a simple user interface to perform exponents, log, natural log (ln), trig functions on numbers. Similarly, it can do basic mathematics including addition, subtraction, multiplication, and division.<\/p>\n

Whether you are working on an educational website template or want to make a general-purpose scientific calculator program, this code snippet might be helpful for you. You can integrate this calculator on your web project to help users to solve trigonometric functions or logarithms problems.<\/p>\n

How to Create Scientific Calculator<\/h2>\n

1. Create the HTML structure for the scientific calculator as follows:<\/p>\n

<table class=\"calculator table\">\r\n<thead>\t\t\t\r\n    <tr>\r\n        <td colspan=7>\r\n            <div class=\"output form-group\">\r\n                <input type=\"text\" class=\"ans form-control\" readonly name=\"\">\r\n            <\/div>\t\t\t\t\r\n        <\/td>\r\n    <\/tr>\r\n<\/thead>\r\n<tbody class=\"actions\">\t\t\r\n    <tr>\r\n        <td colspan=3><\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='*('>(<\/button>\t\t\t\t\r\n\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value=')'>)<\/button>\t\t\t\t\r\n\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='%'>%<\/button>\t\t\t\r\n\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='ce'>CE<\/button>\t\t\t\t\r\n\r\n        <\/td>\r\n    <\/tr>\r\n    <tr>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='inv'>Inv<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='sin'>sin<\/button>\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='ln'>ln<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn\" data-value='7'>7<\/button>\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn\" data-value='8'>8<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn\" data-value='9'>9<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='\/'>\u00f7<\/button>\t\t\t\t\r\n\r\n        <\/td>\r\n    <\/tr>\t\t\t\r\n    <tr>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='*3.14'>\u03c0<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='cos'>cos<\/button>\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='log'>log<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn\" data-value='4'>4<\/button>\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn\" data-value='5'>5<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn\" data-value='6'>6<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='*'>\t\u00d7<\/button>\r\n        <\/td>\r\n    <\/tr>\r\n\r\n    <tr>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='e'>e<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='tan'>tan<\/button>\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='radic'>\u221a<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn\" data-value='3'>3<\/button>\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn\" data-value='2'>2<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn\" data-value='1'>1<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='-'>-<\/button>\r\n        <\/td>\r\n    <\/tr>\r\n    <tr>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='exp'>EXP<\/button>\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='x^2'>x\u00b2<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='**'>x^<\/button>\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='.'>.<\/button>\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn\" data-value='0'>0<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='='>=<\/button>\t\t\t\t\r\n        <\/td>\r\n        <td>\r\n            <button class=\"btn btn-op\" data-value='+'>+<\/button>\r\n        <\/td>\r\n    <\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/pre>\n
2. After that, use the following CSS to style the calculator interface.<\/p>\n
.calculator{\r\n\tborder:2px solid #ddd;\r\n\twidth: 280px;\r\n\tbox-sizing: border-box;\r\n\tmargin: 40px auto 0;\r\n\tfont-family: verdana;\r\n}\r\n.calculator .form-control{\r\n\theight: 60px;\r\n}\r\n.calculator .form-group{\r\n\tmargin-bottom: 0;\r\n}\r\n.calculator input[type=text]{\r\n\tfont-size: 1.5rem;\r\n\tcolor:#333;\r\n}\r\n.calculator .btn {\r\n\tfont-size: 1.5rem;\r\n\tcolor:#333;\r\n\twidth: 80px;\r\n}\r\n.calculator .btn-op {\r\n\tbackground-color: #999999;\r\n}\r\n<\/pre>\n
3. Finally, add the following JavaScript code for the scientific calculator between the <script> tag<\/a> before closing the body tag and done.<\/p>\n
const actions = document.querySelector('.actions');\r\n\tconst ans = document.querySelector('.ans');\r\n\tconsole.log(actions);\r\n\tconsole.log(ans);\r\n\tlet expression = '';\r\n\tlet a=0;\r\n\tactions.addEventListener('click', (e) => {\r\n\t\tconsole.log(e.target);\r\n\t\tconst value = e.target.dataset['value'];\r\n\r\n\t\tif(value !== undefined) {\r\n\t\t\t\/\/ I'm good to go.\r\n\t\t\tif(value == 'ce') {\r\n\t\t\t\texpression = '';\r\n\t\t\t\tans.value = 0;\r\n\t\t\t\treturn true;\r\n\t\t\t}\r\n\t\t\telse if(value == 'x^2'){\r\n\t\t\t\texpression =square();\r\n\t\t\t}\r\n\t\t\t\r\n\t\t\telse if(value == 'radic'){\r\n\t\t\t\texpression = Math.sqrt(expression);\r\n\t\t\t}\r\n\t\t\telse if(value == 'log'){\r\n\t\t\t\texpression = Math.log(expression);\r\n\t\t\t}\r\n\t\t\telse if(value == 'sin'){\r\n\t\t\t\texpression = Math.sin(expression);\r\n\t\t\t}\r\n\t\t\telse if(value == 'cos'){\r\n\t\t\t\texpression = Math.cos(expression);\r\n\t\t\t}\r\n\t\t\telse if(value == 'tan'){\r\n\t\t\t\texpression = Math.tan(expression);\r\n\t\t\t}\r\n\r\n\t\t\telse if(value == '=') {\r\n\t\t\t\tconst answer = eval(expression);\r\n\t\t\t\texpression = answer;\r\n\t\t\t\t\r\n\t\t\t} else {\r\n\t\t\t\texpression += value;\r\n\t\t\t}\r\n\r\n\t\t\tif(expression == undefined) {\r\n\t\t\t\texpression = '';\r\n\t\t\t\tans.value = 0;\r\n\t\t\t} else {\r\n\t\t\t\tans.value = expression;\r\n\t\t\t}\r\n\t\t\t\/\/ expression += value;\r\n\r\n\r\n\t\t}\r\n\r\n\t});\r\n\tconst square =()=> {\r\n\t\t\treturn eval(expression*expression);\r\n\t}\r\n<\/pre>\n
That’s all! Hopefully, you have successfully integrated this scientific calculator into your project. If you have any questions or facing any issues, feel free to comment below.<\/p>\n","protected":false},"excerpt":{"rendered":"
This JavaScript code snippet helps you to create a scientific calculator program. It comes with a simple user interface to…<\/p>\n","protected":false},"author":1,"featured_media":5859,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[63],"tags":[216],"class_list":["post-5840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-html5-css3","tag-calculator"],"acf":[],"yoast_head":"\nJavaScript Scientific Calculator — CodeHim<\/title>\n<meta name=\"description\" content=\"Do you want to create a scientific calculator? well! here you will find a complete source code for JavaScript scientific calculator.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/codehim.com\/html5-css3\/javascript-scientific-calculator\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JavaScript Scientific Calculator — CodeHim\" \/>\n<meta property=\"og:description\" content=\"Do you want to create a scientific calculator? 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