{"id":145720,"date":"2025-07-02T11:17:38","date_gmt":"2025-07-02T05:47:38","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=145720"},"modified":"2025-07-02T11:17:38","modified_gmt":"2025-07-02T05:47:38","slug":"sales-data-analysis-using-javascript","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/sales-data-analysis-using-javascript\/","title":{"rendered":"JavaScript Project &#8211; Sales Data Analysis"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">const db = require('.\/db');\r\nconst readline = require('readline');\r\n\r\nconst rl = readline.createInterface({\r\n  input: process.stdin,\r\n  output: process.stdout\r\n});\r\n\r\nfunction showMenu() {\r\n  console.log(\"\\n ------- Sales Data Analysis --------\");\r\n  console.log(\"1. Add Customer\");\r\n  console.log(\"2. Add Product\");\r\n  console.log(\"3. Add Sales Transaction\");\r\n  console.log(\"4. Total Sales by Product\");\r\n  console.log(\"5. Total Sales by Customer\");\r\n  console.log(\"6. Monthly Sales Summary\");\r\n  console.log(\"7. Top Selling Products\");\r\n  console.log(\"8. Sales by Region\");\r\n  console.log(\"9. Average Sale per Transaction\");\r\n  console.log(\"0. Exit\");\r\n  console.log(\"------------------------------------------\")\r\n  rl.question(\"Choose an option: \", handleChoice);\r\n}\r\n\r\nasync function handleChoice(choice) {\r\n  switch (choice.trim()) {\r\n    case '1':\r\n      rl.question(\"Customer ID: \", id =&gt; {\r\n        rl.question(\"Name: \", name =&gt; {\r\n          rl.question(\"Region: \", async region =&gt; {\r\n            await db.execute(\"INSERT INTO customers VALUES (?, ?, ?)\", [id,name,region]);\r\n            console.log(\"Customer added.\");\r\n            showMenu();\r\n          });\r\n        });\r\n      });\r\n      break;\r\n\r\n    case '2':\r\n      rl.question(\"Product ID: \", id =&gt; {\r\n        rl.question(\"Name: \", name =&gt; {\r\n          rl.question(\"Price: \", async price =&gt; {\r\n            await db.execute(\"INSERT INTO products VALUES (?, ?, ?)\", [id, name, price]);\r\n            console.log(\"Product added.\");\r\n            showMenu();\r\n          });\r\n        });\r\n      });\r\n      break;\r\n\r\n    case '3':\r\n      rl.question(\"Transaction ID: \", id =&gt; {\r\n        rl.question(\"Customer ID: \", customerId =&gt; {\r\n          rl.question(\"Product ID: \", productId =&gt; {\r\n            rl.question(\"Quantity: \", quantity =&gt; {\r\n              rl.question(\"Date (YYYY-MM-DD): \", async date =&gt; {\r\n                await db.execute(\"INSERT INTO sales VALUES (?, ?, ?, ?, ?)\", [id, customerId, productId, quantity, date]);\r\n                console.log(\"Transaction added.\");\r\n                showMenu();\r\n              });\r\n            });\r\n          });\r\n        });\r\n      });\r\n      break;\r\n    \/\/Total Sales by Product\r\n    case '4': {\r\n      const [rows] = await db.query(`\r\n        SELECT p.product_name, SUM(s.quantity * p.price) AS total_sales\r\n        FROM sales s\r\n        JOIN products p ON s.product_id = p.product_id\r\n        GROUP BY s.product_id\r\n        ORDER BY total_sales DESC\r\n      `);\r\n      console.log(\"\\n Total Sales by Product:\");\r\n      rows.forEach(r =&gt; console.log(`${r.product_name} - \u20b9${Number(r.total_sales).toFixed(2)}`));\r\n      showMenu();\r\n      break;\r\n    }\r\n  \/\/Total Sales by Customer\r\n    case '5': {\r\n      const [rows] = await db.query(`\r\n        SELECT c.customer_name, SUM(s.quantity * p.price) AS total_spent\r\n        FROM sales s\r\n        JOIN products p ON s.product_id = p.product_id\r\n        JOIN customers c ON s.customer_id = c.customer_id\r\n        GROUP BY s.customer_id\r\n        ORDER BY total_spent DESC\r\n      `);\r\n      console.log(\"\\n Total Sales by Customer:\");\r\n      rows.forEach(r =&gt; console.log(`${r.customer_name} - \u20b9${Number(r.total_spent).toFixed(2)}`));\r\n      showMenu();\r\n      break;\r\n    }\r\n  \/\/Monthly Sales Summary\r\n    case '6': {\r\n      const [rows] = await db.query(`\r\n        SELECT DATE_FORMAT(s.sale_date, '%Y-%m') as month, SUM(s.quantity * p.price) as total\r\n        FROM sales s\r\n        JOIN products p ON s.product_id = p.product_id\r\n        GROUP BY month\r\n        ORDER BY month\r\n      `);\r\n      console.log(\"\\n Monthly Sales Summary:\");\r\n      rows.forEach(r =&gt; console.log(`${r.month} - \u20b9${Number(r.total).toFixed(2)}`));\r\n      showMenu();\r\n      break;\r\n    }\r\n  \/\/Top Selling Products\r\n    case '7': {\r\n      const [rows] = await db.query(`\r\n        SELECT p.product_name, SUM(s.quantity) as total_units\r\n        FROM sales s\r\n        JOIN products p ON s.product_id = p.product_id\r\n        GROUP BY p.product_id\r\n        ORDER BY total_units DESC\r\n        LIMIT 5\r\n      `);\r\n      console.log(\"\\n Top Selling Products:\");\r\n      rows.forEach(r =&gt; console.log(`${r.product_name} - ${r.total_units} units`));\r\n      showMenu();\r\n      break;\r\n    }\r\n\/\/Sales by Region\r\n    case '8': {\r\n      const [rows] = await db.query(`\r\n        SELECT c.region, SUM(s.quantity * p.price) AS total_sales\r\n        FROM sales s\r\n        JOIN customers c ON s.customer_id = c.customer_id\r\n        JOIN products p ON s.product_id = p.product_id\r\n        GROUP BY c.region\r\n        ORDER BY total_sales DESC\r\n      `);\r\n      console.log(\"\\n Sales by Region:\");\r\n      rows.forEach(r =&gt; console.log(`${r.region} - \u20b9${Number(r.total_sales).toFixed(2)}`));\r\n      showMenu();\r\n      break;\r\n    }\r\n\/\/Average Sale per Transaction\r\n    case '9': {\r\n      const [rows] = await db.query(`\r\n        SELECT AVG(s.quantity * p.price) AS avg_sale\r\n        FROM sales s\r\n        JOIN products p ON s.product_id = p.product_id\r\n      `);\r\n      console.log(`\\n Average Sale per Transaction: \u20b9${Number(rows[0].avg_sale).toFixed(2)}`);\r\n      showMenu();\r\n      break;\r\n    }\r\n\r\n    case '0':\r\n      console.log(\"Exiting...\");\r\n      rl.close();\r\n      break;\r\n\r\n    default:\r\n      console.log(\"Invalid option!\");\r\n      showMenu();\r\n  }\r\n}\r\n\r\nshowMenu();<\/pre>\n<h3>Program 2<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">const mysql = require('mysql2');\r\n\r\nconst pool = mysql.createPool({\r\n  host: 'localhost',\r\n  user: 'root',\r\n  password: 'root',\r\n  database: 'sales_db'\r\n});\r\n\r\nmodule.exports = pool.promise();<\/pre>\n<h3>Program 3<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">***************Sales Data Analysis Console Application using JavaScript (Node.js) with MySQL*************\r\n\r\n\r\n\r\nFeatures Included:\r\n\r\n1. Insert Options:\r\n\r\n3. Add Customer\r\n\r\n3. Add Product\r\n\r\nAdd Sales Transaction\r\n\r\nData Analysis Options:\r\n\r\n1. Total Sales by Product\r\n\r\n2. Total Sales by Customer\r\n\r\n3. Monthly Sales Summary\r\n\r\n4. Top Selling Products\r\n\r\n5. Sales by Region\r\n\r\n6. Average Sale per Transaction\r\n\r\nCREATE DATABASE sales_db;\r\nUSE sales_db;\r\n\r\nCREATE TABLE customers (\r\n  customer_id INT PRIMARY KEY,\r\n  customer_name VARCHAR(100),\r\n  region VARCHAR(100)\r\n);\r\n\r\nCREATE TABLE products (\r\n  product_id INT PRIMARY KEY,\r\n  product_name VARCHAR(100),\r\n  price DECIMAL(10, 2)\r\n);\r\n\r\nCREATE TABLE sales (\r\n  transaction_id INT PRIMARY KEY,\r\n  customer_id INT,\r\n  product_id INT,\r\n  quantity INT,\r\n  sale_date DATE,\r\n  FOREIGN KEY (customer_id) REFERENCES customers(customer_id),\r\n  FOREIGN KEY (product_id) REFERENCES products(product_id)\r\n);\r\n\r\n\r\n\r\n\r\nINSERT INTO customers (customer_id, customer_name, region) VALUES\r\n(1, 'Amit Sharma', 'North'),\r\n(2, 'Priya Verma', 'South'),\r\n(3, 'Rohit Singh', 'East'),\r\n(4, 'Neha Kapoor', 'West'),\r\n(5, 'Vikas Mehta', 'North');\r\n----------------------------------------------------------------------------------------\r\n\r\nINSERT INTO products (product_id, product_name, price) VALUES\r\n(1, 'Laptop', 55000.00),\r\n(2, 'Smartphone', 20000.00),\r\n(3, 'Printer', 8000.00),\r\n(4, 'Tablet', 15000.00),\r\n(5, 'Monitor', 12000.00);\r\n--------------------------------------------------------------------------------------\r\n\r\nINSERT INTO sales (transaction_id, customer_id, product_id, quantity, sale_date) VALUES\r\n(101, 1, 1, 1, '2024-01-10'),\r\n(102, 2, 2, 2, '2024-01-12'),\r\n(103, 3, 3, 1, '2024-02-05'),\r\n(104, 1, 2, 1, '2024-02-15'),\r\n(105, 4, 5, 3, '2024-03-01'),\r\n(106, 5, 4, 2, '2024-03-12'),\r\n(107, 3, 1, 1, '2024-04-18'),\r\n(108, 2, 3, 2, '2024-04-25'),\r\n(109, 1, 5, 1, '2024-04-27'),\r\n(110, 5, 2, 1, '2024-05-01');\r\n\r\n<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 const db = require(&#8216;.\/db&#8217;); const readline = require(&#8216;readline&#8217;); const rl = readline.createInterface({ input: process.stdin, output: process.stdout }); function showMenu() { console.log(&#8220;\\n &#8212;&#8212;- Sales Data Analysis &#8212;&#8212;&#8211;&#8220;); console.log(&#8220;1. Add Customer&#8221;); console.log(&#8220;2. Add Product&#8221;);&#46;&#46;&#46;<\/p>\n","protected":false},"author":581,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18979],"tags":[7758,31621,31622,20845,34784,34781,34785,34782,34783],"class_list":["post-145720","post","type-post","status-publish","format-standard","hentry","category-javascript","tag-javascript","tag-javascript-practical","tag-javascript-program","tag-javascript-project","tag-javascript-sales-data-analysis","tag-javascript-sales-data-analysis-project","tag-sales-data-analysis","tag-sales-data-analysis-project","tag-sales-data-analysis-using-javascript"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>JavaScript Project - Sales Data Analysis - DataFlair<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/data-flair.training\/blogs\/sales-data-analysis-using-javascript\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"JavaScript Project - Sales Data Analysis - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 const db = require(&#039;.\/db&#039;); const readline = require(&#039;readline&#039;); const rl = readline.createInterface({ input: process.stdin, output: process.stdout }); function showMenu() { console.log(&quot;n ------- Sales Data Analysis --------&quot;); console.log(&quot;1. 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