nodeJS homework1

.gitignore

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+node_modules

add.js

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+const url = require("url");
+
+function handleAdd(req, res) {
+  const query = url.parse(req.url, true).query;
+
+  console.log(query);
+
+  res.end(
+    `${query.num1} + ${query.num2} = ${parseInt(query.num1) +
+      parseInt(query.num2)}`
+  );
+}
+
+module.exports = {
+  handleAdd: handleAdd
+};

app.js

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+const http = require("http");
+const add = require("./add");
+const subtract = require("./subtract");
+const multiply = require("./multiply");
+
+const hostname = "localhost";
+const port = 3000;
+
+//Create HTTP server and listen on port 3000 for requests
+const server = http.createServer((req, res) => {
+  console.log(req.url);
+
+  if (req.url.startsWith("/add")) {
+    add.handleAdd(req, res);
+    res.writeHeader(200, { "Content-Type": "text/html" });
+  } else if (req.url.startsWith("/subtract")) {
+    subtract.handleSubtract(req, res);
+    res.writeHeader(200, { "Content-Type": "text/html" });
+  } else if (req.url.startsWith("/multiply")) {
+    multiply.handleMultiply(req, res);
+    res.writeHeader(200, { "Content-Type": "text/html" });
+  } else {
+    res.statusCode = 404;
+    res.setHeader("Content-Type", "text/plain");
+    res.end("Operation is not recognized\n");
+  }
+});
+
+//listen for request on port 3000, and as a callback function have the port listened on logged
+server.listen(port, hostname, () => {
+  console.log(`Server running at http://${hostname}:${port}/`);
+});

multiply.js

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+const url = require("url");
+
+function handleMultiply(req, res) {
+  const query = url.parse(req.url, true).query;
+
+  console.log(query);
+
+  res.end(
+    `${query.num1} x ${query.num2} = ${parseInt(query.num1) *
+      parseInt(query.num2)}`
+  );
+}
+
+module.exports = {
+  handleMultiply: handleMultiply
+};