HowProgrammingWorks
diff --git a/‎JavaScript/2-fetch.js
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diff --git a/‎JavaScript/3-fetch.js
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+'use strict';
+
+const http = require('http');
+const https = require('https');
+
+const fetch = url => new Promise((resolve, reject) => {
+  const protocol = url.startsWith('https') ? https : http;
+  protocol.get(url, res => {
+    if (res.statusCode !== 200) {
+      const { statusCode, statusMessage } = res;
+      reject(new Error(`Status Code: ${statusCode} ${statusMessage}`));
+    }
+    res.setEncoding('utf8');
+    const lines = [];
+    res.on('data', chunk => lines.push(chunk));
+    res.on('end', () => resolve(lines.join()));
+  });
+});
+
+// Usage
+
+fetch('http://ietf.org/')
+  .then(body => console.log(body))
+  .catch(err => console.error(err));