The demo of fs.

Author: Colin Lee

node-api/fs.js

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+const fs = require('fs');
+
+// fs.unlink('/tmp/hello', (err) => {
+//   if (err) throw err;
+//   console.log('成功删除 /tmp/hello');
+// });
+
+// try {
+//   fs.unlinkSync('/tmp/hello');
+//   console.log('successfully deleted /tmp/hello');
+// } catch (err) {
+//   console.log(err);
+// }
+
+// fs.rename('./tmp/hello.js', './tmp/world.js', (err) => {
+//   if (err) throw err;
+//   fs.stat('./tmp/world.js', (err, stats) => {
+//     if (err) throw err;
+//     console.log(`文件属性: ${JSON.stringify(stats)}`);
+//   });
+// });
+
+// fs.open('/open/some/file.txt', 'r', (err, fd) => {
+//   if (err) throw err;
+//   fs.close(fd, (err) => {
+//     if (err) throw err;
+//   });
+// });
+
+// fs.open('./global.js', 'r', (err, fd) => {
+//   if (err) throw err;
+//   fs.close(fd, (err) => {
+//     if (err) throw err;
+//   });
+// });
+
+// const { URL } = require('url');
+// const fileUrl = new URL('file:///tmp/hello');
+// fs.readFileSync(fileUrl);
+
+// fs.open('./global.js', 'r', (err, fd) => {
+//   if (err) throw err;
+//   fs.fstat(fd, (err, stat) => {
+//     if (err) throw err;
+//     // 各种操作
+
+//     // 必须关闭文件描述符！
+//     fs.close(fd, (err) => {
+//       if (err) throw err;
+//     });
+//   });
+// });
+
+// 例子，处理 fs.watch() 监听器。
+// fs.watch('./global.js', { encoding: 'buffer' }, (eventType, filename) => {
+//   if (filename) {
+//     console.log(filename);
+//     // 打印: <Buffer ...>
+//   }
+// });

node-api/global.js

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+// global全局变量：
+Buffer
+__dirname
+__filename
+clearImmediate
+clearInterval
+clearTimeout
+console
+exports
+global
+module
+process
+require
+setImmediate
+setInterval
+setTimeout
+URL
+URLSearchParams