how to get commnads from the command line javascript code example

Example 1: execute terminal command nodejs

// You can use 'exec' this way
// LINUX EXAMPLE

const { exec } = require("child_process");

exec("ls -la", (error, stdout, stderr) => {
    if (error) {
        console.log(`error: ${error.message}`);
        return;
    }
    if (stderr) {
        console.log(`stderr: ${stderr}`);
        return;
    }
    console.log(`stdout: ${stdout}`);
});

Example 2: how to send a command in js

<form action="">
  <select name="channel">
   <option value="#channel1">channel1</option>
   <option value="#channel2">channel2</option>
  </select>
 </form>