get system free memory in javascript

To get the system free memory in JavaScript, you can use the os module in Node.js. The os module provides a method called freemem() which returns the amount of free system memory in bytes.

Here's an example:

const os = require('os');

// Get the free memory in bytes
const freeMemory = os.freemem();

// Convert bytes to megabytes
const freeMemoryMB = freeMemory / (1024 * 1024);

console.log(`Free Memory: ${freeMemoryMB.toFixed(2)} MB`);
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In the code above, we first require the os module. Then, we use the os.freemem() method to get the amount of free memory in bytes. We then convert the bytes to megabytes and log the result.

Note that this code only works in a Node.js environment and not in a web browser.