[Home](./index.md) > [bitburner](./bitburner.md) > [NS](./bitburner.ns.md) > [sleep](./bitburner.ns.sleep.md) ## NS.sleep() method Suspends the script for n milliseconds. **Signature:** ```typescript sleep(millis?: number): Promise; ``` ## Parameters

Parameter	Type	Description
millis	number	_(Optional)_ Number of milliseconds to sleep. Default to 0.

**Returns:** Promise<true> A promise that resolves to true when the sleep is completed. ## Remarks RAM cost: 0 GB Note that the actual delay may be longer than intended. For more information, please check [https://developer.mozilla.org/en-US/docs/Web/API/Window/setTimeout\#delay](https://developer.mozilla.org/en-US/docs/Web/API/Window/setTimeout#delay). ## Example ```js // This will count from 1 to 10 in your terminal, with one number every 5 seconds for (let i = 1; i <= 10; ++i) { ns.tprint(i); await ns.sleep(5000); } ```