---
id: "9b8f7e51-9bf3-47a8-acb7-b62b30759bac"
name: "Key Functions"
micro_summary: "Required reading: reference for js(), print(), wait_for_load(), wait(), and capture_screenshot() — what each does and when to use it."
status: "in_progress"
see_also: []
scope: "Reference for js(), print(), wait_for_load(), wait(), and capture_screenshot() — what each does and when to use it."
---
## Key Functions

- `js("...")` — execute JavaScript in the browser context, returns string
- `print()` — Python's print (not `console.log()`)
- `wait_for_load()` — wait for page load
- `wait(1)` — wait for React SPA hydration
- `capture_screenshot()` — save screenshot to verify state