While

1. Why Use a While Loop?#

Unlike a fixed Repeat N block, a While loop doesn't require you to know in advance how many times the loop should run. It evaluates a condition before every iteration:

• If the condition is true, the loop executes its inner actions.
• If the condition is false, the loop ends, and execution continues to the next block.

This is particularly useful when scraping lists of unknown length, clicking "Load More" buttons, or navigating through paginated results until a "Next" button is no longer available.

2. Setting Up the Condition#

The While block requires a JavaScript expression to evaluate. This expression determines whether the loop should continue running.

Configuration#

• Condition: A JavaScript expression (e.g., exists('.next-page-btn')).
• Value: (Optional) Max iterations to prevent infinite loops (e.g., 50).

You can use helper functions like exists('[your-css-selector]') to check if an element is present in the DOM.

3. Example: Handling Pagination#

A common use case is clicking a "Next Page" button as long as it exists:

1. Add a While block.
2. Set the Condition to exists('[your-next-button-selector]').
3. Inside the loop, add a Click block targeting [your-next-button-selector].
4. Add a Wait for Selector block or a fixed Wait to ensure the next page loads before the loop restarts.
5. The loop will automatically end when the next button is no longer found.

By setting a maximum iteration count in the Value field, you can ensure your task doesn't run forever if the page structure changes unexpectedly.