> For the complete documentation index, see [llms.txt](https://soufatn.gitbook.io/rxjs-book/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://soufatn.gitbook.io/rxjs-book/summary/observable/observable_instance_methods/startwith.md).

# startWith

Prepends a sequence of values to an observable sequence with an optional scheduler and an argument list of values to prepend.

## Arguments

1. `[scheduler]` *(`Scheduler`)*: Scheduler to execute the function.
2. `args` *(arguments)*: Values to prepend to the observable sequence.

## Returns

*(`Observable`)*: The source sequence prepended with the specified values.

## Example