What does je vais à la mean?

"Je vais à la" is incomplete in French. It means "I am going to the..." To make it a complete sentence, you need to add a feminine noun or a feminine adjective followed by a feminine noun.

For example:

* Je vais à la bibliothèque. (I am going to the library.)

* Je vais à la plage. (I am going to the beach.)

* Je vais à la maison. (I am going home.)

* Je vais à la grande ville. (I am going to the big city.)

The word "la" is the feminine singular definite article in French, meaning "the".