Is there a an option to modify the post content directly on the browser instead of having it reflected on browser by modifying in the database?

Is there a an option to modify the post content directly on the browser instead of having it reflected on browser by modifying in the database?

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)