Consume configuration file within an HTML

I need to know how to consume a configuration file (with dynamic variables, depending on the environment where it is used) from an HTML and how I should invoke those variables (within the html code))

Any suggestions?

Example configuration file:

; Enviroment name
ENV_NAME = "DEV"

; Soap Webservices
EX1_WS  = "ACA VA VALOR DE UNA CONSTANTE"