Merge pull request #296 from laercios/master

Add how get evironment variable

Author: Swap76

JavaScript_Advance/get_environment_variable.js

@@ -0,0 +1,7 @@
+//  Getting values of environment variables
+//  For example, getting username of machine
+const ENV_VARIABLE_KEY = "USER";
+
+const ENV_VARIABLE_VALUE = process.env[ENV_VARIABLE_KEY];
+
+console.log(ENV_VARIABLE_VALUE);