function - JavaScript: A special variable/argument? -

i've been looking special argument and/or variable can i.e.:

function myfunction(arg1, arg2) {     switch(arg2) {         case firstchoice:         // code         break;          case secondchoice:         // code         break;     } } 

and usage as:

myfunction('string', firstchoice); 

so instance make different type of alerts output message in different styles:

function myalert(msg, type) {     switch(type) {         case style_one:         alert("style one: " + msg);         break;          case style_two:         alert("style two: *** " + msg + " ***");     } } 

and use follow:

myalert("hello world", style_one); 

or

myalert("hello world, again", style_two); 

i know can't make switches that, , i've been looking around internet no answer on type called or if possible. maybe there workaround?

help appriciated.

best regards, christian

i don't see specific problem is, here. regular consts, created global variables in javascript.

var style_one = 1; var style_two = 2;  function myalert(msg, type) {     switch(type) {         case style_one:         alert("style one: " + msg);         break;          case style_two:         alert("style two: *** " + msg + " ***");     } }  myalert("test", style_two); 

example