Question

I have the following if, else if, else construct and I am just curious how I could convert such as construct into a switch statement.

var emailSubject = email.subject.toLowerCase(); 
if(emailSubject.indexOf("account request") >= 0){
     //do acct req
}else if(emailSubject.indexOf("accounts pending removal for") >= 0){
     //do account removal 
}else if(emailSubject.indexOf("listserv application") >= 0){
     //do listserv app 
}else if(emailSubject.indexOf("student organization webmaster transfer request") >= 0){
     //do webmaster xfer 
}else{
     //do default 

} 

My thoughts are but I do not think this is correct:

switch(emailSubject){
    case this.indexOf("account request"):
       //do acct request 
       break;
    default:
       //do default 
}

Or

switch(0){
   case emailSubject.indexOf("accounts pending removal"):
     //process account pending removal 
     break;
   default:
     //do default behavior 
}

Answer 1

Your example code cannot easily be converted to a switch statement in most languages, nor should it. switch is for comparing a single variable against a range of constant values, whereas your logic requires comparison against non-constant values, with no variable to compare them with. if/else if is the correct construction for your case.