Throw

throw (message = "message", type = "exception type", detail, errorCode = "error code", extendedInfo = "additional info", object = "java exception object")

<cfscript> 
function TotalInterest(principal, annualRate, months) 
{ var years = 0; 
var interestRate = 0; 
var totalInterest = 0; 
principal = REReplace(trim(principal), "[\$]", "", "ALL"); 
annualRate = Replace(trim(annualRate), "%", "", "ALL"); 

if ((principal <= 0) OR (annualRate <= 0) OR (months <= 0)) { 
Throw(type="InvalidData",message="All values must be greater than 0."); 

//Use of Throw function in cfscript 
} 
interestRate = annualRate / 100; 
years = months / 12; 
totalInterest = principal * (((1 + interestRate) ^ years) - 1); 
return DollarFormat(totalInterest); 
} 

try { 
WriteOutput(TotalInterest("$2500.00", "5.5%", "12")); 
} catch(InvalidData ex) { 
//Displayig exception details on screen 
WriteOutput("<p>An InvalidData exception was thrown.</p>"); 
WriteOutput("<p>#ex.message#</p>"); 
} 
</cfscript>