Evaluates a passed expression and passes control to the cfcase tag that matches the expression result. You can, optionally, code a cfdefaultcase tag, which receives control if there is no matching cfcase tag value.
<cfswitch
expression = "expression">
one or more cfcase tags
zero or one cfdefaultcase tags </cfswitch>
cfcase, cfdefaultcase, cfabort, cfloop, cfbreak, cfexecute, cfexit, cfif, cflocation, cfrethrow, cfthrow, cftry; cfswitch, cfcase, and cfdefaultcase in Elements of CFML in ColdFusion MX Developer's Guide
ColdFusion MX: Changed cfdefaultcase tag placement requirements: you can put the cfdefaultcase tag at any position within a cfswitch statement; it is not required to be the last item.
| Attribute | Req/Opt | Default | Description |
|---|---|---|---|
|
expression |
Required |
|
ColdFusion expression that yields a scalar value. ColdFusion converts integers, real numbers, Booleans, and dates to numeric values. For example, True, 1, and 1.0 are all equal. |
This tag requires an end tag. All code within this tag must be within a cfcase or cfdefaultcase tag. Otherwise, ColdFusion throws an error.
Use this tag followed by one or more cfcase tags. Optionally, include a cfdefaultcase tag. This tag selects the matching alternative from the cfcase and cfdefaultcase tags, jumps to the matching tag, and executes the code between the cfcase start and end tags.
The cfswitch tag provides better performance than a series of cfif/cfelseif tags, and the code is easier to read.
<!--- This example shows the use of cfswitch and cfcase to
exercise a case statement in CFML. ---> <cfquery name = "GetEmployees" dataSource = "cfdocexamples"> SELECT Emp_ID, FirstName, LastName, EMail, Phone, Department FROM Employees </cfquery> <h3>cfswitch Example</h3> <!--- By outputting the query and using cfswitch, we classify the
output without using a cfloop construct. ---> <p>Each time the case is fulfilled, the specific information is printed; if the case is not fulfilled, the default case is output </p> <cfoutput query="GetEmployees"> <cfswitch expression="#Trim(Department)#"> <cfcase value="Sales"> #FirstName# #LastName# is in <b>sales</b><br><br> </cfcase> <cfcase value="Accounting"> #FirstName# #LastName# is in <b>accounting</b><br><br> </cfcase> <cfcase value="Administration"> #FirstName# #LastName# is in <b>administration</b><br><br> </cfcase> <cfdefaultcase> #FirstName# #LastName# is not in Sales, Accounting, or Administration.<br><br> </cfdefaultcase> </cfswitch> </cfoutput>