The @if statement is used as conditionally execute a group of statements, depending on the value of an expression.
Syntax
@if (condition1)
text1
[@elif (condition2)
text2]
[@else
text3]
@end
The @if statement syntax has these parts:
Part |
Description |
condition1, condition2 |
An expression that can be coerced into a Boolean expression. |
text1 |
Text to be parsed if condition1 is true. |
text2 |
Text to be parsed if condition1 is false and condition2 is true. |
text3 |
Text to be parsed if both condition1 and condition2 are false. |
Example
When you write an @if statement, you don't have to place each clause on a separate line. You can use multiple @elif clauses, however, all @elif clauses must come before an @else clause.
You commonly use the @if statement to determine which text among several options should be used for text output. For example:
alert(@if (@_win32) "using Windows NT or Windows 95" @else "using Windows 3.1" @end)
|
See also: Conditional Compilation, Conditional Compilation Variables, @cc_on Statement, @set Statement |
