Description
The if…else
allows greater control over the flow of code than the basic if statement, by allowing multiple tests to be grouped together. An else
clause (if at all exists) will be executed if the condition in the if
statement results in false
. The else
can proceed another if
test, so that multiple, mutually exclusive tests can be run at the same time.
Each test will proceed to the next one until a true test is encountered. When a true test is found, its associated block of code is run, and the program then skips to the line following the entire if/else construction. If no test proves to be true, the default else
block is executed, if one is present, and sets the default behavior.
Note that an else if
block may be used with or without a terminating else
block and vice versa. An unlimited number of such else if
branches is allowed.
Syntax
if (condition1) {
// do Thing A
}
else if (condition2) {
// do Thing B
}
else {
// do Thing C
}