IF-THEN/ELSE Statements. To perform an operation conditionally, use an IF statement to test an expression. Alternative actions appear in a THEN clause and, ... The following is an example of nested IF ...

In JavaScript, the if/else statement is used to make decisions in your code based on a condition. ... In this example, if the age is greater than or equal to 18, it will print "You are an adult." ...

The ELSE statement optionally follows the IF statement and gives an action to be taken when the IF expression is false. ... for example, if max(a)<20 then p=0; else p=1; The IF statement results in ...