Ternary Operator

Using the Ternary Operator

The ternary operator is a conditional operator that provides a shorthand for if-else statements. It is the only operator that takes three operands: a condition followed by a question mark (?), then an expression to execute if the condition is truthy followed by a colon (:), and finally the expression to execute if the condition is falsy.

Syntax

condition ? exprIfTrue : exprIfFalse;

Parameters

• condition: An expression whose value is used as a condition.

• exprIfTrue: An expression which is evaluated if the condition evaluates to a truthy value (one which equals or can be converted to true).

• exprIfFalse: An expression which is evaluated if the condition is falsy (that is, has a value which can be converted to false).

Examples

Basic Usage

Here's a simple example of using a ternary operator to decide which string to assign to a variable.

$.RESTService.body.age >= 21 ? "Eligible to Vote" : "Not Eligible to Vote";

Chaining / Nested Ternary Operators

You can chain ternary operators for multiple conditions.

$.RESTService.body.score > 90 ? "A" : ($.RESTService.body.score > 80 ? "B" : ($.RESTService.body.score > 70 ? "C" : "D"));

Best Practices

• Don't over-nest: Deeply nested ternary operators can be very difficult to understand. Limit chaining to one or two levels at most.