What is the use and syntax of a ternary operator? code example

Example 1: ternary operator

(condition) ? (if true, do this) : (otherwise, do this)

Example 2: ternary operator

isMember ? '$2.00' : '$10.00'
// isMember true =>  output: "$2.00"

// isMember false =>  output: "$10.00"

// isMember null =>  output: "$10.00"