Finally, we log result and we see “You did not tell me, again!”.The default value is assigned to the result variable. Then, let’s read the next line like this: IF favoriteFruit_1 is undefined, THEN the default value is ‘You did not tell me, again!’.We start by declaring the favoriteFruit_1 variable but this time we make it undefined.

const favoriteFruit_1 = undefined const result = favoriteFruit_1 ? 'You did not tell me, again!' console.log(result) // 'You did not tell me, again!' Let’s have another example and then I will explain why these two specific examples. the one on the right side of the ? operator. So, if the value of the first variable (the one on the left side of the nullish coalescing operator i.e. Finally, we log result and we see “You did not tell me”.Then, let’s read the next line like this: IF favoriteFruit is null, THEN the default value is “You did not tell me”.We start by declaring the variable favoriteFruit and we make it null.const favoriteFruit = null const result = favoriteFruit ? 'You did not tell me' console.log(result) // 'You did not tell me' This might seem complex but it is very simple! Understanding the JavaScript ? operator

MDN defines the nullish coalescing operator (?) as “ a logical operator that returns its right-hand side operand when its left-hand side operand is null or undefined and otherwise returns its left-hand side operand.” The JavaScript double question mark (?) operator is called the nullish coalescing operator and it provides a default value when a variable or an expression evaluates to null or undefined.

Javascript questionmark operator