I attempted to convert the code below into a ternary operator, but unfortunately ended up with an undefined result. Could someone please clarify where I made a mistake and advise on how to correct it properly? Thanks in advance.
const plantNeedsWater = function (day) {
/*if (day === 'Wednesday'){
return true;
} else {
return false;
}*/
(day === 'Wednesday') ? true : false
return
}
console.log(plantNeedsWater('Tuesday'));
When a function contains a simple plain return; statement, it will return undefined rather than a primitive Boolean.
There is no need to use a ternary operator in this case; you can simply return the evaluation directly.
const plantNeedsWater = function (day) {
return day === 'Wednesday';
}
console.log(plantNeedsWater('Tuesday')); // false
console.log(plantNeedsWater('Wednesday')); // trueYou can also write this in an ES5 style using an Arrow Function with implicit return:
const plantNeedsWater = (day) => day === 'Wednesday';
If you prefer to use the Conditional (ternary) Operator, you can do so to return non-Boolean values as shown below:
const plantNeedsWater = function (day) {
return day === 'Wednesday' ? "yes" : "no";
}
console.log(plantNeedsWater('Tuesday')); // "no"
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