head javascript Code Snippet in 2024
arraybeginner
Last Updated: 11 April 2024
Returns the head of an array.
- Check if
arris truthy and has alengthproperty. - Use
arr[0]if possible to return the first element, otherwise returnundefined.
const head = arr => (arr && arr.length ? arr[0] : undefined);head([1, 2, 3]); // 1
head([]); // undefined
head(null); // undefined
head(undefined); // undefinedjavascript snippet similar to head For You in April 2024
Subscribe to our Newsletter
Subscribe to get resources directly to your inbox. You won't receive any spam! ✌️