last javascript Code Snippet in 2024
arraybeginner
Last Updated: 22 July 2024
Returns the last element in an array.
- Check if
arris truthy and has alengthproperty. - Use
Array.prototype.length - 1to compute the index of the last element of the given array and return it, otherwise returnundefined.
const last = arr => (arr && arr.length ? arr[arr.length - 1] : undefined);
last([1, 2, 3]); // 3
last([]); // undefined
last(null); // undefined
last(undefined); // undefinedjavascript snippet similar to last For You in July 2024
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