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Is there a notation to access the last element of an array in TypeScript? In Ruby I can say: array[-1]. Is there something similar?
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1) Using the array length property The length property returns the number of elements in an array. Subtracting 1 from the length of an array gives the index of the last element of an array using which the last element can be accessed.
The Last element is nothing but the element at the index position that is the length of the array minus-1. If the length is 4 then the last element is arr[3].
To get the second to last element in an array, call the at() method on the array, passing it -2 as a parameter, e.g. arr.at(-2) . The at method returns the array element at the specified index.
The first and last elements are accessed using an index and the first value is accessed using index 0 and the last element can be accessed through length property which has one more value than the highest array index. The array length property in JavaScript is used to set or return the number of elements in an array.
You can access the array elements by it's index. The index for the last element in the array will be the length of the array-1 ( as indexes are zero based).
This should work.
var items: String[] = ["tom", "jeff", "sam"]; alert(items[items.length-1]) Here is a working sample.
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