JavaScript Último elemento da matriz
let arr = [1,2,3]
arr[arr.length - 1] //returns last element in an array
Elegant Elk
let arr = [1,2,3]
arr[arr.length - 1] //returns last element in an arrayvar my_array = /* some array here */;
var last_element = my_array[my_array.length - 1];var colors = ["red","blue","green"];
var green = colors[colors.length - 1]; //get last item in the array
const str = "Users/Edit/12345";
let idx = str.lastIndexOf("/"); // returns 10
idx = str.lastIndexOf("x"); // returns -1
idx = str.lastIndexOf("Edit") // returns 6
idx = str.lastIndexOf("edit") // returns -1 -- case sensitive
// add "from" parameter
// the search happens backwards, starting at the provided from parameter
idx = str.lastIndexOf("s"); // returns 4
idx = str.lastIndexOf("s", 3); // returns 1
// Find the last item in an array.
arrayName[arrayName.length - 1]arr.slice(-1).pop()