How To Get Second Last Element Of Array In Javascript Code Example

Snippet 1

  if (loc_array[loc_array.length - 1] === 'index.html') {
   // do something
} else {
   // something else
} 

Snippet 2

  const numbers = ["one", "two", "three", "four"];
console.log(numbers[numbers.length - 2]); 

Snippet 3

  const myNumbers = [100, 200, 300, 400, 500];
// option one
const seconLastNumber = myNumbers.slice(-2, -1)[0]) // 400

// option two
const seconLastNumber = myNumbers[numbers.length - 2]; // 400 

Snippet 4

  var arr = [1,2,3]
var lastelementofarr = [arr.length-1] //I think it will return the last element in the array