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 

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