Array [JavaScript snippet]

function main() {
  var a = new Array()

  a[ 0] = 'zero'
  a[ 1] = 'one'
  a[ 2] = 'two'
  a[42] = 'forty-two'

  txt_out('typeof(a): ' + typeof(a)) // object

  if (40 in a) {
    txt_out('Array has element 40')
  }
  else {
    txt_out("Array doesn't have element 40")
  }

  if (1 in a) {
    txt_out('Array has element 1')
  }
  else {
    txt_out("Array doesn't have element 1")
  }

}