Aug
19

Javascript – Stupid Idea: Hoisting at the end

vjeux Javascript 2011-08-19

JSLint imposes us to do manual hoisting of variables. What if we did it but at the end of the function? 😛

How you write

function print_array (array) {
  var length = array.length;
  for (var i = 0; i < length; ++i) {
    var elem = array[i];
    console.log(elem);
  }
}

How Javascript "rewrites" it

function print_array (array) {
  var length, elem, i;
 
  length = array.length;
  for (i = 0; i < length; ++i) {
    elem = array[i];
    console.log(elem);
  }
}

How we could write it!

function print_array (array) {
  length = array.length;
  for (i = 0; i < length; ++i) {
    elem = array[i];
    console.log(elem);
  }
 
  var length, elem, i;
}

I have no idea if that could be of any use but it amused me 🙂

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