This looked fairly straightforward to me when I started, but for some reason I'm getting an empty array everytime I try to run the result on codewars. I'm hoping you can help me identify what the problem is.

function alphabetPosition(text) {

  text.split(' ').join('');

  var chari = ;

  var arr = [];

  var alphabet = abcdefghijklmnopqrstuvwxyz.split('');

  for(var i = 0; i < text.len; i++){

    chari = text.charAt(i).toLowerCase();

    if(alphabet.indexOf(chari) > -1){

      arr.push(alphabet.indexOf(chari));

    }

  }

  return arr;

}

console.log(alphabetPosition(Hello World));

My idea is to get the text from the parameter then strip out the spaces. I made a variable for my empty array and make an alphabet string that I can later search through. In the for loop, i make each character lowercase, and if the character is found in the alphabet string, its position gets pushed into the array (arr). I appreciate your time.