public/javascripts/utils/squareId.js

   1 // Get the identifier of a HTML square from its numeric coordinates o.x,o.y.
   2 function getSquareId(o)
   3 {
   4     // NOTE: a separator is required to allow any size of board
   5     return  "sq-" + o.x + "-" + o.y;
   6 }
   7
   8 // Inverse function
   9 function getSquareFromId(id) {
  10     let idParts = id.split('-');
  11     return [parseInt(idParts[1]), parseInt(idParts[2])];
  12 }