utilise/hashcode.js

Lean JavaScript Utilities as Micro-libraries

module.exports = function hashcode(str) {
  var hash = 0
  if (!str) return hash
  for (var i = 0; i < str.length; i++) {
    var char = str.charCodeAt(i)
    hash = ((hash<<5)-hash)+char
    hash = hash & hash
  }
  return hash
}