string-pattern.js

'use strict';

var input = 'cbabadcbbabbcbabaabccbabc';
var match = 'abbc';
var matches = [];
var weight = getWeight('abad');
var result = [];

for (var i = 0; i < input.length; i++) {
  if (getWeight(input.substr(i, match.length)) === weight) {
    matches.push(i);
  }

}
matches = matches.map(function forEach(idx) {
  var slidingStr = input.substr(idx, match.length);
  return hasMatch(slidingStr, match) ? slidingStr : undefined;
}).filter(function filter(item) {
  return item !== undefined;
});
console.log(matches);
function getWeight(input) {
  input = input && input.toLowerCase() || '';
  var total = 0;
  for (var i = 0; i < input.length; i++) {
    var char = input.charCodeAt(i);
    var hash = ((hash << 5) - hash) + char;
    total += input.charCodeAt(i);
  }
  return total;
}

function hasMatch(input, target) {
  for (var i = 0; i < input.length; i++) {
    if (target.indexOf(input[i]) < 0) {
      return false;
    }
  }
  return true;
}