Руслан

function getElementsByAttrValue(value) {
  var matchingElements = [];
  var allElements = document.getElementsByTagName('*'); 
  for(var i = 0, n = allElements.length; i < n; i++) {
    for(var j = 0, m = allElements[i].attributes.length; j < m; j++) {
      if(allElements[i].attributes[j].value == value) matchingElements.push(allElements[i]);
    }
  }
  return matchingElements;
}

U+00AD (SHY): an invisible, "soft" hyphen. This character is not rendered visibly