how to select only classes with certain title

Question

var buttons = document.getElementsByClassName("art");

for(a=0;a<buttons.lenght;a++){
  if(buttons[a].getAttribute('title') == 'jamjam'){
    buttons.splice.call(a,1);
  }
}

Answer 1

This should work in most modern browsers:

var matches = document.querySelectorAll(".art[title=jamjam]");