Iterate over querySelectorAll result

querySelectorAll results do not provide a way to iterate over them (what a shame!), it should be as simple as:

document.querySelectorAll('.failure').forEach(function(){
  doStuff()
});

nevertheless you can iterate with:

[].forEach.call(
  document.querySelectorAll('.awsome'), 
  function(el){
    doStuffWith(el);
  }
);

with ES1015 you can use the spread operator to make an array from the query selector result:

 [...document.querySelectorAll('.es2016')].forEach(function () {
    doMoreStuff();
})