Function byClassName

lib/web/CodeMirror/test/test.js:16–27

(elt, cls)

}

function byClassName(elt, cls) {
  if (elt.getElementsByClassName) return elt.getElementsByClassName(cls);
  var found = [], re = new RegExp("\\b" + cls + "\\b");
  function search(elt) {
    if (elt.nodeType == 3) return;
    if (re.test(elt.className)) found.push(elt);
    for (var i = 0, e = elt.childNodes.length; i < e; ++i)
      search(elt.childNodes[i]);
  }
  search(elt);
  return found;
}

var ie_lt8 = /MSIE [1-7]\b/.test(navigator.userAgent);
var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent);