browser/base/content/test/general/browser_duplicateIDs.js


1
2
3
4
5
6
7
8
9
10

function test() {
  var ids = {};
  Array.prototype.forEach.call(document.querySelectorAll("[id]"), function(
    node
  ) {
    var id = node.id;
    ok(!(id in ids), id + " should be unique");
    ids[id] = null;
  });
}