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  1. ZK
  2. ZK-2901

getBoundingClientRect() is slow in ie

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: Normal Normal
    • 8.0.1
    • 6.5.8, 8.0.0, 7.0.6.1
    • Browser Issue
    • Security Level: Jimmy
    • None

      the problem is reproduced in zk fiddle:
      http://zkfiddle.org/sample/2h2q4u2/6-Performance-problem-with-TreeDataEvent-INTERVAL-REMOVED

      click "Remove a bunch of tree items" button in ie. It will take a long time to remove tree items.

      Workaround:
      setting mold="paging" with a large page size will avoid the problem (by automatically calling invalidate() on the tree)

      We do some profiling and find most of time are spent on getBoundingClientRect(). In IE getBoundingClientRect() takes ~10x as long as chrome.

            jumperchen jumperchen
            JoeHuang JoeHuang
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