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Poor performance of many dropdowns on the same page #284

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adolgoff opened this issue Mar 20, 2018 · 0 comments
Open
1 of 8 tasks

Poor performance of many dropdowns on the same page #284

adolgoff opened this issue Mar 20, 2018 · 0 comments

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@adolgoff
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adolgoff commented Mar 20, 2018 •
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Description

More than 100 dropdowns on the same page take few seconds to render and make page slow to response

Expected outcome

100-200 dropdowns on the same page should not significantly affect the page performance

Actual outcome

On the laptop the page with more than 100 dropdowns in real-life app takes few seconds to render and becomes laggy after the render completed.

Live Demo

https://polymer-repeater-test.herokuapp.com/view2
(Compare to react: https://react-repeater-test.herokuapp.com/menus)

Steps to reproduce

  1. Put more than 100 paper-dropdown-menus on the same page
  2. Check out the page render performance.

Browsers Affected

  • Chrome
  • Firefox
  • Safari 9
  • Safari 8
  • Safari 7
  • Edge
  • IE 11
  • IE 10
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@adolgoff