Chrome Version       : <Copy from: 'about:version'>
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL, along with the version, after other browsers where you
have tested this issue:
     Safari:
    Firefox:
       Edge:

What steps will reproduce the problem?
(1)restart
(2)delete
(3)type in again all of the java script back

What is the expected result?   
The IOS will work again


What happens instead?


Please provide any additional information below. Attach a screenshot if
possible.