Angularjs $scope object is bidirectionally bound to Js var object value

  1. userInfo is a Json object, and $scope.changeInfo is the value used for page display. You need to retain a copy of the original data to determine whether the object has a changed value.
  2. now it is found that as long as the value of one of the three objects changes, the other two will change together. What can I do to make a change in one object without affecting the other two objects?

Mar.16,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bf1de0-31d9b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bf1de0-31d9b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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