Can multiple identical events be bound to an openlayers map?

the old-fashioned require.js,
used in current projects all bind events to openlayers.
in order to avoid binding an event to generate a large number of global variables,
now wants to bind events to each module.
will this affect performance?
(openlayers is version 4.0)

Openlayers html5 css html javascript
Sep.30,2021

Previous: Mongodb always says that there is no createindex method for indexing.

Next: How to save the state of canvas and do the undo function the, save () method seems to be of little use.

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
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-64f5-1e469fc-44357.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e469fc-44357.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?