Register a powerful closure of dom events with javascript cyclic Variables

I encountered this problem today:
Copy codeThe Code is as follows:
// Pseudocode
For (var I = 0; I <n; I ++ ){
AddEvent (obj [I], "click", func (I ));
}

As a result, a problem occurs. All the dom events are registered with I = n, and some information is checked, which indicates that this is changed during the loop process, the registered events are also changed, and a solution is found;

Copy codeThe Code is as follows:
For (var I = 0; I <n; I ++ ){
(Function (I) {addEvent (obj [I], "click", function () {func (I) ;}) (I );
}

Use the mandatory package to maintain a persistent reference to the variable, which is very powerful!
(If you have a better method, please kindly advise (* ^__ ^ *) ......)