Memory leakage caused by closures under IE.

In earlier versions of IE, JScript objects and COM objects use different garbage collection mechanisms.

Because the closure contains variable objects that contain functions, if our closure references

When a reference to a variable object containing a function exists as long as the anonymous function exists, the reference must exist at least once,

Therefore, the occupied memory will never be released.

We usually write an example:

function eve(){                            var ele = document.getElementById("btn");                                 ele.onclick = function(){                                         console.log( ele.id );                                     }                     }

Solution code:

function eve(){                              var ele = document.getElementById("btn");                              var id = ele.id;                                 ele.onclick = function(){                                             console.log( id );                                          };                               ele = null;                    }

 

Memory leakage caused by closures under IE.