A sample description of the closure of JS

The intrinsic function of a function in JS can still access the variables defined in this function after the execution of the function, which is called the closure (Closure) Copy code code as follows: function outside () {var myVar = 1; return function () {alert (myVar);} } var t = outside (); T (); The intrinsic function of a function in JS can still access the variables defined in this function after the execution of the function, which is called closure (Closure) The following example adds an OnClick event to the three anchor Anchor1,anchor2,anchor3. The desired effect is to click on the anchor point to display the corresponding anchor ID, in fact, it is displayed "My ID is Anchor4", this is the closure caused by the logic of the bug, the function of adding an event after the completion of the value of I is 4, the code is copied as follows: ads.addevent (window , ' Load ', function (w3cevent) {m for (var i=1; I<

A sample description of the closure of JS