Sample code for Javascript loop binding events_javascript tips
For example: a list of indefinite length, the background changes when the mouse passes over a certain item.
[Ctrl A Select all Note: If you need to introduce external Js, you need to refresh to execute
This example loops into a group Object binding event handler function.
However, if we add some requirements on this basis. For example, when you click on a certain record, what record is this?
Maybe you will write this as a matter of course: If you need to introduce external Js, you need to refresh to execute
]
Test it and you will find alert What comes out is: This is the 6th record
In fact, the for loop here has cycled through the entire list and executed i, so i here becomes 6.
Is there any good way to solve this problem? ?
That’s closure. Personally, I think closure is one of the most elusive things in js.
Look at what closure is:
Closure means that inner functions can reference existing and variables within the enclosing function, even if execution of the outer function has terminated. [Ctrl A Select all Note:
If you need to introduce external Js, you need to refresh it to execute
]PS: Closure is difficult , very complicated!

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