Select All and invert check boxes for JS implementation

A senior student told me that "the most dull and quickest way to learn is to learn something." Now, it makes sense to think about it. I learned a lot from the senior student. Unfortunately, he graduated. This evening, I learned how to use js to implement full selection and invert selection of check boxes. First, I will write the following in silence. I hope that those who have read this article will benefit.

Select All and invert check boxes for JS implementation

<! --
Function selectall (e ){
VaR fruit = Document. getelementsbyname = ("Fruit ");
For (VAR I = 0; I

Select All
Apple
Bananas
Peach
Orange