purpose: click the button to return to the top
Code:
timer = requestAnimation(function fn(){
//....
timer = requestAnimation(fn)
})
question: can function fn () be abbreviated, such as
like = >
purpose: click the button to return to the top
Code:
timer = requestAnimation(function fn(){
//....
timer = requestAnimation(fn)
})
question: can function fn () be abbreviated, such as
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