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JS Array replication problem

Source: Internet
Author: User
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Senior interview back to ask a question, JS in the array how to copy, work did not encounter, interview also rose Insight, he told me, too late didn't pay attention, early up research, write a DOM, look at

The code is as follows

<!doctype html>"en">"UTF-8"> <title> Array Replication </title>vararr1=[1,2,3]    varArr2=arr1.slice (0)    //var arr2=arr1.concat ()Arr1.length=0Console.log (arr1) console.log (ARR2)//does not affect ARR2</script><body> </body>
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JS Array replication problem

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