javascript - Create Simple Dynamic Array

Question

What\'s the most efficient way to create this simple array dynamically.

var arr = [ \"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\", \"10\"];
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Answer 1

I hope you have to get last element from array variable so my solution

var arr = [ "1", "2", "3", "4", "5", "6", "7", "8", "9", "10"];
var mynumber = arr [arr .length - 1];
//var mynumber = 10;