1. <script><br />        //利用函数翻转任意数组      reverse翻转<br />        functionreverse (arr) {<br />            varnewArr = [];<br />            for(i = arr.length - 1; i >= 0; i--){<br />                newArr[newArr.length] = arr[i];<br />            }<br />            returnnewArr;<br />        }<br />        console.log(reverse([1,2,3,4,5]));<br />    </script>

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