JavaScript語法中將json轉成陣列

//將json轉成陣列
const positions = JSON.parse(JSON.stringify(positionsPo.value));
 positions.forEach(position => {
        const marker = new AMap.Marker({position,});
 });


獲取的資料樣式


positionsPo.value列印出來是
[
        [116.39, 39.9],
        [116.40, 39.91],
        [116.41, 39.92]
]
請將她轉換成
const positions = [
        [116.39, 39.9],
        [116.40, 39.91],
        [116.41, 39.92]
      ];
使其正常執行