vue项目中，数组做比较，用新数组中的值 覆盖 老数组中的值

//老数组
"data": [
    {
      "id": null,
      "key": "movie_coin",
      "value": null,
    },
    {
      "id": null,
      "key": "original_price",
      "value": null,
    },
    {
      "id": null,
      "key": "discount_price",
      "value": null,
    }
  ]
  //新数组
  [
      {
      "id": null,
      "key": "movie_coin",
      "value": 333,
    },
  ]
  //oldArray代表老数组，newArray代表新数组
        for (let i = 0; i < oldArray.length; i++) {
          for (let a of newArray) {
            const o = oldArray[i];
            if (o.key == a.key) {
              oldArray[i].value = a.value;
            }
          }
        }