
vue.js中高效合并数组并替换指定键值
本文演示如何在Vue.js中合并两个数组,并同时替换目标数组中特定键的值。 假设我们有两个数组arr1和arr2,需要将arr1中attachment键的值替换到arr2中对应位置的attachment键。
示例数据:
let arr1 = [
{ "attachment": "https://lumall.inspures.com/images/img/product/8e358701-177a-46e1-b25e-1e13fbcd92e0.png" },
{ "attachment": "https://lumall.inspures.com/images/img/product/2adcd34a-786f-43ac-b8a8-3c45ed408019.png" }
];
let arr2 = [
{ "attachment": "blob:http://localhost:8096/9b565718-7799-440b-b761-de747f2d59c5", "number": 0, "id": "" },
{ "attachment": "blob:http://localhost:8096/1d826622-bc72-466f-8778-30dcaf773489", "number": 1, "id": "" }
];
利用map()方法迭代arr2,并更新每个对象的attachment属性:
arr2 = arr2.map((item, index) => ({
...item,
attachment: arr1[index].attachment
}));
最终arr2将变为:
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[
{
"attachment": "https://lumall.inspures.com/images/img/product/8e358701-177a-46e1-b25e-1e13fbcd92e0.png",
"number": 0,
"id": ""
},
{
"attachment": "https://lumall.inspures.com/images/img/product/2adcd34a-786f-43ac-b8a8-3c45ed408019.png",
"number": 1,
"id": ""
}
]
此方法简洁高效地完成了数组合并和键值替换,确保了数据的一致性和完整性。 需要注意的是,此方法假设arr1和arr2具有相同长度。 如果长度不同,需要添加相应的错误处理机制。










