vue.js 排序代理对象数组，localeCompare不是函数

8cdiaqws 于 2023-01-14 发布在 Vue.js

关注(0)|答案(2)|浏览(248)

尝试使用ES6 arrayObj.sort(a,b) => a.property.localeCompare(b.property)语法，但出现错误：
TypeError：属性。localeCompare不是函数。
我认为localeCompare不在作用域中，但不知道如何将其绑定到排序的作用域，可能是因为数据存储在代理中？我也在VueJS 3中工作，但不认为这与此问题相关。

myData = 
Proxy {0: {…}, 1: {…}, 2: {…}, 3: {…}, 4: {…}}
[[Handler]]: Object
[[Target]]: Array(5)
0: {itemIndex: 1, itemFmt: 2, itemFmtName: 'Call To Order', guid: 'd66af412-00a0-4c49-b8b5-abaefb79fed0', maxCt: 1, …}
1: {itemIndex: 2, itemFmt: 6, itemFmtName: 'Title/Discussion/Motion', guid: '9f7b9d34-3fcb-42c7-866e-a56f71a8aa4f', maxCt: 0, …}
2: {itemIndex: 4, itemFmt: 6, itemFmtName: 'Title/Discussion/Motion', guid: '406bea5e-1cb0-4d90-96e9-9b80b64ff8ba', maxCt: 0, …}
3: {itemIndex: 5, itemFmt: 6, itemFmtName: 'Title/Discussion/Motion', guid: 'ad9aacda-5100-4eef-9ead-c61e1ec0c285', maxCt: 0, …}
4: {itemIndex: 7, itemFmt: 3, itemFmtName: 'Roll Call', guid: '1715f7a3-066d-4787-8233-a36df2a729a9', maxCt: 1, …}

myData.sort((a, b) => a.itemIndex.localeCompare(b.itemIndex))

vue.js

来源：https://stackoverflow.com/questions/69235003/sort-proxy-array-of-objects-localecompare-is-not-a-function

2条答案

按热度按时间

bhmjp9jg1#

localeCompare是method of String，但a.itemIndex是Number，因此该方法对该属性不可用。
要按itemIndex排序，请对两个Number使用减法：

const myData = [
  {itemIndex: 1, itemFmt: 2, itemFmtName: 'Call To Order', guid: 'd66af412-00a0-4c49-b8b5-abaefb79fed0', maxCt: 1 },
  {itemIndex: 2, itemFmt: 6, itemFmtName: 'Title/Discussion/Motion', guid: '9f7b9d34-3fcb-42c7-866e-a56f71a8aa4f', maxCt: 0},
  {itemIndex: 4, itemFmt: 6, itemFmtName: 'Title/Discussion/Motion', guid: '406bea5e-1cb0-4d90-96e9-9b80b64ff8ba', maxCt: 0},
  {itemIndex: 5, itemFmt: 6, itemFmtName: 'Title/Discussion/Motion', guid: 'ad9aacda-5100-4eef-9ead-c61e1ec0c285', maxCt: 0},
  {itemIndex: 7, itemFmt: 3, itemFmtName: 'Roll Call', guid: '1715f7a3-066d-4787-8233-a36df2a729a9', maxCt: 1},
]

// sort by itemIndex in ascending order
myData.sort((a,b) => a.itemIndex - b.itemIndex)

console.log(myData)

要按itemFmtName排序，请对两个String使用localeCompare：

const myData = [
  {itemIndex: 1, itemFmt: 2, itemFmtName: 'Call To Order', guid: 'd66af412-00a0-4c49-b8b5-abaefb79fed0', maxCt: 1 },
  {itemIndex: 2, itemFmt: 6, itemFmtName: 'Title/Discussion/Motion', guid: '9f7b9d34-3fcb-42c7-866e-a56f71a8aa4f', maxCt: 0},
  {itemIndex: 4, itemFmt: 6, itemFmtName: 'Title/Discussion/Motion', guid: '406bea5e-1cb0-4d90-96e9-9b80b64ff8ba', maxCt: 0},
  {itemIndex: 5, itemFmt: 6, itemFmtName: 'Title/Discussion/Motion', guid: 'ad9aacda-5100-4eef-9ead-c61e1ec0c285', maxCt: 0},
  {itemIndex: 7, itemFmt: 3, itemFmtName: 'Roll Call', guid: '1715f7a3-066d-4787-8233-a36df2a729a9', maxCt: 1},
]

// sort by itemFmtName in alphabetical order
myData.sort((a,b) => a.itemFmtName.localeCompare(b.itemFmtName))

console.log(myData)

赞(0）回复(0）举报 2023-01-14

enxuqcxy2#

如前所述，localCompare处理字符串。
下面是一个helper函数，它检查sort属性是字符串还是数字。

const data = [
  { index: 4, value: 'c' },
  { index: 2, value: 'a' },
  { index: 3, value: 'b' },
  { index: 1, value: 'd' },
]

const sortHelper = (data, sortBy) => {
  if (data.find(x => typeof x[sortBy] !== 'number')) 
    // sort by localeCompare
    return data.sort((a,b) => a[sortBy].localeCompare(b[sortBy]))
  else
    // sort by number
    return data.sort((a,b) => a[sortBy] - b[sortBy])
}

console.log(sortHelper(data, 'index'));
console.log(sortHelper(data, 'value'));

赞(0）回复(0）举报 2023-01-14

我来回答

vue.js 排序代理对象数组，localeCompare不是函数

2条答案

相关问题

热门标签

最新问答