javascript 如何按键对 ng-options 中的数组进行排序？
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How to sort array in ng-options by key?
提问by Faud
There is such array:
有这样的数组：
month: Array[13]0: "M"1: "January"2: "February"3: "March"4: "April"5: "May"6: "June"7: "July"8: "August"9: "September"10: "October"11: "November"12: "December"
I do:
我做：
ng-options="key as value for (key, value) in data.month | orderBy:key"
But I get unsorted select list.
但我得到未排序的选择列表。
回答by Pankaj Parkar
In order to use tracking with filters use track by.
为了使用带有过滤器的跟踪，请使用track by.
Markup
标记
ng-options="key as value for (key, value) in data.month | orderBy:'key' track by key"
Update
更新
This orderBywill never work because you are having literal array. You need to convert this array to JSON like object which would structured like [{id: 0, value: "M"}, {id: 1, value: "January"},......]
这orderBy永远不会起作用，因为您拥有文字数组。您需要将此数组转换为类似 JSON 的对象，其结构类似于[{id: 0, value: "M"}, {id: 1, value: "January"},......]
HTML
HTML
ng-options="item.id as item.value for items in data.month | orderBy:'id'"
回答by solid_luffy
Your missing two ''s. This part, orderBy: keyshould be orderBy:'key'
你少了两个'。这部分，orderBy: key应该是orderBy:'key'
Try this:
试试这个：
ng-options="key as value for (key, value) in data.month | orderBy: 'key'"
回答by Faud
To resolve this issue need reformat ng-optionlike as:
要解决此问题，需要重新格式化，ng-option如：
day.id as day.value for day in data.month
And array data.monthwould be how as told user pankajparkar
和数组data.month将是如何告诉用户pankajparkar
