如何在 Underscore js - Arrays 中按（特定顺序）设置顺序
我有一个数组，我需要基于 TypeID 的自定义排序顺序 CategoryId:(5,9,14,1,9,3) 的最终输出
console.log(_.sortBy(arr, 'CategoryID'));
我可以对 CategoryId 进行排序，但我想按特定顺序按 CategoryID 排序。
<html>
<head>
<script type="text/javascript" src=
"https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.9.1/underscore.js">
</script>
</head>
<body>
<script type="text/javascript">
var arr = [
{name: 'kim', salary: 4000,CategoryId:3, TypeId:1},
{name: 'shelly', salary: 5000,CategoryId:14, TypeId:1},
{name: 'don', salary: 100,CategoryId:9, TypeId:1},
{name: 'mark', salary: 4500,CategoryId:5, TypeId:2},
{name: 'mark', salary: 4500,CategoryId:5, TypeId:1},
{name: 'joh', salary: 3450,CategoryId:9, TypeId:1},
{name: 'joe', salary: 5100,CategoryId:1, TypeId:1},
{name: 'moore', salary: 5100,CategoryId:14, TypeId:2},
{name: 'wane', salary: 1500,CategoryId:14, TypeId:2},
{name: 'dick', salary: 400,CategoryId:3, TypeId:1}
];
console.log(_.sortBy(arr, 'CategoryId'));
</script>
</body>
我希望
CategoryId:(5,9,14,1,3) 的结果集特定顺序
最终输出：
const output = [{
name: 'mark',
salary: 4500,
CategoryId: 5,
TypeId: 1,
}, {
name: 'joh',
salary: 3450,
CategoryId: 9,
TypeId: 1,
}, {
name: 'don',
salary: 100,
CategoryId: 9,
TypeId: 1,
}, {
name: 'joh',
salary: 3450,
CategoryId: 9,
TypeId: 1,
}, {
name: 'shelly',
salary: 5000,
CategoryId: 14,
TypeId: 1,
}, {
name: 'joe',
salary: 5100,
CategoryId: 1,
TypeId: 1,
}, {
name: 'kim',
salary: 4000,
CategoryId: 3,
TypeId: 1,
}, {
name: 'mark',
salary: 4500,
CategoryId: 5,
TypeId: 2,
}, {
name: 'moore',
salary: 5100,
CategoryId: 14,
TypeId: 2,
}, {
name: 'wane',
salary: 1500,
CategoryId: 14,
TypeId: 2,
}];
森林海2回答
-
哔哔one
如果你指定你想要的顺序为数组，你可以排序基于每个类别的指标内数组。var arr = [ {name: 'kim', salary: 4000,CategoryId:3, TypeId:1}, {name: 'shelly', salary: 5000,CategoryId:14, TypeId:1}, {name: 'don', salary: 100,CategoryId:9, TypeId:1}, {name: 'mark', salary: 4500,CategoryId:5, TypeId:2}, {name: 'mark', salary: 4500,CategoryId:5, TypeId:1}, {name: 'joh', salary: 3450,CategoryId:9, TypeId:1}, {name: 'joe', salary: 5100,CategoryId:1, TypeId:1}, {name: 'moore', salary: 5100,CategoryId:14, TypeId:2}, {name: 'wane', salary: 1500,CategoryId:14, TypeId:2}, {name: 'dick', salary: 400,CategoryId:3, TypeId:1} ];const categoryOrder = [5,9,14,1,9,3];const result = [...arr].sort((a,b) => { return a.TypeId === b.TypeId ? categoryOrder.indexOf(a.CategoryId) - categoryOrder.indexOf(b.CategoryId) : a.TypeId - b.TypeId;});console.log(result); -
萧十郎
为此，您必须制作自己的自定义排序功能，因为使用 underscore.js 无法实现var tempArray = [ {name: 'kim', salary: 4000, CategoryId: 3, TypeId: 1}, {name: 'shelly', salary: 5000, CategoryId: 4, TypeId: 1}, {name: 'don', salary: 100, CategoryId: 9, TypeId: 1}, {name: 'mark', salary: 4500, CategoryId: 5, TypeId: 2}, {name: 'mark', salary: 4500, CategoryId: 5, TypeId: 1}, {name: 'joh', salary: 3450, CategoryId: 9, TypeId: 1}, {name: 'joe', salary: 5100, CategoryId: 1, TypeId: 1}, {name: 'moore', salary: 5100, CategoryId: 14, TypeId: 2}, {name: 'wane', salary: 1500, CategoryId: 14, TypeId: 2}, {name: 'dick', salary: 400, CategoryId: 3, TypeId: 1}]function sort(order, array) { result = [] order.forEach(o => { let output = array.filter(element => element.CategoryId === o) // To further sort it by type id we can now use sort output = _.sortBy(output, 'TypeId') result = result.concat(output) }) // For output to be this way // TypeID: (1) - order by : 5,9,14,1,9,3, TypeID: 2 // Order by : 5,9,14,11,9,3. // we can use groupBy return _.groupBy(result, 'TypeId')}sort([5, 9, 14, 1, 9, 3], tempArray)这回答了你的问题了吗 ？
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