Question

我想使用其他数组的Javascript对JSON项进行排序，并按字母顺序对其余项进行排序。

我有一个我想要获取JSON项目的数组：

var order = [3,9,50,7];

带有＆＃34; ID＆＃34的JSON;我想使用订单数组排序的密钥，以及使用＆＃34; Name＆＃34;的其他非匹配项目。请关键。

这是原始的JSON：

var data = [
    {
        "id": "9",
        "title": "B"
    },
    {
        "id": "63",
        "title": "Z"
    },
    {
        "id": "433",
        "title": "D"
    },
    {
        "id": "50",
        "title": "A"
    },
    {
        "id": "2",
        "title": "G"
    }
]

这是我希望它的最终结果：

var data = [
    {
        "id": "9",
        "title": "B"
    },
    {
        "id": "50",
        "title": "A"
    },
    {
        "id": "433",
        "title": "D"
    },
    {
        "id": "2",
        "title": "G"
    },
    {
        "id": "63",
        "title": "Z"
    }
]

Answer 1

您可以使用对象作为排序顺序，使用默认值将其他ID移动到结尾。

var order = [3, 9, 50, 7],
    data = [{ id: "9", title: "B" }, { id: "63", title: "Z" }, { id: "433", title: "D" }, { id: "50", title: "A" }, { id: "2", title: "G" }],
    orderO = {};

order.forEach(function (a, i, aa) {
    orderO[a] = i - aa.length; // use negative values and zero as default
});

data.sort(function (a, b) {
    return (orderO[a.id] || 0) - (orderO[b.id] || 0) || a.title.localeCompare(b.title);
});

console.log(data);
console.log(orderO);

.as-console-wrapper { max-height: 100% !important; top: 0; }

Answer 2

首先找到data数组中与order数组匹配的项目。然后使用自定义排序算法对剩余项目进行排序，连接结果。

＆＃13;

var order = [3, 9, 50, 7];
var data = [{ "id": "9", "title": "B" }, { "id": "63", "title": "Z" }, { "id": "433", "title": "D" }, { "id": "50", "title": "A" }, { "id": "2", "title": "G" }];

function sortArr(arr, order) {
    var newArr = [];
    for (var i = 0; i < order.length; i++) {
        var index = arr.findIndex(x => x.id === order[i].toString());
        if (index >= 0) {
            newArr.push(arr.splice(index, 1));
        }
    }

    return newArr.concat(arr.sort((a, b) => a.title > b.title ? 1 : -1));
}
console.log(sortArr(data, order));

＆＃13;

Answer 3

您可以先将订单数组减少到一个对象，其中键是元素，值是数组中的索引。然后使用sort来按数组中的元素排序，然后按照它们在数组中的位置对它们进行排序，最后按标题对其他元素进行排序。

＆＃13;

var data = [{"id":"9","title":"B"},{"id":"63","title":"Z"},{"id":"433","title":"D"},{"id":"50","title":"A"},{"id":"2","title":"G"}]

var order = [3,9,50,7].reduce(function(r, e, i) {
 return r[e] = i, r
}, {})

var result = data.sort(function(a, b) {
 return ((order[b.id] != undefined) - (order[a.id] != undefined) || (order[a.id] - order[b.id])) ||
  	a.title.localeCompare(b.title)
})

console.log(result)

＆＃13;

Answer 4

试试这个：

var order = [3,9,50,7];
var data = [
    {
        "id": "9",
        "title": "B"
    },
    {
        "id": "63",
        "title": "Z"
    },
    {
        "id": "433",
        "title": "D"
    },
    {
        "id": "50",
        "title": "A"
    },
    {
        "id": "2",
        "title": "G"
    }
]
     let sortedArray =  data.sort((a, b) => {
          return ((order.indexOf(a.id) || Number.Max_VALUE) - (order.indexOf(b.id) || Number.MAX_VALUE) || a.title.localeCompare(b.title) )
        })
      console.log(sortedArray)

Answer 5

可以在一个排序功能中完成。使用Array.indexOf获取值以在order数组中对id进行排序。如果订单数组中只有一个项目，则总是向上移动。所有其他案例按字母顺序排序。

var order = [3,9,50,7];

var data = [
    {id: "9", title: "B"},
    {id: "63", title: "Z"},
    {id: "433", title: "D"},
    {id: "50", title: "A"},
    {id: "2",title: "G"},
    {id: "9",title: "F"},
    {id: "7",title: "D"},
    {id: "3",title: "E"},
    {id: "2",title: "F"},
]
// the sort function 
function sortFunc(a,b){
    var iA = order.indexOf(Number(a.id))+1; // get index of A
    var iB = order.indexOf(Number(b.id))+1; // get index of B
    if(iA && iB){  // if both in the order array
        return iA === iB ? // if the same in order array then sort alphabet
            a.title.localeCompare(b.title) :
            iA - iB;
    }
    // if A or B in order array move up else sort alphabet
    return iA ? -1 : iB ? 1 : a.title.localeCompare(b.title);
}
// sort data
data.sort(sortFunc);
// dispay result
data.forEach(obj=>console.log(obj.id + ":" + obj.title))

使用Javascript按另一个数组排序JSON，其余按字母顺序排序

5 个答案: