Question

我之前问过以下问题：Can JavaScript or jQuery sort a JSON array on multiple criteria?

我想我可能在提出问题时犯了一个错误，因为我指定了一个JavaScript数组，而不是一个对象，而且看起来这种差异是我遇到的困难的根源。

我的页面上存在由JSON定义的以下对象，该对象用于自动完成功能：

var fundList = [
    { "name": "Pension Managed Fund 1", "id": 21, "cid": "N0", "dupId": 53 },
    { "name": "Managed Property Fund 2", "id": 407, "cid": "N0", "dupId": 58 },
    { "name": "Retirement Managed Fund 3", "id": 640, "cid": "N0", "dupId": 111 },
    { "name": "Retirement Managed Fund 4", "id": 752, "cid": "N0", "dupId": 115 }
]

我需要根据名称按字母顺序对这些项目进行排序，但它们也必须按照与输入到文本框中的值的相关性进行排序（这会触发自动完成）

例如，如果用户在文本框中键入“Managed”，则上面的列表将按如下方式排序：

Managed Property Fund 2

Pension Managed Fund 1

Retirement Managed Fund 3

Retirement Managed Fund 4

如果他们输入“退休”，则会对列表进行排序：

Retirement Managed Fund 3

Retirement Managed Fund 4

Managed Property Fund 2

Pension Managed Fund 1

如果输入“基金”，则订单将是正常的字母顺序：

Managed Property Fund 2

Pension Managed Fund 1

Retirement Managed Fund 3

Retirement Managed Fund 4

如果能够根据我指定的名称和标准对此进行排序，我需要做什么？我尝试使用上一个问题中建议的fundList.sort(new function(a, b)，但是返回一个函数未定义的错误。

Answer 1

您应该认真阅读javascript中的how to sort arrays。

这是一种方法：

var fundList = [
        { "name": "Pension Managed Fund 1", "id": 21, "cid": "N0", "dupId": 53 },
        { "name": "Managed Property Fund 2", "id": 407, "cid": "N0", "dupId": 58 },
        { "name": "Retirement Managed Fund 3", "id": 640, "cid": "N0", "dupId": 111 },
        { "name": "Retirement Managed Fund 4", "id": 752, "cid": "N0", "dupId": 115 }
    ],
    textEntered = 'Managed';

fundList.sort(function(a, b)
{
    var aStart = a.name.match(new RegExp('^'+textEntered, 'i')) || [],
        bStart = b.name.match(new RegExp('^'+textEntered, 'i')) || [];

    if ( aStart.length != bStart.length ) return bStart.length - aStart.length;

    else return a.name > b.name ? 1 : -1;
});

http://jsfiddle.net/txJVB/3/

Answer 2

var fundList = [
        { "name": "Pension Managed Fund 1", "id": 21, "cid": "N0", "dupId": 53 },
        { "name": "Managed Property Fund 2", "id": 407, "cid": "N0", "dupId": 58 },
        { "name": "Retirement Managed Fund 3", "id": 640, "cid": "N0", "dupId": 111 },
        { "name": "Retirement Managed Fund 4", "id": 752, "cid": "N0", "dupId": 115 }
    ],
    textEntered = 'Managed';

fundList.sort(function(a, b)
{
    ai = a.name.indexOf(textEntered);
    bi = b.name.indexOf(textEntered);
    if(ai>=0 && bi<0) return -1;
    else if(bi>=0 && ai<0) return 1;
    else return a.name - b.name;
});

如何根据名称对此JavaScript对象进行排序，然后按相关性排序？

2 个答案: