Question

我正在尝试使用JavaScript中的.sort()方法对下面显示的数组进行排序。

var addresses = [
    "5 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan",     
    "51 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "53 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "55 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "57 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "7 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "9 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan"
];

但是，在调用.sort方法之后，我将数组写入文档。该数组似乎不会更改为升序数字顺序。

谁能看到我出错的地方？

Answer 1

您的数组包含字符串，因此它们将按字母顺序排序，而不是按数字顺序排序。您将要使用排序函数作为array.sort的参数并解析出门牌号。

Answer 2

最后通过以下代码使用它：

function naturalCompare(a, b) {
    var ax = [], bx = [];

    a.replace(/(\d+)|(\D+)/g, function(_, $1, $2) { ax.push([$1 || Infinity, $2 || ""]) });
    b.replace(/(\d+)|(\D+)/g, function(_, $1, $2) { bx.push([$1 || Infinity, $2 || ""]) });

    while(ax.length && bx.length) {
        var an = ax.shift();
        var bn = bx.shift();
        var nn = (an[0] - bn[0]) || an[1].localeCompare(bn[1]);
        if(nn) return nn;
    }

    return ax.length - bx.length;
}

addresses = addresses.sort(naturalCompare);

Answer 3

您可以使用此排序函数来比较字符串的第一个数字

var addresses = [
    "5 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan",     
    "51 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "53 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "55 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "57 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "7 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "9 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan"
];


addresses.sort(function(a, b){
  return +a.split(" ")[0] - +b.split(" ")[0];
});

console.log(addresses);

Answer 4

检查以下示例

var points = [40, 100, 1, 5, 25, 10];
points.sort(function(a, b){return a-b});

http://www.w3schools.com/jsref/jsref_sort.asp

Answer 5

试试这个

var addresses = [
    "5 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan",     
    "51 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "53 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "55 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "57 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "7 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan", 
    "9 Glyn Eiddew, , , , Llanbradach, Caerphilly, Mid Glamorgan"
];

addresses.sort(function(a, b){
    return a.split(' ')[0] - b.split(' ')[0]
})

无法在Javascript中将数组排序为升序数字顺序

5 个答案: