数组内数组的最高值

Question

我有一个包含这些值的数组（从google.maps.LatLng返回）：

var polygon = [
 { k=50.882917044569744, B=6.003985404968262}, 
 { k=50.88289589175401, B=6.003938466310501}, 
 { k=50.882934389871465, B=6.003895550966263}, 
 { k=50.88295554266969, B=6.003943160176277}
]

我想要具有最高B值的那个的键，所以在这种情况下它将是polygon[0]我不知道该数组究竟是如何制作的，但是console.log()会让我回归确切地说：

[df { k=50.882917044569744, B=6.003985404968262, toString=function(), meer...}, df { k=50.88289589175401, B=6.003938466310501, toString=function(), meer...}, df { k=50.882934389871465, B=6.003895550966263, toString=function(), meer...}, df { k=50.88295554266969, B=6.003943160176277, toString=function(), meer...}]

polygon[0]会给我第一个对象。

Answer 1

您始终可以使用以下内容迭代数组：

var polygon = [
    {k: 50.882917044569744, B: 6.003985404968262},
    {k: 50.88289589175401,  B: 6.003938466310501}, 
    {k: 50.882934389871465, B: 6.003895550966263},
    {k: 50.88295554266969,  B: 6.003943160176277}
];
var i, p;
for (i = 0; i < polygon.length; i++) {
    if (p === undefined || p.k < polygon[i].k) {
        p = polygon[i];
    }
}
console.log(p);