javascript - 推送多维数组

Question

我正在为我的多维数组而苦苦挣扎。我实际上已经做了几个小时的研究，但找不到任何有用的东西。

我有一个多维数组，如下所示:

var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4, 0],
  ['Coogee Beach', -33.923036, 151.259052, 1, 1],
  ['Cronulla Beach', -34.028249, 151.157507, 3, 2],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2, 0],
  ['Maroubra Beach', -33.950198, 151.259302, 5, 2]
];

现在我想通过推送向数组中添加一些东西:

---

locations.push( DATA HERE ); // 'Cronulla Beach 2', -34.028249, 151.157507, 8, 7

最后应该是这样的:

var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4, 0],
  ['Coogee Beach', -33.923036, 151.259052, 1, 1],
  ['Cronulla Beach', -34.028249, 151.157507, 3, 2],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2, 0],
  ['Maroubra Beach', -33.950198, 151.259302, 5, 2],
  ['Cronulla Beach 2', -34.028249, 151.157507, 8, 7]
];

---

注意:我需要一个数组，所以如果它是一个对象的解决方案，它对我没有帮助。

如果数组仍然为空，如 locations[];

，最好解决方案也应该有效

Answer 1

由于多维数组只是数组的数组，您可以通过将对象列表放在方括号中来创建一个新数组，您可以这样做:

 locations.push(['Cronulla Beach 2', -34.028249, 151.157507, 8, 7]); 

要访问或编辑现有位置，请使用其索引:

 var location = locations[0];
 console.log(location);
 locations[0][0] = "Bomba Beach"; // change name of first location
 locations[0][1] = -30.2; // change latitude of first location