Question

嗨所以我得到了这个数组：

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

并且我想要附加它就像它是示例：

var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4],
  ['Coogee Beach', -33.923036, 151.259052, 5],
  ['Cronulla Beach', -34.028249, 151.157507, 3],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
  ['Maroubra Beach', -33.950198, 151.259302, 1],
  ['New item', -22.950198, 141.259302, 6]
];

我不知道该怎么做，搜索“将项目添加到数组中的数组”似乎没有用。

Answer 1

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

var newLocation = ['New item', -22.950198, 141.259302, 6];

locations.push(newLocation);

Answer 2

locations.push（['New item'， - 22.950198,141.259302,6]）; 是正确的答案。

Answer 3

如果你想在最后添加，你可以使用push（）方法！或者你可以使用.unshift方法添加第一个！在这里查看更多信息https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array

Answer 4

尝试使用它：

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

];

现在您可以应用推送

locations.push({'New item', -22.950198, 141.259302, 6});

让我知道它是否有效。

Answer 5

或者您可以使用spread syntax

var locations = [
  ['Bondi Beach', -33.890542, 151.274856, 4],
  ['Coogee Beach', -33.923036, 151.259052, 5],
  ['Cronulla Beach', -34.028249, 151.157507, 3],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
  ['Maroubra Beach', -33.950198, 151.259302, 1] 
];

locations = [...locations,['New item', -22.950198, 141.259302, 6]];

console.log(locations);

附加Javascript数组集合

5 个答案: