JavaScript：如何引用数组内部对象内的数组并向其推送内容？

Question

我有以下数组：

var ships = [ { locations: [], hits:0 },
              { different: [], different1:0 },
              { different3: [], different2:0 } ];

如何引用阵列＆＃34;位置＆＃34;在第一个物体内并推动它的东西？谢谢！

Answer 1

您可以使用索引访问或解构分配

索引访问

var ships = [ { locations: [], hits:0 },
              { different: [], different1:0 },
              { different3: [], different2:0 } ];
              
ships[0].locations.push("Ele from SO");

console.log(ships)

解构分配

var ships = [ { locations: [], hits:0 },
              { different: [], different1:0 },
              { different3: [], different2:0 } ];
              
var [obj] = ships;
obj.locations.push("Ele from SO");

console.log(ships)

Answer 2

应该是

ships[0].locations.push(newItem);