Question

大家好，我现在正在制作这样的阵列：

var piece1 = new DialoguePiece(null, questions[0], 0, 0, 4, 1);
var piece2 = new DialoguePiece(null, questions[1], 1, 0, 2, 3);
var piece3 = new DialoguePiece(scripts[1], null, 2, 1, 2, 2);
var piece4 = new DialoguePiece(scripts[2], null, 3, 1, 3, 3);
var piece5 = new DialoguePiece(scripts[0], null, 4, 0, 5, null);
var piece6 = new DialoguePiece(scripts[3], questions[2], 5, 4, 6, null);
var piece7 = new DialoguePiece(scripts[4], null, 6, 5, 7, null);
var piece8 = new DialoguePiece(scripts[5], null, 7, 6, null, null);

var pieces = [piece1, 
              piece2,
              piece3,
              piece4,
              piece5,
              piece6,
              piece7,
              piece8];

但我想知道有更简单的方法吗？例如：

var pieces = GetObjectsByName(DialoguePiece);

感谢。

Answer 1

function DialoguePiece(){
  DialoguePiece.all.push(this);
  ...
} 
DialoguePiece.all=[];

每次调用构造函数时，您都可以将它们存储在数组中（作为构造函数本身的属性，可以很容易地引用它）。要访问您可以执行以下操作：

for(var i=0;i++<10;)
  new DialoguePiece();

console.log(DialoguePiece.all);
//its a normal array, so you could also do:
console.log(DialoguePiece.all.map(dia=>dia.name||"doesnt exist"));

如何自动从对象中制作数组

1 个答案: