Question

我想创建一个带有多个“架子”的“库”，但我无法弄清楚如何使用for循环创建它们时以不同方式命名每个架子：

function library(initLibraryName, initNumberOfShelves, initNumberOfBooks)
{
    this.name = initLibraryName;
    this.numberOfShelves = initNumberOfShelves;
    this.numberOfBooks = initNumberOfBooks;
    for (var i = 0; i < numberOfShelves; i++)
    {
       this.shelf = new shelf(i, numberOfBooks/numberOfShelves);
    }
}

Answer 1

我不确定为什么要创建新的货架实例，但首先应该声明它

// by convention constructor name should start with uppercase letter
function Library(initLibraryName, initNumberOfShelves, initNumberOfBooks) {
    this.name = initLibraryName;
    this.numberOfShelves = initNumberOfShelves;
    this.numberOfBooks = initNumberOfBooks;
    this.shelf = []; // at first you need to define an array
    for (var i = 0; i < numberOfShelves; i++) {
        // then push Shelf instances to an array
        this.shelf.push(new Shelf(i, this.numberOfBooks / this.numberOfShelves)); 
    }
}

function Shelf(arg1, arg2) {
    this.prop1 = arg1;
    this.prop2 = arg2;
    this.method = function () {
        // some logic
    }
}

Answer 2

感谢：https://stackoverflow.com/users/3052866/user3052866

我现在意识到我需要在我的库类中有一个架子数组，并且你不能只在JS中创建多个对象作为函数的一部分！

感谢elclanrs指出后者！

使用不同的名称在循环中创建多个对象

2 个答案: