声明对象数组 [英] Declaring array of objects

问题描述

我有一个变量，它是一个数组，我希望数组的每个元素默认都充当一个对象.为了实现这一点，我可以在我的代码中做这样的事情.

I have a variable which is an array and I want every element of the array to act as an object by default. To achieve this, I can do something like this in my code.

var sample = new Array();
sample[0] = new Object();
sample[1] = new Object();

这很好用，但我不想提及任何索引号.我希望我的数组的所有元素都是一个对象.我如何声明或初始化它?

This works fine, but I don't want to mention any index number. I want all elements of my array to be an object. How do I declare or initialize it?

var sample = new Array();
sample[] = new Object();

我尝试了上面的代码，但它不起作用.如何在不使用索引号的情况下初始化对象数组?

I tried the above code but it doesn't work. How do I initialize an array of objects without using an index number?

推荐答案

使用 array.push() 将一项添加到数组的末尾.

Use array.push() to add an item to the end of the array.

var sample = new Array();
sample.push(new Object());

要做到这一点 n 次，请使用 for 循环.

To do this n times use a for loop.

var n = 100;
var sample = new Array();
for (var i = 0; i < n; i++)
    sample.push(new Object());

<小时>

请注意，您还可以将 new Array() 替换为 [] 并将 new Object() 替换为 {}所以它变成:

---

Note that you can also substitute new Array() with [] and new Object() with {} so it becomes:

var n = 100;
var sample = [];
for (var i = 0; i < n; i++)
    sample.push({});

这篇关于声明对象数组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！