在 JavaScript 中向现有数组添加新值 [英] Add new value to an existing array in JavaScript

问题描述

在 PHP 中，我会这样做:

In PHP, I'd do something like:

$array = array();
$array[] = "value1";
$array[] = "value2";
$array[] = "value3";

我将如何在 JavaScript 中做同样的事情?

How would I do the same thing in JavaScript?

推荐答案

您不需要 jQuery.使用常规 javascript

You don't need jQuery for that. Use regular javascript

var arr = new Array();
// or var arr = [];
arr.push('value1');
arr.push('value2');

注意:在 javascript 中，您也可以将对象用作数组，但仍然可以访问数组原型.这使得对象表现得像一个数组:

Note: In javascript, you can also use Objects as Arrays, but still have access to the Array prototypes. This makes the object behave like an array:

var obj = new Object();
Array.prototype.push.call(obj, 'value');

将创建一个如下所示的对象:

will create an object that looks like:

{
    0: 'value',
    length: 1
}

您可以像普通数组 f.ex obj[0] 一样访问 vaule.

You can access the vaules just like a normal array f.ex obj[0].

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