访问使用jQuery或纯的Javascript HTML输入文本框的数组 [英] Accessing an array of HTML input text boxes using jQuery or plain Javascript

问题描述

我在找创建一个包含输入文本框，一个动态的数字形式。我想每一个文本框，形成一个阵列的一部分（这在理论上使我更容易循环通过他们，特别是我不知道最终会存在的文本字段数）。该HTML code想是这样的：

I'm looking to create a form which contains a dynamic number of input text boxes. I would like each text box to form part of an array (this would in theory make it easier for me to loop through them, especially as I won't know the number of text fields that will eventually exist). The HTML code would like something like:

<p>Field 1: <input type="text" name="field[1]" id="field[1]"></p>
<p>Field 2: <input type="text" name="field[2]" id="field[2]"></p>
<p>Field 3: <input type="text" name="field[3]" id="field[3]"></p>
<p>Field 4: <input type="text" name="field[4]" id="field[4]"></p>
<p>Field 5: <input type="text" name="field[5]" id="field[5]"></p>

此数据随后将被发送到一个PHP脚本，并会被重新presented作为数组 - 或者至少，这是理论

This data would then be sent to a PHP script and would be represented as an array - or at least, that's the theory.

所以我的第一个问题是，这是可以实现使用HTML？被设计形式上班呀？

So my first question is, is this achievable using HTML? Are forms designed to work that way?

如果这个问题的答案是是，我将如何然后去有关访问每个使用jQuery或没有这些的，老式的JavaScript？

If the answer to that is "yes", how would I then go about accessing each of those using jQuery or failing that, plain old JavaScript?

我已经尝试实现这一目标使用以下的jQuery code：

I've attempted to achieve this using the following jQuery code:

someval = $('#field[1]').val();

和

someval = $('#field')[1].val();

和下面的JavaScript：

and the following JavaScript:

someval = document.getElementById('related_link_url')[1].value;

不过，我已经没有任何运气。

But I've not had any luck.

先谢谢了。

编辑：

我要指出，但从一个Javascript一点，我已经受够了工作，其中每个元素的ID是一样的东西field_1，field_2等。不过，我觉得，如果我可以通过将每个文本框为实现这一目标一个数组，它会做出整洁，更易于管理code。

I should note that from a Javascript point of view, I've had it working where the ID of each element is something like field_1, field_2 etc. However, I feel that if I can achieve it by placing each text box into an array, it would make for tidier and easier to manage code.

推荐答案

首先， ID 属性不能包含 [或] 字符。

First of all, id attribute cannot contains [ or ] character.

有是很多的方式来获得的jQuery /这些元素普通的JavaScript引用。您可以使用后代选择：

There is lots of ways to get jQuery/plain JavaScript references to these elements. You can use descendant selector:

<fieldset id="list-of-fields">
   <!-- your inputs here -->
</fieldset>

$("#list-of-fields input");
document.getElementById("list....").getElementsByTagName("input");

您也可以使用属性选择：

You can also use attribute selector:

$("input[name^=field]");

我不知道这是否是唯一的办法，但我认为，在普通的JavaScript你必须获取所有输入元素（文件。的getElementsByTagName ），然后遍历这些元素的数组，并检查每个元素（是否有其价值与启动名称属性字段）。

I'm not sure whether that's the only way but I think in plain JavaScript you'll have to fetch all input elements (document.getElementsByTagName) and then loop through array of these elements and check each element (whether it has name attribute which value starts with field).

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