从 jQuery 对象获取哈希字符串/guid

发布于 2024-10-26 07:20:54 字数 628 浏览 3 评论 0原文

我想要一个 jQuery 对象的哈希表，并且需要它们的某种唯一标识符。

DOM 表示只是

<tr>
    ...
</tr>

我想将 jQuery 对象添加到哈希表

hash[$(trObject).guid()] = $(trObject);

如何在不扩展 jQuery 的情况下唯一标识特定的 jQuery 对象？

我知道我可以编写一个方法

(function() {
    var guid = 0;
    $.fn.guid = function() {
         var node = this[0];
         if (node.guid === undefined) {
              node.guid = guid++;
         }
         return node.guid;
    };
}());

来为我做到这一点，但我更想知道是否有某种本机标准方法可以从 jQuery 对象获取字符串/整数哈希码。

PS 我不希望达到 32 位整数限制。

原文

I would like to have a hashtable of jQuery objects and needs some kind of unique identifier for them.

The DOM representation is just

<tr>
    ...
</tr>

And I would like to add my jQuery <tr> objects to a hashtable

hash[$(trObject).guid()] = $(trObject);

How can I uniquely identify a particular jQuery object without extending jQuery?

I know I could write a method

(function() {
    var guid = 0;
    $.fn.guid = function() {
         var node = this[0];
         if (node.guid === undefined) {
              node.guid = guid++;
         }
         return node.guid;
    };
}());

To do this for me, but I would prefer to know if there is some kind of native standard way to get a string/int hashcode from a jQuery object.

P.S. I don't expect to hit the 32bit integer limit.

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