jQuery 如何使用jQuery将id属性添加到具有特定类的html标签？
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How to add an id attribute to a html tag with a certain class using jQuery?
提问by Boris
I have a link with a class of specialand I want to add an id attribute to it.
我有一个类的链接，special我想向它添加一个 id 属性。
Only one element in my document will have this class at any one time (I may remove and add a new one at some point).
在任何时候，我的文档中只有一个元素会有这个类（我可能会在某个时候删除并添加一个新元素）。
How would I add an id attribute to the element to change it from this:
我将如何向元素添加 id 属性以将其更改为：
<div class="special">
to this:
对此：
<div id="special-12345" class="special">
回答by prodigitalson
Adding the attribute is easy:
添加属性很简单：
$('.special').attr('id', 'your-id-value');
The more potentially problematic part will be ensuring that the id's you are adding are unique.
更有潜在问题的部分是确保您添加的 ID 是唯一的。
回答by rajangupta
Try this
尝试这个
$('div.special').attr('id','your-id');
回答by Steven
$(".special").attr("id","special-" + (new Date()).getTime());
回答by librewolf
Don't have the reputation to add a comment, but i believe it's benefitial enough for others searching for answer to state, that
没有添加评论的声誉，但我相信这对于其他人寻找答案的状态来说已经足够有益了，那就是
attr();
Doesn't simply addthe attribute but rather setsit. Important when there already is some set ID on the element.
不是简单地添加属性而是设置它。当元素上已经有一些设置 ID 时很重要。
回答by Andrea_dev
You can add id with:
您可以添加 id：
$('.special').attr('id', 'id-value');
Do you want change id?
你要换身吗？
$('.special').removeAttr('id').attr('id', 'id-value');
