jQuery 如何通过jquery更改元素的类名

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时间:2020-08-26 16:25:10  来源:igfitidea点击:

how to change class name of an element by jquery

jquery

提问by Nishant Kumar

<div class="bestAnswerControl">
    <div id="ct100_contentplaceholder_lvanswer_control_divbestanswer"  
         class="IsBestAnswer"></div>
</div>

I want to add:

我想补充:

.bestanswer
{
    // some attribute
}

I want to replace class="IsBestAnswer"of div to class="bestanswer"by jquery. How do I do this?

我想用 jquery替换class="IsBestAnswer"div class="bestanswer"。我该怎么做呢?

I am using this approach:

我正在使用这种方法:

$('.IsBestAnswer').addclass('bestanswer'); 

but it's not working.

但它不起作用。

回答by Nikita Rybak

$('.IsBestAnswer').addClass('bestanswer').removeClass('IsBestAnswer');

Case in method names is important, so no addclass.

方法名称中的大小写很重要,所以没有addclass.

jQuery addClass()
jQuery removeClass()

jQuery addClass()
jQueryremoveClass()

回答by Tim

Instead of removeClass and addClass, you can also do it like this:

除了 removeClass 和 addClass,您还可以这样做:

$('.IsBestAnswer').toggleClass('IsBestAnswer bestanswer');

回答by jensgram

$('.IsBestAnswer').removeClass('IsBestAnswer').addClass('bestanswer');

Your code has two problems:

您的代码有两个问题:

  1. The selector .IsBestAnswedoes not match what you thought
  2. It's addClass(), not addclass().
  1. 选择器.IsBestAnswe与您的想法不符
  2. addClass(),不是addclass()

Also, I'm not sure whether you want to replacethe class or addit. The above will replace, but remove the .removeClass('IsBestAnswer')part to add only:

另外,我不确定您是要替换该类还是添加它。以上将替换,但.removeClass('IsBestAnswer')仅删除要添加的部分:

$('.IsBestAnswer').addClass('bestanswer');

You should decide whether to use camelCase or all-lowercase in your CSS classes too (e.g. bestAnswervs. bestanswer).

你也应该决定在你的 CSS 类中是使用驼峰式还是全小写(例如bestAnswervs. bestanswer)。