jquery - 如何在 slideToggle 上添加/删除类？
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jquery - how to add/remove class on slideToggle?
提问by MEM
I would like to each time the div expands, to add the class 'selecionado' once the expansion is finished. When the contraction is done (the slideUp part) I would like to remove this class.
我想每次 div 扩展时，在扩展完成后添加类“selecionado”。当收缩完成（slideUp 部分）我想删除这个类。
Can I have a help here please?
我可以在这里帮忙吗？
$('#btCategoriaA').click(function()
{
$('#listaCategoriaA').slideToggle('slow', function() {
$('#btCategoriaA').addClass('selecionado');
});
});
Thanks in advance, MEM
提前致谢，MEM
回答by Nick Craver
You can toggle the class using .toggleClass()based on if the element .is():visibleafter the animation, like this:
您可以.toggleClass()根据动画后的元素使用if切换类，如下所示：.is():visible
$('#btCategoriaA').click(function() {
$('#listaCategoriaA').slideToggle('slow', function() {
$('#btCategoriaA').toggleClass('selecionado', $(this).is(':visible'));
});
});
