jQuery $.active is a function which jQuery uses internally but not mentioned in the official documentation. But there is no problem in using ... ... <看更多>

fadeToggle(). 使元素自動切換淡入與淡出效果，參數可放入秒數，ex. 1000 毫秒。 Class 常常搭配active. ... <看更多>

jQuery Click Hide & Show Panels with active class and using siblings. Using toggleClass to initiate css3 animations. - click_hide_show.js. ... <看更多>

Add Remove Active Class Based On URL Using Javascript | No jQuery. 42,881 views42K views. Feb 18 ... ... <看更多>

This is ok since it's valid CSS anyways. However... The problem with both approaches ( .btn-accordion.is-active and .accordion-menu ... ... <看更多>