[英]how to remove all class from child node using pure javascript?
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演示示例:
<ul class="submenu_1 menushow">
<li class="sub">
<ul class="submenu_2 menushow">
<li>
<ul class="submenu_2 menushow">
<li>
<ul class="submenu_2 menushow">
<li></li>
</ul>
</li>
</ul>
</li>
<li></li>
</ul>
</li></ul>
要删除所有类.menushow
从元素从ul.submenu_1.menushow
你可以使用el.classList.remove('menushow')
document .querySelectorAll('ul.submenu_1.menushow, ul.submenu_1 .menushow') .forEach(function(el) { el.classList.remove('menushow'); })
<ul class="submenu_1 menushow"> <li class="sub"> <ul class="submenu_2 menushow"> <li> <ul class="submenu_2 menushow"> <li> <ul class="submenu_2 menushow"> <li></li> </ul> </li> </ul> </li> <li></li> </ul> </li> </ul>
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