代码

Title

.item .header{

height: 35px;

background-color: #2459a2;

color: white;

line-height: 35px;

}

.hide{

display: none;

}

function ChangeMenu(nid) {

var current_header= document.getElementById(nid)

var item_list = current_header.parentElement.parentElement.children;

for(var i=0;i

var current_itme = item_list[i];

current_itme.children[1].classList.add('hide');

}

current_header.nextElementSibling.classList.remove('hide')

}

展示

标签：菜单,parentElement,current,header,HTML,内容,左侧,var

来源： https://blog.51cto.com/12965094/2371375